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litellm/docs
Krish Dholakia 90eb6729d5 Agent Tracing - support context_id based trace id propogation + nested llm calls (#22626)
* style(ui/): distinguish agent calls from llm calls on ui

* feat: initial grouping working

* feat: set stable contextid for a2a calls - allows for easily passing to downstream llm/mcp calls

* feat(a2a_endpoints.py): fix tracing to avoid recreating logging objects for the same call

allows stable trace id usage

* fix(guardrail_endpoints): handle string ui_type values in _build_field_dict

_build_field_dict unconditionally called .value on ui_type, which crashes
for guardrail configs that use plain strings (e.g. BlockCodeExecutionGuardrailConfigModel
uses "multiselect" and "percentage"). Now checks with hasattr before calling .value.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: propagate trace/session id from headers in MCP server calls

Cherry-picked mcp_server/server.py fixes from 6feb9bab: adds
get_chain_id_from_headers to extract x-litellm-trace-id /
x-litellm-session-id from raw headers, and uses it in call_tool
and list_tools to keep spend logs and tracing consistent with A2A.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-03 18:19:12 -08:00
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