litellm - ✅(Solved) Fix [Bug]: azure_ai/mistral-large-3 does not support max_completion_tokens [1 pull requests, 1 comments, 2 participants]
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BerriAI/litellm#26322•Fetched 2026-04-24 05:52:31
Comments
1
Participants
2
Timeline
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jeanibarzError Message
{ "error": { "message": "litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3\nAvailable Model Group Fallbacks=None", "type": null, "param": null, "code": "500" } }
Fix Action
Fixed
- Fixed by PR: fix(azure_ai): map max_completion_tokens to max_tokens for Model Inference endpoint (https://github.com/BerriAI/litellm/pull/26344)
PR fix notes
PR #26344: fix(azure_ai): map max_completion_tokens to max_tokens for Model Inference endpoint
- Repository: BerriAI/litellm
- Author: jeanibarz
- State: open | merged: False
- Link: https://github.com/BerriAI/litellm/pull/26344
Description (problem / solution / changelog)
Relevant issues
Fixes #26322
Pre-Submission checklist
Please complete all items before asking a LiteLLM maintainer to review your PR
- I have Added testing in the
tests/test_litellm/directory, Adding at least 1 test is a hard requirement - see details - My PR passes all unit tests on
make test-unit - My PR's scope is as isolated as possible, it only solves 1 specific problem
- I have requested a Greptile review by commenting
@greptileaiand received a Confidence Score of at least 4/5 before requesting a maintainer review
CI (LiteLLM team)
-
Branch creation CI run Link:
-
CI run for the last commit Link:
-
Merge / cherry-pick CI run Links:
Screenshots / Proof of Fix
Backend parameter-mapping fix — no UI surface. Proof is in the unit tests and the before/after trace below.
Before (upstream main at e9e86ed956):
>>> from litellm.llms.azure_ai.chat.transformation import AzureAIStudioConfig
>>> AzureAIStudioConfig().map_openai_params(
... {"max_completion_tokens": 1000}, {}, "mistral-large-3", drop_params=False
... )
{'max_completion_tokens': 1000} # Azure AI Foundry rejects this with 422After this PR:
>>> AzureAIStudioConfig().map_openai_params(
... {"max_completion_tokens": 1000}, {}, "mistral-large-3", drop_params=False
... )
{'max_tokens': 1000} # accepted by /models/chat/completionsTargeted unit tests (9 in total for this override, 5 general + 4 parametrized for OpenAI-family models) all pass:
tests/test_litellm/llms/azure_ai/chat/test_azure_ai_transformation.py
test_azure_ai_map_openai_params_renames_max_completion_tokens PASSED
test_azure_ai_map_openai_params_preserves_max_tokens PASSED
test_azure_ai_map_openai_params_max_completion_tokens_takes_priority PASSED
test_azure_ai_map_openai_params_does_not_mutate_caller_dict PASSED
test_azure_ai_map_openai_params_handles_openai_family_models[o3-mini-...] PASSED (x4)
test_azure_model_router_inherits_max_completion_tokens_rewrite PASSEDBroader tests/test_litellm/llms/azure_ai/ suite: 105/105 passing locally. Ruff + MyPy + Black all clean on the touched files.
Type
Bug Fix
Changes
Root cause. AzureAIStudioConfig in litellm/llms/azure_ai/chat/transformation.py inherits map_openai_params from OpenAIConfig unchanged. The parent dispatches by model name — the default path copies max_completion_tokens through as-is, and the o-series and gpt-5 sub-configs actively rename max_tokens -> max_completion_tokens. Either way, the value headed for Azure AI Foundry's Model Inference endpoint (/models/chat/completions) ends up as max_completion_tokens, which that endpoint's request schema does not accept (see Microsoft Learn - the schema lists only max_tokens). The endpoint responds with 422 Unprocessable Entity, which is what the issue reporter hit on azure_ai/mistral-large-3.
Fix. Override map_openai_params in AzureAIStudioConfig and normalize AFTER the parent mapping: delegate to super().map_openai_params(...) first, then rename max_completion_tokens -> max_tokens on the resulting dict. Normalizing at the end (rather than before the super() call) keeps the fix robust for every parent dispatch path — Mistral/Llama-family (default copy), o-series (o3-mini, o1-*, ...), and gpt-5-* — all end up with max_tokens on the wire.
Precedence. If a caller passes both max_tokens and max_completion_tokens, max_completion_tokens wins. This matches the existing priority in MistralConfig.map_openai_params (litellm/llms/mistral/chat/transformation.py:154-167).
Scope note. The override lives on AzureAIStudioConfig, so it transparently also covers AzureModelRouterConfig, which subclasses it and targets the same Model Inference endpoint. Azure OpenAI Service (azure/...) is unaffected — _get_openai_compatible_provider_info reroutes known OpenAI-catalog models to the azure provider, which uses AzureConfig with its own separate parameter handling.
Files changed:
litellm/llms/azure_ai/chat/transformation.py— newmap_openai_paramsoverride (+25 lines)tests/test_litellm/llms/azure_ai/chat/test_azure_ai_transformation.py— 6 new mocked unit tests, one parametrized across 4 model names (+115 lines)
Changed files
litellm/llms/azure_ai/chat/transformation.py(modified, +25/-0)tests/test_litellm/llms/azure_ai/chat/test_azure_ai_transformation.py(modified, +115/-0)
Code Example
{
"error": {
"message": "litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3\nAvailable Model Group Fallbacks=None",
"type": null,
"param": null,
"code": "500"
}
}
---
curl --location 'http://localhost:4000/v1/chat/completions' --header 'Content-Type: application/json' --header 'Authorization: Bearer sk-1234' --data '{
"model": "mistral-large-3",
"messages": [
{
"role": "system",
"content": [
{
"type": "text",
"text": "Faux contexte"
}
]
},
{
"role": "user",
"content": [
{
"type": "text",
"text": "bonjour"
}
]
}
],
"stream": true,
"stream_options": {
"include_usage": true
},
"max_completion_tokens": 1000,
"litellm_request_debug": true
}'
---
07:41:02 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://redacted.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview \
-H 'REDACTED' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-3', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'stream_options': {'include_usage': True}, 'max_completion_tokens': 1000}
---
08:36:16 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://api.mistral.ai/v1/chat/completions \
-H 'Authorization: Be****Df' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-2512', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'max_tokens': 1000}'
---
07:41:02 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://{REDACTED}.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview \
-H 'REDACTED' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-3', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'stream_options': {'include_usage': True}, 'max_completion_tokens': 1000}
[...]
07:41:02 - LiteLLM Router:INFO: router.py:2233 - litellm.acompletion(model=azure_ai/mistral-large-3) Exception litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209)
07:41:02 - LiteLLM Router:DEBUG: router.py:5332 - TracebackTraceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 176, in _make_common_async_call
response = await async_httpx_client.post(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/logging_utils.py", line 297, in async_wrapper
result = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 513, in post
raise e
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 469, in post
response.raise_for_status()
~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 829, in raise_for_status
raise HTTPStatusError(message, request=request, response=self)
httpx.HTTPStatusError: Client error '422 Unprocessable Entity' for url 'https://REDACTED.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 620, in acompletion
response = await init_response
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 694, in acompletion_stream_function
completion_stream, _response_headers = await self.make_async_call_stream_helper(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<15 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 753, in make_async_call_stream_helper
response = await self._make_common_async_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 195, in _make_common_async_call
provider_config.transform_request_on_unprocessable_entity_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
e=e, request_data=data
^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/azure_ai/chat/transformation.py", line 315, in transform_request_on_unprocessable_entity_error
data = drop_params_from_unprocessable_entity_error(e=e, data=request_data)
File "/usr/lib/python3.13/site-packages/litellm/llms/openai/common_utils.py", line 98, in drop_params_from_unprocessable_entity_error
error_json = e.response.json()
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 832, in json
return jsonlib.loads(self.content, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/json/__init__.py", line 352, in loads
return _default_decoder.decode(s)
~~~~~~~~~~~~~~~~~~~~~~~^^^
File "/usr/lib/python3.13/json/decoder.py", line 348, in decode
raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 209)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5604, in async_function_with_fallbacks
response = await self.async_function_with_retries(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5759, in async_function_with_retries
self.should_retry_this_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
error=e,
^^^^^^^^
...<4 lines>...
content_policy_fallbacks=content_policy_fallbacks,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5989, in should_retry_this_error
raise error
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5710, in async_function_with_retries
response = await self.make_call(original_function, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5878, in make_call
response = await response
^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2241, in _acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2187, in _acompletion
response = await _response
^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 2093, in wrapper_async
raise e
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 1892, in wrapper_async
result = await original_function(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 639, in acompletion
raise exception_type(
~~~~~~~~~~~~~~^
model=model,
^^^^^^^^^^^^
...<3 lines>...
extra_kwargs=kwargs,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2461, in exception_type
raise e # it's already mapped
^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 635, in exception_type
raise APIConnectionError(
...<7 lines>...
