fix(langchain): Set agent name as `gen_ai.agent.name` for chat and tool spans by alexander-alderman-webb · Pull Request #5877 · getsentry/sentry-python

alexander-alderman-webb

Description

Set lc_agent_name as the gen_ai.agent.name attribute in on_chat_model_start() and in on_tool_start().

Remove manual accounting of the run_name attribute.

Issues

Reminders

Please add tests to validate your changes, and lint your code using tox -e linters.
Add GH Issue ID & Linear ID (if applicable)
PR title should use conventional commit style (feat:, fix:, ref:, meta:)
For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

New Features ✨

(ci) Cancel in-progress PR workflows on new commit push by joshuarli in #5994

Bug Fixes 🐛

(langchain) Set agent name as gen_ai.agent.name for chat and tool spans by alexander-alderman-webb in #5877

_{🤖 This preview updates automatically when you update the PR.}

alexander-alderman-webb changed the title ~~fix(langchain): Set agent name as gen_ai.agent.name~~ fix(langchain): Set agent name as gen_ai.agent.name

Mar 31, 2026

Codecov Results 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 6.82s

All tests are passing successfully.

❌ Patch coverage is 0.00%. Project has 14939 uncovered lines.

Files with missing lines (1)

File	Patch %	Lines
`langchain.py`	3.24%	⚠️ 568 Missing

Generated by Codecov Action

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

alexander-alderman-webb changed the title ~~fix(langchain): Set agent name as gen_ai.agent.name~~ fix(langchain): Set agent name as gen_ai.agent.name for chat and tool spans

Apr 1, 2026

		)


		def _push_agent(agent_name: "Optional[str]") -> None:

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Nice to be getting rid of this code 🔥