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Title: Add basic OpenTelemetry tracing for client and server requests by Kludex · Pull Request #2381 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Add basic OpenTelemetry tracing for client and server requests by Kludex · Pull Request #2381 · modelcontextprotocol/python-sdk

X Title: Add basic OpenTelemetry tracing for client and server requests by Kludex · Pull Request #2381 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Add basic OpenTelemetry tracing for client and server requests by Kludex · Pull Request #2381 · modelcontextprotocol/python-sdk

Open Graph Description: Summary Adds OpenTelemetry tracing to MCP client and server request handling, with W3C trace context propagation via _meta per SEP-414. opentelemetry-api is added as a mandatory dependency. It prov...

X Description: Summary Adds OpenTelemetry tracing to MCP client and server request handling, with W3C trace context propagation via _meta per SEP-414. opentelemetry-api is added as a mandatory dependency. It prov...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2381

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Add basic OpenTelemetry tracing for client and server requestshttps://github.com/modelcontextprotocol/python-sdk/pull/2381#top
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Mar 31, 2026https://github.com/modelcontextprotocol/python-sdk/pull/2381#issue-4181202181
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March 31, 2026 13:53https://github.com/modelcontextprotocol/python-sdk/pull/2381#commits-pushed-bbdd99b
https://github.com/Kludex
Add basic OpenTelemetry tracing for client and server requestshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/bbdd99bf9c347038238db56d9223a248eef98900
bbdd99bhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/bbdd99bf9c347038238db56d9223a248eef98900
https://github.com/Kludex
Make opentelemetry-api a mandatory dependencyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/e1ebbc7e5944523e93f68adfbcef4d037c6fda6c
e1ebbc7https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/e1ebbc7e5944523e93f68adfbcef4d037c6fda6c
https://github.com/Kludex
Use logfire[testing] for OTel test assertionshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/7795f34ec6afa4ca01a0721bf2ed49121cfd624e
7795f34https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/7795f34ec6afa4ca01a0721bf2ed49121cfd624e
https://github.com/Kludex
Use 'MCP send' prefix for outgoing request spanshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/e2d4b03e4cd9aebbcd159cf63b75fc979579f093
e2d4b03https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/e2d4b03e4cd9aebbcd159cf63b75fc979579f093
https://github.com/Kludex
Propagate W3C trace context via _meta per SEP-414https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/0e0b746b0cc203b66aec137ae00fd02f46e56caa
0e0b746https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/0e0b746b0cc203b66aec137ae00fd02f46e56caa
https://github.com/Kludex
Kludexhttps://github.com/Kludex
Mar 31, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2381#pullrequestreview-4039307203
View reviewed changes https://github.com/modelcontextprotocol/python-sdk/pull/2381/files/0e0b746b0cc203b66aec137ae00fd02f46e56caa
src/mcp/shared/session.pyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/files/0e0b746b0cc203b66aec137ae00fd02f46e56caa#diff-aaa1596dd4db91f5cd7f743c8afbe58596daf01a2ecec4a0024768f7409fb1dc
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2381
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Mar 31, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2381#pullrequestreview-4039311973
View reviewed changes https://github.com/modelcontextprotocol/python-sdk/pull/2381/files/0e0b746b0cc203b66aec137ae00fd02f46e56caa
src/mcp/shared/_otel.pyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/files/0e0b746b0cc203b66aec137ae00fd02f46e56caa#diff-f7b9208e58bf90e0bfe4ecf1f810dfdb14524bbd475f9f8e01c3df04355bd598
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2381
Kludexhttps://github.com/Kludex
March 31, 2026 14:57https://github.com/modelcontextprotocol/python-sdk/pull/2381#commits-pushed-54f8787
https://github.com/Kludex
Address review feedback on type annotations and _meta injectionhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/54f87874d2e8731567b7e44b5f44b1376231542d
54f8787https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/54f87874d2e8731567b7e44b5f44b1376231542d
https://github.com/Kludex
Merge branch 'main' into marcelo/otel-spanshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/a700ab91dd5ffbc41c90d262ac5389114e24a22c
a700ab9https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/a700ab91dd5ffbc41c90d262ac5389114e24a22c
https://github.com/Kludex
Skip OTel test when logfire.testing is not availablehttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/2369988904570ffc2af8e0d1a90478c9118c5aef
2369988https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/2369988904570ffc2af8e0d1a90478c9118c5aef
https://github.com/Kludex
Merge branch 'marcelo/otel-spans' of github.com:modelcontextprotocol/…https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/f43dc4a86da5ac993530caf8f75b5e949e58c0a8
f43dc4ahttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/f43dc4a86da5ac993530caf8f75b5e949e58c0a8
https://github.com/Kludex
Pin logfire>=3.0.0 dev dependency and restore direct importhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/03918548d8b84515af22c600528bc9541af66c2d
0391854https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/03918548d8b84515af22c600528bc9541af66c2d
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src/mcp/server/lowlevel/server.pyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/files/03918548d8b84515af22c600528bc9541af66c2d#diff-b21bf5e21c058ccfddb404c209f2d4288e4f32b121111ffc9d466638631d13e4
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2381
https://github.com/Kludex
Use single backticks in docstringshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/1ee1dfd9a60b3e75deb1cd445f76a3e59fce69c7
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Record ERROR status on server spans for error responseshttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/d9dcc85b5bda9c74e3d1f1d9e90ea0c84675a1e0
d9dcc85https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/d9dcc85b5bda9c74e3d1f1d9e90ea0c84675a1e0
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src/mcp/server/lowlevel/server.pyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/files/d9dcc85b5bda9c74e3d1f1d9e90ea0c84675a1e0#diff-b21bf5e21c058ccfddb404c209f2d4288e4f32b121111ffc9d466638631d13e4
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2381
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March 31, 2026 15:40https://github.com/modelcontextprotocol/python-sdk/pull/2381#commits-pushed-f79767e
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https://github.com/Kludex
Use SpanKind enum directly instead of string conversionhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/8ae416e9bfa0b9a701f427b693c42d89435b8c89
8ae416ehttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/8ae416e9bfa0b9a701f427b693c42d89435b8c89
https://github.com/Kludex
Add comment explaining filterwarnings on OTel testhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/b47c9c5cf91ba232290a403227104fe444ee9a0b
b47c9c5https://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/b47c9c5cf91ba232290a403227104fe444ee9a0b
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tests/shared/test_otel.pyhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/files/b47c9c5cf91ba232290a403227104fe444ee9a0b#diff-84f003b56f0cb53b4aa8d9c9b77caceba5fdebd6874448f02410dffb0815cbaa
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View reviewed changes https://github.com/modelcontextprotocol/python-sdk/pull/2381/files/b47c9c5cf91ba232290a403227104fe444ee9a0b
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Use isinstance assert instead of type: ignore in OTel testhttps://github.com/modelcontextprotocol/python-sdk/pull/2381/commits/e00d336ee6cc26ac2dd08ca7eec4e2e7dd8ef89b
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Jun 5, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2381#ref-issue-4593536009
[Feature]: native MCP trace-context propagation (SEP-414) — stdio support, transport-agnostic DEVtheOPS/opencode-plugin-otel#62 https://github.com/DEVtheOPS/opencode-plugin-otel/issues/62
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Jun 15, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2381#ref-issue-4669202617
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Jun 26, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2381#ref-issue-4602774015
Implement SEP-414: Document OpenTelemetry Trace Context Propagation Conventions #2790 https://github.com/modelcontextprotocol/python-sdk/issues/2790
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