)
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209)
07:41:02 - LiteLLM Router:INFO: router.py:5416 - Trying to fallback b/w models
07:41:02 - LiteLLM Proxy:ERROR: common_request_processing.py:1570 - litellm.proxy.proxy_server._handle_llm_api_exception(): Exception occured - litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 176, in _make_common_async_call
response = await async_httpx_client.post(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/logging_utils.py", line 297, in async_wrapper
result = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 513, in post
raise e
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 469, in post
response.raise_for_status()
~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 829, in raise_for_status
raise HTTPStatusError(message, request=request, response=self)
httpx.HTTPStatusError: Client error '422 Unprocessable Entity' for url 'https://REDACTED.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 620, in acompletion
response = await init_response
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 694, in acompletion_stream_function
completion_stream, _response_headers = await self.make_async_call_stream_helper(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<15 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 753, in make_async_call_stream_helper
response = await self._make_common_async_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 195, in _make_common_async_call
provider_config.transform_request_on_unprocessable_entity_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
e=e, request_data=data
^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/azure_ai/chat/transformation.py", line 315, in transform_request_on_unprocessable_entity_error
data = drop_params_from_unprocessable_entity_error(e=e, data=request_data)
File "/usr/lib/python3.13/site-packages/litellm/llms/openai/common_utils.py", line 98, in drop_params_from_unprocessable_entity_error
error_json = e.response.json()
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 832, in json
return jsonlib.loads(self.content, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/json/__init__.py", line 352, in loads
return _default_decoder.decode(s)
~~~~~~~~~~~~~~~~~~~~~~~^^^
File "/usr/lib/python3.13/json/decoder.py", line 348, in decode
raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 209)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/proxy/proxy_server.py", line 7145, in chat_completion
result = await base_llm_response_processor.base_process_llm_request(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<16 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/proxy/common_request_processing.py", line 1065, in base_process_llm_request
responses = await llm_responses
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 1741, in acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 1717, in acompletion
response = await self.async_function_with_fallbacks(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5613, in async_function_with_fallbacks
return await self.async_function_with_fallbacks_common_utils(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<8 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5570, in async_function_with_fallbacks_common_utils
raise original_exception
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5604, in async_function_with_fallbacks
response = await self.async_function_with_retries(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5759, in async_function_with_retries
self.should_retry_this_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
error=e,
^^^^^^^^
...<4 lines>...
content_policy_fallbacks=content_policy_fallbacks,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5989, in should_retry_this_error
raise error
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5710, in async_function_with_retries
response = await self.make_call(original_function, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5878, in make_call
response = await response
^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2241, in _acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2187, in _acompletion
response = await _response
^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 2093, in wrapper_async
raise e
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 1892, in wrapper_async
result = await original_function(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 639, in acompletion
raise exception_type(
~~~~~~~~~~~~~~^
model=model,
^^^^^^^^^^^^
...<3 lines>...
extra_kwargs=kwargs,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2461, in exception_type
raise e # it's already mapped
^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 635, in exception_type
raise APIConnectionError(
...<7 lines>...
)
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:116 - Enters prisma db call, response_cost: 0.0, token: 88dc28d0f030c55ed4ab77ed8faf098196cb1c05df778539800c9f1243fe6b4b; user_id: default_user_id; team_id: None
07:41:02 - LiteLLM Proxy:DEBUG: spend_tracking_utils.py:116 - getting payload for SpendLogs, available keys in metadata: ['user_api_key_user_id', 'headers', 'requester_metadata', 'user_api_key_hash', 'user_api_key_alias', 'user_api_key_spend', 'user_api_key_max_budget', 'user_api_key_team_id', 'user_api_key_project_id', 'user_api_key_project_alias', 'user_api_key_org_id', 'user_api_key_org_alias', 'user_api_key_team_alias', 'user_api_key_end_user_id', 'user_api_key_user_email', 'user_api_key_request_route', 'user_api_key_budget_reset_at', 'user_api_key_auth_metadata', 'user_api_key', 'agent_id', 'user_api_end_user_max_budget', 'user_api_key_auth', 'litellm_api_version', 'global_max_parallel_requests', 'user_api_key_team_max_budget', 'user_api_key_team_spend', 'user_api_key_model_max_budget', 'user_api_key_end_user_model_max_budget', 'user_api_key_user_spend', 'user_api_key_user_max_budget', 'user_api_key_metadata', 'user_api_key_team_metadata', 'user_api_key_object_permission_id', 'user_api_key_team_object_permission_id', 'endpoint', 'litellm_parent_otel_span', 'requester_ip_address', 'user_agent', 'queue_time_seconds', 'model_group', 'model_group_alias', 'model_group_size', 'attempted_retries', 'max_retries', 'deployment', 'model_info', 'api_base', 'deployment_model_name', 'caching_groups', 'status', 'error_information']
07:41:02 - LiteLLM Proxy:DEBUG: spend_tracking_utils.py:480 - SpendTable: created payload - request_id: 42af16c0-9c64-4423-8de5-6cd6cc6e02f2, model: azure_ai/mistral-large-3, spend: 0
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:723 - Writing spend log to db - request_id: 42af16c0-9c64-4423-8de5-6cd6cc6e02f2, spend: 0.0
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:190 - Runs spend update on all tables
07:41:02 - LiteLLM Proxy:DEBUG: common_request_processing.py:1583 - An error occurred: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
Model: azure_ai/mistral-large-3
API Base: `https://REDACTED.services.ai.azure.com/`
Messages: `[{'role': 'system', 'content': [{'type': 'text', 'text': 'Faux contexte'}]}, {'role': 'user', 'conte`
model_group: `mistral-large-3`
deployment: `azure_ai/mistral-large-3`
Debug this by setting `--debug`, e.g. `litellm --model gpt-3.5-turbo --debug`
INFO: 172.19.0.1:60786 - "POST /v1/chat/completions HTTP/1.1" 500 Internal Server ErrorRAW_BUFFERClick to expand / collapse
Check for existing issues
- I have searched the existing issues and checked that my issue is not a duplicate.
What happened?
This issue is closely related to the issue #9583.
Description: Systematic error encountered when calling mistral-large-3 hosted on Microsoft Foundry with the parameter max_completion_tokens
{
"error": {
"message": "litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3\nAvailable Model Group Fallbacks=None",
"type": null,
"param": null,
"code": "500"
}
}This error is only encountered with this model. When switching to any other model the following requests works flawlessly:
curl --location 'http://localhost:4000/v1/chat/completions' --header 'Content-Type: application/json' --header 'Authorization: Bearer sk-1234' --data '{
"model": "mistral-large-3",
"messages": [
{
"role": "system",
"content": [
{
"type": "text",
"text": "Faux contexte"
}
]
},
{
"role": "user",
"content": [
{
"type": "text",
"text": "bonjour"
}
]
}
],
"stream": true,
"stream_options": {
"include_usage": true
},
"max_completion_tokens": 1000,
"litellm_request_debug": true
}'In the logs, litellm sends the following request to azure:
07:41:02 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://redacted.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview \
-H 'REDACTED' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-3', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'stream_options': {'include_usage': True}, 'max_completion_tokens': 1000}We can see that max_completion_tokens is forwarded to the model by litellm but:
- Azure API only supports
max_tokensdocumentation - Same for Mistral API: documentation
When switching to the same model but via mistral directly (mistral/mistral-large-2512) the following request is sent by litellm:
08:36:16 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://api.mistral.ai/v1/chat/completions \
-H 'Authorization: Be****Df' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-2512', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'max_tokens': 1000}'We can see that here, max_completion_tokens is correctly translated to max_tokens which isn't the case with the azure_ai provider.
