LiteLLM passes extra parameters as top-level JSON fields in the request
body. _extract_agent_name() now reads agent_id and agent_name from the
body first, then falls back to X-Agent-Name / X-Agent-Id headers.
Critically, both fields are stripped from the body before any upstream
call — otherwise Claude/LM Studio reject the unknown parameters.
Applied to all four route handlers: /v1/chat/completions, /v1/messages,
/api/chat, /api/generate.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
gitprov
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