Document HTTPX2 instrumentation

[alexmojaki]

Summary

• document that logfire.instrument_httpx() supports both HTTPX and HTTPX2
• explain that global instrumentation covers both installed libraries while a client argument targets one client
• clarify that the Logfire extra installs neither HTTP client
• document the HTTPX2 OpenTelemetry version requirement and compatible upgrade command
• make HTTPX2 discoverable in the integrations index and navigation

Validation

• uv run pytest tests/test_docs.py -q (125 passed)
• validated docs/nav.json with python -m json.tool
• smoke-tested global instrumentation with HTTPX and HTTPX2 mock transports

The documentation changes were drafted with Codex and reviewed against the merged implementation and the repository documentation style guide.

[devin-ai-integration]

Devin Review found 1 potential issue.

[coderabbitai]

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📝 Walkthrough

Walkthrough

The HTTPX integration documentation now covers both HTTPX and HTTPX2, including installation requirements, usage examples, client selection, troubleshooting, compatibility guidance, and reference links. The integrations table and navigation label were also updated from “HTTPX” to “HTTPX and HTTPX2” without changing the instrumentation call or destination link.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately summarizes the main change: adding HTTPX2 instrumentation documentation.
Description check	✅ Passed	The description clearly matches the documented HTTPX/HTTPX2 instrumentation updates and related docs/navigation changes.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/docs-httpx2

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@docs/integrations/http-clients/httpx.md`:
- Around line 13-14: Update the introductory statement around
logfire.instrument_httpx() to qualify that both HTTPX libraries are instrumented
only when opentelemetry-instrumentation-httpx is version 0.65b0 or newer; note
that older versions warn and skip HTTPX2 while preserving the existing
single-library behavior.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: ffbdba44-97c5-4a69-8572-84d08932ff9d

📥 Commits

Reviewing files that changed from the base of the PR and between 692ec02 and e38858e.

📒 Files selected for processing (3)

• docs/integrations/http-clients/httpx.md
• docs/integrations/index.md
• docs/nav.json

🔗 Linked repositories identified

CodeRabbit considers these linked repositories for cross-repo context during reviews:

• pydantic/logfire (manual)
• pydantic/pydantic-ai (manual)
• pydantic/platform (auto-detected)
• pydantic/pydantic (auto-detected)