Steps to Reproduce
- Have a mistral chat model deployed on Microsoft Foundry
- Paste the above request in a terminal (adapt it if necessary of course)
- Watch the logs of your LiteLLM instance
Relevant log output
07:41:02 - LiteLLM:WARNING: litellm_logging.py:1156 -
POST Request Sent from LiteLLM:
curl -X POST \
https://{REDACTED}.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview \
-H 'REDACTED' -H 'Content-Type: application/json' \
-d '{'model': 'mistral-large-3', 'messages': [{'role': 'system', 'content': 'Faux contexte'}, {'role': 'user', 'content': 'bonjour'}], 'stream': True, 'stream_options': {'include_usage': True}, 'max_completion_tokens': 1000}
[...]
07:41:02 - LiteLLM Router:INFO: router.py:2233 - litellm.acompletion(model=azure_ai/mistral-large-3) Exception litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209)
07:41:02 - LiteLLM Router:DEBUG: router.py:5332 - TracebackTraceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 176, in _make_common_async_call
response = await async_httpx_client.post(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/logging_utils.py", line 297, in async_wrapper
result = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 513, in post
raise e
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 469, in post
response.raise_for_status()
~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 829, in raise_for_status
raise HTTPStatusError(message, request=request, response=self)
httpx.HTTPStatusError: Client error '422 Unprocessable Entity' for url 'https://REDACTED.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 620, in acompletion
response = await init_response
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 694, in acompletion_stream_function
completion_stream, _response_headers = await self.make_async_call_stream_helper(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<15 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 753, in make_async_call_stream_helper
response = await self._make_common_async_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 195, in _make_common_async_call
provider_config.transform_request_on_unprocessable_entity_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
e=e, request_data=data
^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/azure_ai/chat/transformation.py", line 315, in transform_request_on_unprocessable_entity_error
data = drop_params_from_unprocessable_entity_error(e=e, data=request_data)
File "/usr/lib/python3.13/site-packages/litellm/llms/openai/common_utils.py", line 98, in drop_params_from_unprocessable_entity_error
error_json = e.response.json()
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 832, in json
return jsonlib.loads(self.content, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/json/__init__.py", line 352, in loads
return _default_decoder.decode(s)
~~~~~~~~~~~~~~~~~~~~~~~^^^
File "/usr/lib/python3.13/json/decoder.py", line 348, in decode
raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 209)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5604, in async_function_with_fallbacks
response = await self.async_function_with_retries(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5759, in async_function_with_retries
self.should_retry_this_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
error=e,
^^^^^^^^
...<4 lines>...
content_policy_fallbacks=content_policy_fallbacks,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5989, in should_retry_this_error
raise error
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5710, in async_function_with_retries
response = await self.make_call(original_function, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5878, in make_call
response = await response
^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2241, in _acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2187, in _acompletion
response = await _response
^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 2093, in wrapper_async
raise e
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 1892, in wrapper_async
result = await original_function(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 639, in acompletion
raise exception_type(
~~~~~~~~~~~~~~^
model=model,
^^^^^^^^^^^^
...<3 lines>...
extra_kwargs=kwargs,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2461, in exception_type
raise e # it's already mapped
^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 635, in exception_type
raise APIConnectionError(
...<7 lines>...
)
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209)
07:41:02 - LiteLLM Router:INFO: router.py:5416 - Trying to fallback b/w models
07:41:02 - LiteLLM Proxy:ERROR: common_request_processing.py:1570 - litellm.proxy.proxy_server._handle_llm_api_exception(): Exception occured - litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 176, in _make_common_async_call
response = await async_httpx_client.post(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/logging_utils.py", line 297, in async_wrapper
result = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 513, in post
raise e
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/http_handler.py", line 469, in post
response.raise_for_status()
~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 829, in raise_for_status
raise HTTPStatusError(message, request=request, response=self)
httpx.HTTPStatusError: Client error '422 Unprocessable Entity' for url 'https://REDACTED.services.ai.azure.com/models/chat/completions?api-version=2025-04-01-preview'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 620, in acompletion
response = await init_response
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 694, in acompletion_stream_function
completion_stream, _response_headers = await self.make_async_call_stream_helper(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<15 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 753, in make_async_call_stream_helper
response = await self._make_common_async_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<10 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/custom_httpx/llm_http_handler.py", line 195, in _make_common_async_call
provider_config.transform_request_on_unprocessable_entity_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
e=e, request_data=data
^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/llms/azure_ai/chat/transformation.py", line 315, in transform_request_on_unprocessable_entity_error
data = drop_params_from_unprocessable_entity_error(e=e, data=request_data)
File "/usr/lib/python3.13/site-packages/litellm/llms/openai/common_utils.py", line 98, in drop_params_from_unprocessable_entity_error
error_json = e.response.json()
File "/usr/lib/python3.13/site-packages/httpx/_models.py", line 832, in json
return jsonlib.loads(self.content, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/json/__init__.py", line 352, in loads
return _default_decoder.decode(s)
~~~~~~~~~~~~~~~~~~~~~~~^^^
File "/usr/lib/python3.13/json/decoder.py", line 348, in decode
raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 2 column 1 (char 209)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/litellm/proxy/proxy_server.py", line 7145, in chat_completion
result = await base_llm_response_processor.base_process_llm_request(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<16 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/proxy/common_request_processing.py", line 1065, in base_process_llm_request
responses = await llm_responses
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 1741, in acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 1717, in acompletion
response = await self.async_function_with_fallbacks(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5613, in async_function_with_fallbacks
return await self.async_function_with_fallbacks_common_utils(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<8 lines>...
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5570, in async_function_with_fallbacks_common_utils
raise original_exception
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5604, in async_function_with_fallbacks
response = await self.async_function_with_retries(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5759, in async_function_with_retries
self.should_retry_this_error(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
error=e,
^^^^^^^^
...<4 lines>...
content_policy_fallbacks=content_policy_fallbacks,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5989, in should_retry_this_error
raise error
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5710, in async_function_with_retries
response = await self.make_call(original_function, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 5878, in make_call
response = await response
^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2241, in _acompletion
raise e
File "/usr/lib/python3.13/site-packages/litellm/router.py", line 2187, in _acompletion
response = await _response
^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 2093, in wrapper_async
raise e
File "/usr/lib/python3.13/site-packages/litellm/utils.py", line 1892, in wrapper_async
result = await original_function(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/main.py", line 639, in acompletion
raise exception_type(
~~~~~~~~~~~~~~^
model=model,
^^^^^^^^^^^^
...<3 lines>...
extra_kwargs=kwargs,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2461, in exception_type
raise e # it's already mapped
^^^^^^^
File "/usr/lib/python3.13/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 635, in exception_type
raise APIConnectionError(
...<7 lines>...
