feat(openai): Set gen_ai.tool.definitions for the Chat Completions API

[alexander-alderman-webb]

Description

Set the attribute according to the schema defined in

https://github.com/getsentry/rfcs/blob/main/text/0153-decoupling-sentrys-generative-ai-conventions-from-open-telemetry.md

Issues

Reminders

• Please add tests to validate your changes, and lint your code using uv run ruff.
• 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

[github-actions]

Codecov Results 📊

✅ 99578 passed | ⏭️ 6733 skipped | Total: 106311 | Pass Rate: 93.67% | Execution Time: 349m 55s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -240
Passed Tests	📉 -191
Failed Tests	📉 -1
Skipped Tests	📉 -48

➖ Removed Tests (1)

View removed tests

• test_continuous_profiler_auto_start_and_stop_sampled_span_streaming[non-experiment-thread]
  • File: tests.profiler.test_continuous_profiler

All tests are passing successfully.

✅ Patch coverage is 83.33%. Project has 2504 uncovered lines.
❌ Project coverage is 89.87%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/ai/_openai_completions_api.py	81.25%	⚠️ 6 Missing and 10 partials

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    89.88%    89.87%    -0.01%
==========================================
  Files          193       193         —
  Lines        24686     24719       +33
  Branches      8814      8838       +24
==========================================
+ Hits         22188     22215       +27
- Misses        2498      2504        +6
- Partials      1400      1410       +10

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[cursor]

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

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