Bug Description

When using kimi-k2.5 model with api.moonshot.cn (Moonshot China endpoint), all API calls fail with HTTP 400 error:

Error code: 400 - {'error': {'message': 'invalid temperature: only 1 is allowed for this model', 'type': 'invalid_request_error'}}

Root Cause Analysis

The _fixed_temperature_for_model() function in agent/auxiliary_client.py only checks for api.moonshot.ai but not api.moonshot.cn:

Current code (line 158-159):

# Public Moonshot API has a stricter contract for some models than the
# Coding Plan endpoint — check it first so it wins on conflict.
if base_url and "api.moonshot.ai" in base_url.lower():

Missing: api.moonshot.cn endpoint support.

According to the comment on line 157, the code should "Support both .ai (international) and .cn (China) endpoints", but the implementation only checks for .ai.

Configuration to Reproduce

model:
  default: kimi-k2.5
  provider: custom
  base_url: https://api.moonshot.cn/v1
  api_key: sk-...

Reproduction Steps

1. Configure Hermes to use Moonshot China endpoint:

   hermes config set model.base_url https://api.moonshot.cn/v1
   hermes config set model.default kimi-k2.5

2. Start a conversation with Hermes
3. Observe 400 error: invalid temperature: only 1 is allowed for this model

Expected Behavior

The _fixed_temperature_for_model() function should recognize api.moonshot.cn and force temperature=1.0 for kimi-k2.5, just like it does for api.moonshot.ai.

Proposed Fix

File: agent/auxiliary_client.py
Line: 159

Change from:

if base_url and "api.moonshot.ai" in base_url.lower():

To:

if base_url and ("api.moonshot.ai" in base_url.lower() or "api.moonshot.cn" in base_url.lower()):

This matches the intent described in the comment and fixes the issue for China users.

Verification

I applied this fix locally and confirmed:

• ✅ kimi-k2.5 on api.moonshot.cn now works correctly
• ✅ Temperature is correctly forced to 1.0
• ✅ No regression for other models or endpoints

Environment

Related

• Similar fix was applied for trajectory_compressor.py which correctly checks both endpoints:

  if "moonshot.ai" in url or "moonshot.cn" in url or "api.kimi.com" in url:
      return "kimi-coding"

• Issue #9125: Related temperature issues with kimi models

• Issue #11764: kimi-for-coding temperature issues