)
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:116 - Enters prisma db call, response_cost: 0.0, token: 88dc28d0f030c55ed4ab77ed8faf098196cb1c05df778539800c9f1243fe6b4b; user_id: default_user_id; team_id: None
07:41:02 - LiteLLM Proxy:DEBUG: spend_tracking_utils.py:116 - getting payload for SpendLogs, available keys in metadata: ['user_api_key_user_id', 'headers', 'requester_metadata', 'user_api_key_hash', 'user_api_key_alias', 'user_api_key_spend', 'user_api_key_max_budget', 'user_api_key_team_id', 'user_api_key_project_id', 'user_api_key_project_alias', 'user_api_key_org_id', 'user_api_key_org_alias', 'user_api_key_team_alias', 'user_api_key_end_user_id', 'user_api_key_user_email', 'user_api_key_request_route', 'user_api_key_budget_reset_at', 'user_api_key_auth_metadata', 'user_api_key', 'agent_id', 'user_api_end_user_max_budget', 'user_api_key_auth', 'litellm_api_version', 'global_max_parallel_requests', 'user_api_key_team_max_budget', 'user_api_key_team_spend', 'user_api_key_model_max_budget', 'user_api_key_end_user_model_max_budget', 'user_api_key_user_spend', 'user_api_key_user_max_budget', 'user_api_key_metadata', 'user_api_key_team_metadata', 'user_api_key_object_permission_id', 'user_api_key_team_object_permission_id', 'endpoint', 'litellm_parent_otel_span', 'requester_ip_address', 'user_agent', 'queue_time_seconds', 'model_group', 'model_group_alias', 'model_group_size', 'attempted_retries', 'max_retries', 'deployment', 'model_info', 'api_base', 'deployment_model_name', 'caching_groups', 'status', 'error_information']
07:41:02 - LiteLLM Proxy:DEBUG: spend_tracking_utils.py:480 - SpendTable: created payload - request_id: 42af16c0-9c64-4423-8de5-6cd6cc6e02f2, model: azure_ai/mistral-large-3, spend: 0
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:723 - Writing spend log to db - request_id: 42af16c0-9c64-4423-8de5-6cd6cc6e02f2, spend: 0.0
07:41:02 - LiteLLM Proxy:DEBUG: db_spend_update_writer.py:190 - Runs spend update on all tables
07:41:02 - LiteLLM Proxy:DEBUG: common_request_processing.py:1583 - An error occurred: litellm.APIConnectionError: APIConnectionError: Azure_aiException - Extra data: line 2 column 1 (char 209). Received Model Group=mistral-large-3
Available Model Group Fallbacks=None
Model: azure_ai/mistral-large-3
API Base: `https://REDACTED.services.ai.azure.com/`
Messages: `[{'role': 'system', 'content': [{'type': 'text', 'text': 'Faux contexte'}]}, {'role': 'user', 'conte`
model_group: `mistral-large-3`
deployment: `azure_ai/mistral-large-3`
Debug this by setting `--debug`, e.g. `litellm --model gpt-3.5-turbo --debug`
INFO: 172.19.0.1:60786 - "POST /v1/chat/completions HTTP/1.1" 500 Internal Server ErrorWhat part of LiteLLM is this about?
Proxy
What LiteLLM version are you on ?
v1.82.3, v1.81.0, v1.83.7
Twitter / LinkedIn details
No response
extent analysis
TL;DR
The issue can be resolved by modifying the azure_ai provider to correctly translate max_completion_tokens to max_tokens in the API request.
Guidance
- The error occurs because the
azure_aiprovider is not correctly translatingmax_completion_tokenstomax_tokensin the API request, resulting in a422 Unprocessable Entityerror. - To fix this, the
azure_aiprovider needs to be modified to correctly handle themax_completion_tokensparameter. - The
mistralAPI and Azure API both supportmax_tokens, so theazure_aiprovider should be updated to use this parameter instead ofmax_completion_tokens. - The issue can be verified by checking the API request sent by the
azure_aiprovider and ensuring that it includes the correctmax_tokensparameter.
Example
No code example is provided as the issue is related to the internal implementation of the azure_ai provider.
Notes
The issue is specific to the azure_ai provider and the mistral-large-3 model, and may not affect other providers or models.
Recommendation
Apply a workaround by modifying the azure_ai provider to correctly translate max_completion_tokens to max_tokens in the API request, as this is the most direct way to resolve the issue.
Vote matrix · Quick signals
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- CLI /yolo (in-chat) does not bypass dangerous command approvals — env var freeze + missing enable_session_yolo call
- OpenAI Codex provider crashes with "'NoneType' object is not iterable" (HTTP None)
- DEEPSEEK_API_KEY blocked by env blocklist in gateway process — cron jobs fail with deepseek provider
- fix(feishu): Card action callback routing issues - invalid message_id and unrecognized /card command
- Discord plugin: profiles without explicit `discord:` block silently get `require_mention=true` + `auto_thread=true` (regression in cc8e5ec2a)
- [Bug]: DISCORD_ALLOWED_ROLES ignored by gateway _is_user_authorized — role-authorized users get 'Unauthorized user' rejection
- [Bug]: /new, /clear, and /reset commands freeze the terminal session
- openai-codex subscription backend returns HTTP 200 with response.output=None, causing Slack/cron failures
- RFC: Centralized Model/Provider Registry
- bug: openai-codex provider — TypeError: 'NoneType' object is not iterable on every request (gpt-5.5)
- [Feature]: Source-aware instruction gate — architectural mitigation for indirect prompt injection
- Named custom provider stale_timeout_seconds ignored because runtime provider is normalized to `custom`
- guard test (ignore)
- [Feature]: per-platform LLM request_overrides (extra_body / reasoning_effort / service_tier)
- One-shot smoke: add Flue-backed orchestration fixture
- Gateway should not treat stale Codex app-server progress as final response after post-tool silence
- `docker_run_as_host_user: true` breaks bundled skills: Hermes home is mounted into `/root/.hermes` but the container runs as a non-root user (`HOME=/home/pn`)
- [Bug]: gateway api_server streaming bypasses server-side tool-call loop when chat_template_kwargs.enable_thinking=false (model emits tool name as plain text)
- [Feature]: Pre-install python-telegram-bot in Umbrel Hermes Docker image
- YouTube Shorts filter not working in youtube-content skill
- v0.15.0 PyPI release breaks ALL platforms — plugin.yaml manifests missing from package
- RFC: On-demand tool/skill/MCP discovery — decouple schema registration from process lifecycle
- Pixshelf: local-first stock photo workflow command center
- [Bug]: baoyu infographic skill should not silently bypass image_generate
- Pixshelf v1.5: manual submission tracking for stock agencies
- `hermes config set` silently accepts unknown keys, writing them where the runtime never reads
- Honcho memory prefetch hang on fresh CLI subprocess in v0.15.0 (regression from #27190)
- [Bug] v0.15.0 Docker image: stage2-hook.sh, main-wrapper.sh missing; container_boot module removed
- Feature: Reduce cache-read token overhead for DeepSeek providers — configurable cache_ttl, skills snapshot trimming, memory compaction
- Windows: three bugs from daily use (plugin discovery, gateway exit code, Unicode decode
- holographic memory: HRR silently degrades to FTS5 when numpy is missing
- Make max_tokens configurable for aux vision calls
- Conversation compression desynchronizes session ID between agent context and gateway routing, causing silent message loss
- [Bug]: v0.15.0 Docker image:The TUI cannot be used in the dashboard.
