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fix(agent): restrict think=False to Ollama/local endpoints only #11362

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fix(agent): restrict think=False to Ollama/local endpoints only #11362

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12 changes: 10 additions & 2 deletions run_agent.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6780,13 +6780,21 @@ def _build_api_kwargs(self, api_messages: list) -> dict:
options["num_ctx"] = self._ollama_num_ctx
extra_body["options"] = options

# Ollama / custom provider: pass think=false when reasoning is disabled.
# Ollama-only: pass think=false when reasoning is disabled.
# Ollama does not recognise the OpenRouter-style `reasoning` extra_body
# field, so we use its native `think` parameter instead.
# This prevents thinking-capable models (Qwen3, etc.) from generating
# <think> blocks and producing empty-response errors when the user has
# set reasoning_effort: none.
if self.provider == "custom" and self.reasoning_config and isinstance(self.reasoning_config, dict):
# NOTE: guard on Ollama/local endpoints only — cloud custom providers
# (Mistral, Fireworks, Together.ai, vLLM remote, etc.) reject the
# `think` parameter with HTTP 422.
_is_ollama_endpoint = (
"ollama" in self._base_url_lower
or ":11434" in self._base_url_lower
or is_local_endpoint(self.base_url or "")
)
if _is_ollama_endpoint and self.reasoning_config and isinstance(self.reasoning_config, dict):
_effort = (self.reasoning_config.get("effort") or "").strip().lower()
_enabled = self.reasoning_config.get("enabled", True)
if _effort == "none" or _enabled is False:
Expand Down