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fix: resolve MCP bridge timeout on slow LLM endpoints (#1769)#1772

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zhu6201976 wants to merge 1 commit intounclecode:mainfrom
zhu6201976:fix/1769-mcp-bridge-timeout
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fix: resolve MCP bridge timeout on slow LLM endpoints (#1769)#1772
zhu6201976 wants to merge 1 commit intounclecode:mainfrom
zhu6201976:fix/1769-mcp-bridge-timeout

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@zhu6201976
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Problem:
The current mcp_bridge uses httpx.AsyncClient with its default 5-second timeout. When interfacing with LLM-backed endpoints (especially complex reasoning tasks or slow TTFT), this frequently triggers a TimeoutException, resulting in an isError response even when the backend is functioning correctly.

Solution:

Increased the httpx timeout to 300 seconds (5 minutes) to accommodate typical LLM processing times.

Implemented a structured httpx.Timeout(300.0, connect=10.0) for better connection management.

Added explicit error handling for httpx.TimeoutException to provide clearer feedback to the user.

Impact:
Improved stability for MCP-based workflows, particularly when using agents or slow upstream LLM APIs.

How to test:
Set up an MCP bridge pointing to a mock endpoint with a >5s delay.

Verified that the request now completes successfully instead of timing out at 5s.

Verified that requests exceeding 300s return the new descriptive error message.

@unclecode
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Thanks for taking the time to contribute this fix! Your work helped identify and solve this issue - the fix was implemented on the develop branch (via a different approach) and will be in the next release. We've added you to our CONTRIBUTORS file in recognition of your effort. Closing this PR as the fix is already on develop.

@unclecode unclecode closed this Mar 7, 2026
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2 participants