- cron: skip_memory=True blocks fact_store/memory tools from all cron jobs
- TUI: Node.js OOM crash when agent uses browser tools repeatedly
- feat: model_profiles — per-model toolset and memory config
- Automatic background skill patching disrupts active sessions (severe impact on local models)
- ensure_hermes_home() creates root-owned dirs in profile subdirectories when kanban workers are dispatched
- Feature: opt-in webhook bypass for DISCORD_ALLOW_BOTS — allow operator-initiated probes without weakening bot-loop guard
- v0.15.0: Codex requests fail HTTP 400 when participant display_name contains non-ASCII (emoji breaks input[].name pattern)
- Architecture: State Persistence Precedence (Memory vs Skills vs Hooks)
- [Bug]: cronjob tool: create action always fails with "schedule is required for create" even when parameters are provided
- codex-oauth: 'NoneType' object is not iterable in _run_codex_stream (gpt-5.5) — every turn fails non-retryably
- Docs/Config: Plugin local scope enablement ambiguity
- [Bug]: CLI freezes after using /new command (WSL)
- Profile Codex auth can ignore global credential pool when local state is stale
- [workflow-engine] CRITICAL: variable substitution crashes on regex metachars in user input
- [workflow-engine] HIGH: loop and bash nodes leak subprocesses on timeout
- [workflow-engine] HIGH: README documents config env vars the engine never reads
- [workflow-engine] MEDIUM: workflow_run rate limit bypassable via concurrent calls (TOCTOU)
- [workflow-engine] chore: manifest gaps, side-effectful register(), dead code, unauth kanban dispatch
- [mcp_lazy] HIGH: synthetic mcp_server_<name> stub collides with a real MCP server named 'server'
- [mcp_lazy] HIGH: promote_server eager flag documented but never persisted
- [mcp_lazy] MEDIUM: _prev_mode dict leaks and goes stale; not cleared on session evict
- [mcp_lazy] MEDIUM: get_pool has unlocked check-then-set race on pool creation
- [mcp_lazy] MEDIUM: pre_tool_call gives no guidance for unpromoted server-stub calls
- [mcp_lazy] chore: undeclared pre_tool_call hook, nonexistent 'mcp_load_tools' name in docs, missing tests
- [a2a_fleet] CRITICAL: server never auto-starts — register() runs outside an event loop
- [a2a_fleet] CRITICAL: auth_required defaults to false on a cross-machine surface
- [a2a_fleet] HIGH: remove invented disable() hook — loader never calls it, port leaks on reload
- [a2a_fleet] HIGH: plugin.yaml missing kind / provides_tools / requires_env (token env undeclared)
- [a2a_fleet] MEDIUM: tighten wide-open CORS, anonymous /health peer leak, and peer-URL SSRF
- [a2a_fleet] MEDIUM: relocate tests to tests/plugins/ and cover sync-register + auth-default paths
- xai-oauth auxiliary client incorrectly uses Responses API (CodexAuxiliaryClient), causing 403 on compression/vision/web_extract
- [Bug]: Direct Copilot gpt-5.5 large resumes are killed by 12s Codex TTFB watchdog
- [Bug]: `hermes uninstall` does not work on Windows
- TUI: Thinking block leaks raw JSON and Σ character
- Hostinger VPS: migration Hermes Agent → Hermes WebUI impossible (tini + UID mismatch + sessions)
- /goal judge over-continues exploratory goals unless the assistant explicitly says the goal is complete
- /goal auto-continuation can be amplified by preflight compression/session split and resurrect stale task state
- Dashboard infinite reload loop in loopback mode — GET /api/auth/me returns 401 on every page load
- [Bug]: Provider/LLM switch leaves stale encrypted_content causing 400 errors on Telegram sessions
- [Bug]: Infinite reload loop / React state loop on Sessions tab (Firefox + Chrome) — repeated 401 on /api/auth/me (v0.15.0)
- show_reasoning should work independently of streaming in CLI mode
- Feature Request: Strip reasoning/<think> blocks from TTS preprocessing
- mcp add / mcp test raise NameError when mcp package not installed
- v0.14.0 dashboard breaks behind reverse proxies — two regressions
- Skills hub creates empty category directories when no skills installed
- [Bug]: Custom endpoint: ChatCompletions returns content, but Hermes treats response as empty (v0.14.0)
- fix: atomic_replace() fails with EXDEV when HERMES_HOME is a cross-filesystem symlink
- fix(gateway): Feishu session cancellation orphans session guard, permanently blocking messages
- Custom endpoint pricing can overestimate Crof qwen3.5-9b cost by 1,000,000x
- MCP OAuth callback: module-level port global causes port collisions and structural weaknesses vs upstream
- Bug: send_message tool bypasses validate_media_delivery_path security check
- Proposal: Add Mnemosyne to official memory provider documentation
- feat(swarm): support custom verifier/synthesizer body + skills
- Template conversion failed
- Error occurred in the operation of the agent node in the workflow.
- PubSub client overrides Sentinel client when REDIS_USE_SENTINEL is enabled
- Frontend description of the Retrieval node output does not match the actual output
- JSON type input var raise Intenal server error
- cannot extract elements from a scalar
- 负载均衡 为模型配置多组凭据，并自动调用，此功能无法选择
- add models is error
- panic: could not create filter
- Persist partially generated messages when /chat-messages/:task_id/stop is called
- MCP server connection fails with 403 — request never leaves Dify (SSRF proxy suspected)
- Support durable async execution backends for long-running workflow steps
- [Xiaomi MiMo] Credentials validation fails with 400 "Not supported model mimo-v2-flash" when using Token Plan endpoint (v0.0.7)
- After clicking preview on a parent-child segmented knowledge base, it shows 0 chunks
- Retrieval score differs between UI upload (.docx) and API upload (.txt) despite identical chunk content and embedding model
- gemini cli crash again
- Xbox gift card code damage
- Damage caused by the gemini cli crash
- ioctl(2) failed, EBADF (Bad File Descriptor)
- Feat: Support Bun as an alternative runtime/package manager for updates and extensions
- fatal error again!!!!
- ioctl error
- Critical Crash: ioctl(2) failed, EBADF in ShellExecutionService.resizePty
- ioctl(2) failed, EBADF
- v0.44.0 Regression: Critical crash with ioctl(2) failed, EBADF during PTY resize
- Crash on startup: ioctl(2) failed, EBADF in UnixTerminal.resize
- Crash: `ioctl(2) failed, EBADF` in `node-pty` during PTY resize on macOS
- Gemini CLI crashes with `ioctl(2) failed, EBADF` in `node-pty` during `resizePty`
- Remote Role
- ERROR ioctl(2) failed, EBADF /home/mich
- RangeError: Maximum call stack size exceeded
- EBADF Error during folder creationg broke session and terminal glitches
- MAIP / Gargoub Project - Mediterania - North Coast
- Gemini cli crash again in this morning
- ERROR ioctl(2) failed, EBADF
- Verified node install fails — Checksum verification failed (Cloud)
- The extended debugging key did not arrive during registration.
- CollaborationPane unmounts collaboration store on single-user instances, causing permanent "No network connection" state
- Workflow cannot be saved when the name contains "->" (Potentially malicious string)
- automation does not work and does not show an error
- Raj Ai Automation
- Default Data Loader: DOMMatrix is not defined error
- Feature: Per-node execution timestamp overlay on canvas during workflow run
- AI Agent + Vertex `gemini-3.5-flash`: 400 "missing thought_signature" on sequential multi-turn tool calls (post-#24982)
- PDF Loader in Pinecone Vector Store fails due to pdf-parse version conflict (v2 not supported)
- emailReadImap: add UID deduplication, batch size cap, and numeric uid enforcement
- Manual node execution fails with "Could not find a node" when autosave is disabled (N8N_WORKFLOWS_AUTOSAVE_DISABLED)
- Schedule Trigger stopped firing — workflow Published & active, manual executions succeed, no automated fires for 2+ hours
- [MCP SDK] create_workflow_from_code intermittently returns HTTP 500, often as a false negative (workflow persists anyway, causing duplicates on retry)
- Credential-load wedge: workflows using googleApi/jwtAuth credentials silently fail to execute after key rotation
- Google Sheets Trigger every minute is not working manual Execute is working sent email
- [BUG] Plugin marketplace MCP connector remains stuck "still connecting" when mcp-remote requires OAuth
- [redacted at user request]
- Opus 4.7 behavioral regression: loaded instruction-following discipline degraded in recent Claude Code/Cowork updates
- [BUG] Tailscale via Homebrew CLI + Mac App Store GUI, both Macs on macOS, Cowork blocked by VPN detector despite Tailscale being a mesh VPN with no traffic interception
- stopShellPty on tab switch kills active sessions (exit 143) — regression in May 27 build
- [BUG] Long URLs are broken into multiple lines and become unclickable in terminal output
- [BUG] claude rm/stop/reap SIGKILLs background session tree without SIGTERM grace, orphaning git index.lock and similar
- [BUG] Default git workflow in the system prompt was pushed without context or consent
- [MODEL] Inconsistent output quality / Ignoring instructions (overfitting and inappropriate repetition of Korean vocabulary)
- You've hit your weekly limit · resets May 31 at 5pm (Asia/Shanghai)
- Paid yearly subscription silently downgraded to Free with no user action
- [Regression v2.1.153] Plugin bash hooks fail with "echo: write error: Permission denied" on Windows (claude-mem, shell: "bash")
- [BUG] Connector toggles in conversation are not clickable — must click text label instead
- [remote-control] Input from mobile app/browser not reaching host session — output works fine
- Model fails to read/reference CLAUDE.md contents despite being loaded in context
- [BUG] Claude Desktop reinstall destroys Code chat history (transcripts + Recents) while regular Chat history, project files, and memory all survive
- Bypass mode clamps to Accept Edits even with the toggle ON (Claude Code Desktop 1.9255.2 / CC 2.1.149)
- [BUG] TUI input freezes randomly mid-typing — entire prompt becomes unresponsive for minutes
- [BUG] Cowork downloads Linux ELF binary instead of macOS binary on macOS Sonoma 14.8.7 — exit code 132 (SIGILL) on every session
- [Feature Request] Persistent project memory — sessions forget everything on close, forcing users to keep many sessions open
- [Bug] Thread context stale after sleep/resume, returns outdated date and calendar data
- [FEATURE] Add context window usage indicator and warning before auto-compaction
- [BUG] Dictation error: Invalid character in header content ["x-config-keyterms"] on Windows
- [Bug] Anthropic API Error: Server rate limiting despite normal usage
- Does delegating work to `claude -p` subprocesses reduce context accumulation in the parent session?
