[Bug]: /responses
endpoint proxy ignores extra_headers in GitHub Copilot
#13775
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This PR passes the extra_headers parameter through the responses API transformation chain.
Relevant issues
Resolves #13743
Pre-Submission checklist
Please complete all items before asking a LiteLLM maintainer to review your PR
tests/litellm/
directory, Adding at least 1 test is a hard requirement - see detailsmake test-unit
Type
🐛 Bug Fix
Changes
Ensure extra_headers parameter is properly forwarded from the responses() function through the transformation handler and config to maintain header propagation in litellm_completion_request dict.