Server has 9 tools with complete input schemas and descriptions. Naming follows verb_noun convention (list_, get_, create_, close_, add_, merge_, search_). Descriptions are present and explain destructive vs. read-only operations. However, parameter descriptions are sparse (many lack detail beyond type), output schemas are not documented, and error handling guidance is minimal. The confirm pattern for destructive operations is well-designed but not universally applied (e.g., search_code lacks confirmation despite being a read-only operation). No tool annotations (readOnlyHint/destructiveHint) present in source. Average description length ~120 chars (below 194 baseline). Parameter descriptions average ~40 chars (below 72 baseline).

• Add output schema documentation for all tools. E.g., 'Returns: {issues: [{id, number, title, state, created_at, updated_at}], total_count}' in list_issues description or a separate schema field.
• Expand parameter descriptions to 50-100 chars each. E.g., 'owner: GitHub organization or user account name (e.g., 'torvalds' for linux kernel)' instead of bare 'Repository owner/organization'.
• Add tool annotations to the MCP server implementation: readOnlyHint=true for list_*, get_*, search_*; destructiveHint=true for create_*, close_*, add_*, merge_*.
• Include recovery hints in descriptions of lookup tools. E.g., get_issue: 'If issue not found, call list_issues to verify the issue number and repository.'
• Document pagination for list_issues and list_pull_requests. Add limit parameter (default 20, max 100) and document that results are capped to prevent context window exhaustion.