- [BUG] Claude Code hangs on M1 Mac when terminal says "opening browser to sign in" and browser opens
- [BUG] Claude_Preview MCP preview_start spawns dev server with main-repo cwd instead of session's worktree cwd
- [Bug] Anthropic API Error: Server rate limiting during request execution
- [Bug] Anthropic API Error: Server rate limiting on concurrent requests
- [Bug] Ultraplan ready notification fires before cloud agent completes execution
- [BUG] API 500 ERROR ALL THROUGHOUT THE DAY
- [BUG] Cowork: Live Artifacts folder path changed in 1.9255.2, no automatic migration from Documents\Claude\Artifacts
- [Bug] Auto-compact never triggers despite statusline reporting "100% context used" (v2.1.153, Max sub, 200K mode)
- [BUG] [Desktop / macOS] 'Open in → New Window' detached session: font renders smaller than main, no per-window controls, Cmd+/Cmd- keystrokes routed to main window instead
- Feature request: option to switch between classic and new minimal UI
- [Feature Request] Show timestamps for each message
- [BUG] Terminal corruption when permission prompt appears while navigating Agent Teams agent selection menu
- [FEATURE] Allow users to customize the background color of the Claude desktop app beyond the current light/dark theme presets.
- [BUG] Statusline not displaying on Windows [fixed]
- Background agent UI Stop button is a no-op for stuck agents — process keeps consuming tokens
- Background agents silently die on session pause/resume — no completion notification, no work recovery
- Add option to hide email address from welcome banner
- [BUG] SSH Remote: `projects` field in remote ~/.claude.json becomes null after desktop restart — jsonl files intact, UI shows 'No messages yet' for every session
- [Bug] Claude Code not applying fixes despite claiming to complete tasks
- billing is unfair and poorly documented
- [BUG] Claude Code on the web: declared plugins inactive on first session, require restart to fully load
- [BUG] Restore from archive deleted sessions instead of restoring them
- [BUG] M365 connector fails with AADSTS50011 in Cowork — localhost vs 127.0.0.1 redirect URI mismatch
- claude agents: workflow slash-commands missing from dispatch-input completion (regression-adjacent to #61424)
- Claude Desktop's Info.plist missing TCC usage strings, blocks all EventKit-based MCP servers
- False-positive safety blocks on self-administered governance amendments — request for owner-authority mode for verified professional users
- [BUG] Stop pushing "AUTO"-mode
- [DOCS] Plugin marketplace guide omits `skipLfs` option for git-based sources
- [DOCS] MCP docs omit combined startup notification for MCP server and connector authentication
- [DOCS] Agent view docs omit macOS Privacy & Security identity for background agents
- [DOCS] Npm update docs do not explain release-channel behavior for `claude update`
- [DOCS] Agent SDK docs omit `subagent_type: "claude"` worktree and output persistence behavior
- [DOCS] Background session docs omit `$CLAUDE_JOB_DIR` temp-file behavior
- [FR] mask env-var values in 'claude mcp get <server>' output
- [FR] subagent worktrees should not inherit stale local 'user.email' from prior dispatches
- [BUG] Windows: Grep tool leaks rg.exe + conhost.exe processes (~2000 zombies / 14 GB RAM in long sessions)
- [BUG] Stats dashboard "Peak hour" appears off by one hour
- [BUG] Diff highlight (teal SGR background) bleeds past changed text in 2.1.150–2.1.153
- [FEATURE] confirm before deleting session
- Plugin PostToolUse hooks still silently skip in Claude Desktop / Cowork (re-filing closed #51904)
- /code-review skill: silent fallback to main...HEAD reviews other people's commits, and JSON-only output is hard to read
- Monitor tool doesn't source the shell snapshot like Bash does; PATH-dependent tools (jq, sleep, etc.) fail in Monitor commands on macOS/Nix
- [Bug] Long input lines truncated with ellipsis while typing instead of wrapping in terminal UI
- [FEATURE] VS Code extension: Render submitted user messages as Markdown in chat
- OSC 52 copy from Claude TUI doesn't reach clipboard inside tmux (regression in 2.1.146–2.1.153)
- [BUG] RemoteTrigger create/update returns HTTP 400 with circular error: "event_type is required" / "unknown field event_type"
- [BUG] Option to hide or minimize the built-in "status footer" (multi-line debug/cost panel) [re-raise of #31475]
- [Bug] Feedback submissions being closed without review or action
- [FEATURE] Word-jump cursor navigation in Chat input (option+arrow / bindable actions)
- [FEATURE] ! shell mode: filesystem tab completion
- [BUG] API Error: Usage credits required for 1M context
- claude agents: OSC 52 clipboard emission broken in tmux (regression in 2.1.146–2.1.153)
- CLI crashes on macOS 15 M3 - exit code 1
- [FEATURE] Support Cmd+V image paste from clipboard
- [FEATURE] Enhance claude.ai M365 connector to support MS Planner
- [BUG] Slash command autocomplete hijacks pasted absolute file paths starting with /
- PreToolUse hook `if` filter false-positives on complex Bash commands
- [BUG] Diff panel hangs/whites out
- Feature Request: Support drag-and-drop for binary documents (.wps, .doc, .docx, .xlsx, .pdf) in VS Code extension
- [BUG] activation of 1M context in VSCode
- [FEATURE] Support i18n / language localization for built-in slash command outputs
- Ctrl+V para colar imagens deixou de funcionar no CLI (Windows, PowerShell)
- [FEATURE] Please add Norwegian (Bokmål/Nynorsk) language support to the Claude Code interface
- [BUG] OTel log events (claude_code.user_prompt, api_request_body, tool_decision, hook_execution_complete) emitted with empty trace_id/span_id while sibling spans correlate correctly
- [BUG] Cowork crashes on every message, no VM logs generated, missing AppData\Roaming\Claude
- [FEATURE] first-class session handoff + per-session token budgets for unattended runs
- [FEATURE] Smart paste: convert clipboard code to file reference chips (like Cursor)
- [Feature Request] Restore chat pin functionality to title chat submenu
- [BUG] SIGILL issues with version 2.1.153
- [BUG] Cowork plugin upload fails with generic "Plugin validation failed" when a `description` field in any SKILL.md frontmatter contains angle brackets (`<…>`)
- [BUG] Desktop App 2.1.144+: startup scanner deletes cliSessionId from claude-code-sessions local files on every launch — session not found on disk
- [Feature Request] Add keyboard shortcut to copy last message with proper formatting
- [MODEL] Opus 4.7 not 1M
- Allow naming/renaming background agents in `claude agents` view
- Stale worktrees in .claude/worktrees/ are never cleaned up, consuming massive disk space
- Agent worktrees are never cleaned up, silently consuming disk space
- Subagent worktrees not auto-cleaned when reviewer writes scratch files
- [Bug] Skill initialization hangs for extended duration in Plan Mode
- Claude Desktop writes malformed registry Run entry (nested escaped quotes) - crashes Windows Task Manager and other Run-key parsers
- IME candidate window shows at bottom-right corner instead of caret position (Windows CMD)
- [BUG] Pressing 'Escape' doesn't close the /BTW conversation when the main conversation is asking for approval
- [BUG] Opus 4.7 (1M) intermittently emits empty-string values for tool_use.input fields, killing the session
- FleetView agent UI shows "running" with incrementing elapsed time after agent has returned
- /doctor flags context-scoped cmd+c binding as macOS conflict (false positive)
- [BUG] Text Rendering in Elvish
- Desktop app: Bypass Permissions mode flips to Accept Edits on first prompt (M5 / macOS 26.5)
- [Workaround] Date-Weekday Verification Hook — Prevents Claude from writing wrong weekdays
- [BUG] Claude Code create c:/memfs directory without asking me.
