Single tool with adequate naming (GetUserActivity starts with verb) but significant gaps in schema documentation and parameter descriptions. Input schema visible but minimal, only 'since' parameter with basic type info. No output schema documented. Description is present (34 chars) but below the 50-200 char LLM-optimized baseline. No error handling guidance, no pagination support despite potentially returning many events, no tool annotations. Follows basic tool structure but lacks production-grade rigor.

• Expand tool description to 80-150 chars: 'Retrieve the authenticated user's recent GitHub activity (pushes, PRs, issues, comments, stars). Returns events in reverse chronological order. Use this to generate standup summaries or check recent work. Optionally filter by date range using the 'since' parameter.'
• Document output schema explicitly: return a structured object with fields like {events: [{type, repo, action, timestamp, details}], total_count, has_more, next_cursor} instead of markdown string.
• Add pagination: introduce 'limit' (default 20, max 100) and 'cursor' parameters. Return total_count and next_cursor in response to enable multi-page fetches.
• Enhance 'since' parameter description: 'ISO 8601 datetime or relative string (e.g., "2 days ago"). If omitted, defaults to last 30 days. Timezone: interpreted as local time on the client.'
• Add error handling: return structured errors like {error: 'rate_limited', retry_after_seconds: 60} or {error: 'no_activity', message: 'No GitHub events found since 2024-01-15. Try expanding the date range.'}

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry