chore(docs): add OpenAI Agents SDK LLM analytics installation

[andrewm4894]

Summary

Add onboarding content for OpenAI Agents SDK integration with PostHog LLM analytics.

Changes

• docs/onboarding/llm-analytics/openai-agents.tsx - installation guide

Covers:

• Basic setup with instrument() helper
• Multi-agent workflows with handoffs
• Tool/function call tracking

Related

• posthog-python PR: feat(ai): add OpenAI Agents SDK integration posthog-python#408
• Requires corresponding mdx wrapper in posthog.com (will create separately)

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: e87695f2ef

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[chatgpt-codex-connector]

Remove unused CalloutBox destructure

The CalloutBox entry is destructured from useMDXComponents() but never used in this file. Because tsconfig.json enables noUnusedLocals and includes docs/onboarding/**/*, this will fail the TypeScript check (e.g., pnpm --filter=@posthog/frontend typescript:check) and block the build. Either remove CalloutBox from the destructuring or add a usage.

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[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

style: CalloutBox is imported but never used. Consider removing it or adding a "Proxy note" callout similar to other LLM integration docs to clarify that PostHog doesn't proxy calls.

_{Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!}

Prompt To Fix With AI

This is a comment left during a code review.
Path: docs/onboarding/llm-analytics/openai-agents.tsx
Line: 8:8

Comment:
**style:** `CalloutBox` is imported but never used. Consider removing it or adding a "Proxy note" callout similar to other LLM integration docs to clarify that PostHog doesn't proxy calls.

<sub>Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!</sub>

How can I resolve this? If you propose a fix, please make it concise.

[github-actions]

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[github-actions]

Docs from this PR will be published at posthog.com

Project	Deployment	Preview	Updated (UTC)
posthog.com	🤷 Unknown	Preview	Jan 27, 2026, 5:54 PM

Preview will be ready in ~10 minutes. Click Preview link above to access docs at /handbook/engineering/