docs(otel): document litellm.request.route on the LLM call span - #1185
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The row promised the normalized inbound route. It carries the same string the root span reports as http.route: the FastAPI route template, or the literal path on a passthrough prefix.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
yucheng-berri
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Sep 5, 2026
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yucheng-berri
approved these changes
Sep 5, 2026
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Summary
Adds the
litellm.request.routerow to the OTel v2 LLM span attribute table. The key is emitted only on the proxy and carries the same value as the root SERVER span'shttp.route: the FastAPI route template on a normal route, the literal path on a passthrough prefix, and, when no server span exists (route excluded viaOTEL_PYTHON_FASTAPI_EXCLUDED_URLSor FastAPI instrumentation not installed), the route the proxy recorded at auth. Pairs with BerriAI/litellm#39698 (Resolves LIT-6459)Link to Devin session: https://app.devin.ai/sessions/8f826e7e7cf44af999aa5a354f95ef70
Open in Devin Desktop: https://app.devin.ai/desktop/session/8f826e7e7cf44af999aa5a354f95ef70?variant=devin
Requested by: @yucheng-berri