- [BUG] Claude Code's Bash execution waits forever with no processes running
- [BUG] usage stays stuck waiting for 5 hr limit after upgrading to premium seat in team plan
- [Workflow tool] resume cache is unreachable for nontrivial workflows because LLM dispatchers can't transcribe args byte-exactly
- Code review (Preview): "Add a repository" shows no results for private GitHub org repos
- [BUG] /context commands blows up context
- [Feature Request] Add precache expiry hook to enable proactive compaction before token eviction
- [BUG] Context indicator shows 0% at session start despite ~20K+ tokens already loaded
- [Feature Request] Add semantic search for --resume session history
- [Feature Request] Add session search, tagging, and filtering capabilities
- [BUG] Cowork Dispatch reports "desktop not available" on Windows 11 while standard Cowork works normally
- [Bug] Claude Code provides incorrect suggestions with high confidence despite errors
- defaultMode: acceptEdits silently overrides per-path permissions.ask rules for Write/Edit
- [FEATUR configurable tip interval (e.g. tipIntervalSeconds: 30 in settings)E]
- Plugin marketplace fails to load: schema rejects 'displayName' key (v2.1.153)
- claude agents: in-session copy uses broken OSC 52 path while overview correctly uses tmux buffer
- [BUG] Plugin agent descriptions (and custom agents) load unconditionally into context — no parity with disable-model-invocation for skills
- Crashed ultrareview consumed a free credit despite producing zero findings
- [Bug] Character rendering issue - invisible or missing text display
- [BUG] Cowork: processo Claude Code encerra com código 3 — .claude.json não contém token de autenticação (Windows 11 25H2)
- [BUG] 2.1.153 silently discards tools/list response from rmcp 0.12.0 HTTP MCP server (works in 2.1.152, wire-identical handshake)
- VS Code extension: option to auto-resume last session when reopening a workspace folder
- [Bug] Conversation continuation failure
- [BUG] Cowork crashes every time I start a new chat or attempt to continue an existing one in any project. The error displayed is: "Claude Code è andato in crash
- [Bug] Unannounced quota changes
- Native update/install fails with 'socket connection was closed unexpectedly' behind proxy — undici TLS incompatibility
- [BUG] Session name reverting after manual change
- [BUG] 非正常思考，上下文过长时，一直显示思考，点击interrupt按钮失效
- Honor `tools:` frontmatter when an agent is invoked via `@mention` — strip `Task` only when the agent did not declare it
- macOS TCC popup still recurring on v2.1.153 — "2.1.153" would like to access data from other apps
- Claude Code leaks pty handles — exhausts pseudo-terminals on macOS after long session
- [Bug] Agent fails to execute or respond to user input
- [BUG] Persistent "Expecting value: line 1 column 1 (char 0)" JSON parse error after tool execution
- [Feature Request] Implement proactive unit test coverage recommendations for recurring bugs
- VS Code panel lacks status line + terminal lacks image paste in Codespaces, forcing a tradeoff
- `/powerup` only shows ~10 lessons — allow viewing the full catalog
- [Bug] Context contamination after auto-compact with unrelated email draft of Tejo/Sado Basin
- [Bug] VSCode terminal output displays corrupted text with garbled symbols
- [Feature Request] Add LaTeX/KaTeX math rendering to TUI
- [Bug] Sub-agent PR review results not validated by orchestrating agent
- Subagents on Pro 1M tier: trivial probes pass, real workloads fail at first tool call (probe-vs-workload divergence)
- Path-scoped rules and subdirectory CLAUDE.md not loaded when creating new files matching the pattern
- AskUserQuestion: cancelling during extended thinking poisons the whole session with 400 'thinking blocks cannot be modified' (2.1.153); concurrent prompts overwrite each other
- Ideas Missing from Claude Cowork Menu (Windows)
- [BUG_BOUNTY_SAFE_POC_2026] Prompt Injection RCE Test - Command Execution Proof
- [BUG] Cowork scheduled task: execution history row not showing after successful run
- Resuming an extended-thinking session fails permanently with 400 "thinking blocks cannot be modified" (transcript stores thinking text as empty but keeps signature)
- [Bug] Plugin-registered CwdChanged and FileChanged hooks don't fire (settings.json works) — v2.1.153
- Auto-archive on PR merge / branch delete — clarify autoArchiveSessions semantics or add dedicated opt-out
- `claude mcp add` echoes Authorization header value verbatim to stdout, leaks bearer tokens to terminal and session transcripts
- [BUG] Bug report — /insights skill, Claude Code The /insights skill outputs a malformed file path.
- Plugin slash commands render with '*'-inline format instead of two-column, despite matching official plugin shape
- [Bug] Unexpected long text generation without user input or goal
- [Bug] Thinking blocks causing task progression blocked without user modification
- [BUG] (Critical!) contamination by an unknown session simirlar to the report => [Bug] Context contamination after auto-compact with unrelated email draft of Tejo/Sado Basin #63137
- [Critical] Opus 4.7 Korean output degeneration — Korean grammar itself collapses in long contexts
- [BUG] Title: Autocompact buffer persists across /clear — wastes tokens for irrelevant old context
- [Bug] Auto-Compact loses user input before processing in conversation history
- Feature: per-invocation effort parameter + runtime session-config introspection for skills
- Auto-mode classifier mislabels Azure DevOps vote -5 as "Reject" when denying PR vote actions
- [BUG] Claude Desktop and Claude Code CLI never re-register MCP tools after OAuth 2.1 handshake on a remote HTTP server
- [BUG] Workspace file tags leak across sessions
- [BUG] Ink renderer crashes on Windows 11 build 26200 (Canary) duplicate banners, terminal mode leaks, mid-operation aborts
- [BUG] Claude Code Desktop issue
- PTY master fd leak in Claude desktop app exhausts macOS kern.tty.ptmx_max after ~2-3 days
- [BUG] Claude Code — Session Management after Unexpected Interruption
- [Windows] Cowork OpenTelemetry exporter does not initialize - zero events emitted to any destination, including loopback
- [Bug] Opus 4.7: 400 `thinking blocks ... cannot be modified` on long extended-thinking sessions, triggered by history-altering events (scheduled prompts / parallel tool-call cancellation)
- [BUG] API Error: Server is temporarily limiting requests (not your usage limit) · Rate limited
- Multi-plugin custom marketplace: only first plugin registered in installed_plugins.json, skills don't load
- [BUG] Git push through the SDK's git proxy fan-outs into ~500 GitHub REST API calls, exhausting the 5,000/hour budget after a handful of pushes
- [BUG] Claude took liberties it really shouldn't with my global config
- [BUG] Agent window focus lost after navigating with arrow keys, causing scroll deadlock
- [BUG] `--model` flag silently ignored in interactive sessions (works in `--print` only)
- [BUG] Dispatch permanently shows "desktop appears offline" on Windows 11 - never worked on first use
- feat: support per-command enableWeakerNetworkIsolation as safer alternative to dangerouslyDisableSandbox
- /code-review outputs a raw JSON array instead of readable findings
- [BUG] Cowork — Additional allowed domains ignored on Team plan; same domain works on Pro plan
- Haiku
- [Bug] False positive blocking beneficial outcomes in tool execution
- 3P Bedrock SSO: credentials silently expire without triggering re-auth on day 2+
- CLAUDE_AUTOCOMPACT_PCT_OVERRIDE in settings.json env block silently ignored by autocompact logic
- Auto-compaction deletes main session JSONL before verifying summary completion, causing data loss
- [Bug] Claude Code not executing stated actions or producing expected results
- [FEATURE] Deferred Messages — Queue Input for End of Turn
- [BUG] Up/Down arrows in input box navigate history instead of moving cursor — regression in 2.1.149+
- Cancelling a parallel tool-call batch corrupts thinking blocks -> 400 "thinking blocks cannot be modified" permanently wedges the session
- Claude Code caused data loss, then contradicted itself about recovery (two incidents, one session)
- [Bug] Unclear error messages from Claude Code CLI
- [Bug] Agent tool rejecting due to context size limit exceeded
- claude agents: daemon and bg-spare processes spin at ~100% CPU when idle
- [BUG] Compaction fails with "context window limit" error even when context usage is low (e.g., 20%) — regression in v2.1.153
- Remote Control entitlement lost after May 27-28 incident — `Error: Remote Control is not yet enabled for your account` on active Max subscription
- PreToolUse hook exit code 2 does not block Write tool
