Server has 24 well-named tools with consistent verb_noun patterns (search_, get_, list_, create_, manage_). All tools have descriptions (avg ~80 chars, baseline 194). Input schemas are present with typed parameters and descriptions. However, output schemas are NOT documented, critical gap for LLM planning. Error handling is minimal (generic try-catch). No tool annotations (readOnlyHint, destructiveHint). Parameter descriptions are brief but present. Missing: enum constraints on sort/order/state params, pagination guidance in descriptions, and recovery hints in error messages.

• Document output schemas for all tools. For get_repository, specify: returns {id, name, owner, stars, language, description, url, ...}. Use JSON Schema or TypeScript interfaces in comments.
• Add tool annotations: mark create_issue, create_label, manage_labels with destructiveHint=true; mark all read-only tools with readOnlyHint=true; mark idempotent tools (e.g., get_*) with idempotentHint=true.
• Convert sort/order/state parameters to enums. E.g., sort: enum=['created','updated','comments'] instead of type:string. This prevents hallucinated values.
• Enhance error messages with recovery hints. E.g., 'File not found at path/to/file. Try list_directory(owner, repo, path) to see available files.' Use pattern:recovery-guide.
• Add pagination guidance to list_* tool descriptions. State default and max per_page, and clarify that results are paginated. E.g., 'Returns paginated results (default 30 per page, max 100). Use page parameter to iterate.'