litellm - 💡(How to fix) Fix [Bug]: vectorStores.retrieve/delete fail with model=None while vectorStores.create/files.* work [1 participants]

model_list:
  - model_name: gpt-5.2
    litellm_params:
      model: openai/gpt-5.2
      api_key: os.environ/OPENAI_API_KEY

general_settings:
  master_key: os.environ/LITELLM_MASTER_KEY

---

const client = new OpenAI({
  apiKey: 'xxxxxxx',
  baseURL: 'http://localhost:4000/v1',
  defaultHeaders: { 'x-litellm-model': 'gpt-5.2' },
  defaultQuery: {  model: 'gpt-5.2' },
});

---

return await processor.base_process_llm_request(
    ...
    route_type="avector_store_retrieve",
    model=None,
    ...
)

---

const vs = await client.vectorStores.create({
  name: 'test-all-functions',
  expires_after: {
    anchor: 'last_active_at',
    days: 1,
  },
});

---

await client.vectorStores.retrieve(vs.id);

---

await client.vectorStores.delete(vs.id);

---

09:59:12 - LiteLLM Proxy:ERROR: common_request_processing.py:1495 - litellm.proxy.proxy_server._handle_llm_api_exception(): Exception occured - 400: {'error': 'avector_store_delete: Invalid model name passed in model=None. Call `/v1/models` to view available models for your key.'}
Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/litellm/proxy/vector_store_endpoints/endpoints.py", line 538, in vector_store_delete
    return await processor.base_process_llm_request(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<16 lines>...
    )
    ^
  File "/usr/lib/python3.13/site-packages/litellm/proxy/common_request_processing.py", line 979, in base_process_llm_request
    llm_call = await route_request(
               ^^^^^^^^^^^^^^^^^^^^
    ...<4 lines>...
    )
    ^
  File "/usr/lib/python3.13/site-packages/litellm/proxy/route_llm_request.py", line 563, in route_request
    raise ProxyModelNotFoundError(
    ...<2 lines>...
    )
litellm.proxy.route_llm_request.ProxyModelNotFoundError: 400: {'error': 'avector_store_delete: Invalid model name passed in model=None. Call `/v1/models` to view available models for your key.'