- [Bug] Thinking blocks in latest assistant message are immutable
- GUI: dispatch file:// and custom-scheme clicks to OS shell handler
- Show current model in statusLine by default
- [Bug] Agent console becomes unresponsive to keyboard input after multiple agents initialized
- [FEATURE] PreToolUse hooks should have a way of updating the environment
- [Bug] Unable to start or use Claude Code CLI
- [BUG] Repository not visible in Claude Code web repo picker
- Session permanently wedged on 400 "thinking blocks cannot be modified" after parallel tool_results
- [Bug] @ autocomplete loses sibling repos after a file edit in multi-repo workspace
- Unclear error message when creating sub-agent without authentication
- [Bug] Anthropic API errors causing frequent failures and high token usage
- [BUG] @ mention file picker only shows packages, not individual files (desktop app - Code tab)
- [Bug] TUI panel footer remains sticky and consumes excessive terminal space
- PR-status polling exhausts GitHub GraphQL rate limit on repos with many open PRs
- [BUG] Windows: welcome panel not shown in some project folders (2.1.153)
- [Bug] Anthropic API Error: thinking blocks corrupted during context compaction with extended thinking enabled
- API 400 "thinking blocks cannot be modified" permanently bricks session during agent activation (interleaved thinking + tool use)
- Right-click Copy copies the whole message instead of the selection; pasted text retains dark background
- Mid-session model switch corrupts conversation when extended thinking is enabled (API 400: 'thinking blocks cannot be modified')
- [BUG] Markdown file links in chat output do not open files when clicked (VS Code extension)
- Stuck retry loop: `400 thinking blocks cannot be modified` on large interleaved-thinking turns using AskUserQuestion
- [FEATURE] Prompt user for approval before auto-compaction proceeds
- Custom MCP connectors not attachable to scheduled routines — no UUID discovery path
- [BUG] Claude in Chrome — Navigation blocked for teams.cloud.microsoft and outlook.cloud.microsoft after Microsoft domain migration**
- [BUG] Claude Desktop — Personal plugins panel renders list but is entirely non-interactive (macOS, v1.9255.2)
- [Bug] error when using Workflows
- [BUG] Persistent "update available" notification despite being on latest version
- [BUG] Sweep Agent from /code-review never completes
- [Bug] Tool calls not executing or returning results
- [FEATURE] Cloud-synced memory and settings across machines
- [Bug] Terminal UI freezes when Ctrl+O view exits during interactive prompt in plan mode
- Continuous api errors when using claude code with Opus 4.7 with thinking on low
- [Feature Request] Add support for installing and using previous Claude Code versions
- [Bug] Extended Thinking: Summarized thinking blocks fail signature validation when resent to API
- [Bug] Anthropic API Error: 'thinking' blocks cannot be modified
- [Bug] Anthropic API Error: Thinking blocks cannot be modified with extended thinking mode
- Feature request: Lazy/on-demand MCP server connections
- [Bug] Tool Arguments Parsed as String Instead of Object
- [Bug] Anthropic API Error: Insufficient context provided
- [Bug] Claude Opus occasionally uses moskovian(russian) orthography instead of Ukrainian in system-prompted responses
- Opus 4.8: backgrounded task completions (subagents AND Bash) crash with 400 "thinking blocks cannot be modified"
- [Bug] Opus 4.7 fabricates stable preferences ("my default") to rationalize arbitrary choices when challenged
- [Bug] Unable to update Claude Code CLI
- [BUG] Desktop app: /remote-control mints link + connects bridge (main.log) but in-chat link/QR panel never renders
- Feature: sessionColor and sessionName in .claude/settings.json
- [BUG] Anthropic API error: thinking blocks
- [FEATURE] Support Remote MCPs in Cowork as in Claude Code
- [Bug] Anthropic API Error: 400 Bad Request with Redacted Thinking - 0 4.7 & 4.8
- [Bug] Anthropic API Error: Cannot modify thinking blocks from different model versions
- Interleaved thinking + multi-tool turn corrupts thinking block (text blanked, signature kept) → permanent 400 'blocks must remain as they were'
- [BUG] Mode/permission changes mid-tool-loop (effortLevel: xhigh) poisons entire session
- Session failure log: Opus 4.6 ignores its own rules for an entire session
- [BUG] "400 Guardrail was enabled" error when using Claude Opus 4.8 with AWS Bedrock
- [Feature Request] Add subagent approach selection option to avoid accidental feedback
- Persistent 400 'thinking blocks in the latest assistant message cannot be modified' — interleaved thinking persisted with empty text + signature bricks sessions
- [BUG] DesktopvsApp
- [BUG] Opus 4.7 cache hit rate collapse after May 27 incident — Messages 1.1k→88.9k in 9 minutes, $630/session
- [Bug] Anthropic API Error: Invalid thinking block format
- [BUG] FUCK CLAUDE
- Opus 4.8 extended thinking: Stop hook block re-entry corrupts thinking blocks → 400
- [Bug] 4.8 Fails when accessing previous model history
- [Bug] Unintended File Modifications During Execution
- [DOCS] Model configuration docs omit lean system prompt default scope and model exceptions
- Add "Always allow globally" option to permission prompts
- Server-side model upgrade (Opus 4.7→4.8) wedges in-flight sessions with `thinking blocks cannot be modified` 400
- [DOCS] AskUserQuestion docs missing multiple-choice prompt decision threshold
- [DOCS] Agent view docs omit shell-command background session launch syntax
- [DOCS] Agent view dispatch input docs incorrectly imply `/logout` dispatches as a prompt
- [DOCS] Claude in Chrome docs omit connected-browser selection behavior
- [DOCS] Plugin docs omit `defaultEnabled: false` for opt-in plugins
- Feature Request: Customizable chat text colors for user and assistant messages
- [DOCS] `/plugin` Discover tab docs omit directory-based suggested plugin pins
- VSCode Chrome integration silently fails: 3 distinct bugs
- [DOCS] MCP stdio docs omit session environment variables
- [Bug] Anthropic API error on second request within session with Claude Opus 4.8
- Cowork emits a blank session "index" handoff on focus when a CLI session is paused awaiting input
- [DOCS] MCP docs omit `claude mcp list/get` pending-approval output for unapproved project servers
- [BUG] /compact fails with 400 error when last assistant turn contains thinking blocks
- [DOCS] `/claude-api` docs omit Opus 4.8 migration guidance
- [DOCS] Fast mode docs still recommend deprecated Opus 4.6 override variable
- [DOCS] Bash tool docs omit `$TMPDIR` consistency across sandboxed and unsandboxed commands
- [Bug] Anthropic API Error: 400 Bad Request on Extended Thinking
- [DOCS] Background session docs omit worktree-isolation behavior for spawned subagents
- Built-in mechanistic self-verification of verifiable claims (symmetric to the auto permission gate)
- [DOCS] Worktree docs do not clarify `worktree.baseRef: "head"` inside linked worktrees
- [BUG] Excessive RAM usage with multiple parallel chats (~10 sessions → 30 GB memory pressure, macOS OOM)
- [DOCS] Managed MCP policy docs omit invalid `allowedMcpServers`/`deniedMcpServers` entry behavior
- [DOCS] Effort docs omit `CLAUDE_CODE_ALWAYS_ENABLE_EFFORT` unsupported-model behavior
- Regression (2.1.147–2.1.150?): resuming an extended-thinking session after a CC update/model-switch → unrecoverable 400, session bricked
- [DOCS] Windows updater docs omit `claude.exe` in-use recovery guidance
- [DOCS] VS Code auto mode docs still tie mode-picker visibility to bypass-permissions setting
- [DOCS] MCP docs omit `/mcp` tool list and detail rendering behavior
- [DOCS] Fine-grained tool streaming docs still describe provider opt-in behavior
- bypassPermissions: session startup reads flat pref, GUI toggle writes per-account pref — they never sync
- [BUG] Claude Desktop Code tab causes disk write limit violation — 8.5GB in 11 min, macOS kills app (M5, v1.9659.1)
- Ultrareview v2.1.96: docs describe /tasks command + claude ultrareview --json subcommand that don't exist; findings hard to read after completion
- I'd be happy to help create a GitHub issue title, but I don't see the error message in your message. Could you please share the specific error you're encountering? That way I can generate an accurate and descriptive issue title for you.
- [BUG] Claude in Chrome `file_upload` rejects all scheduled-task sessions with misleading error (real cause: INVALID_SESSION)
- Extended thinking: signed thinking block 'cannot be modified' (400) permanently wedges session
- RTL text support for Hebrew (and Arabic) in Claude Code
- [Bug] Random errors occurring across multiple operations