Significant gaps across naming, descriptions, and schemas. Tool names lack consistent verb prefixes (query_database vs get_user_repos). Descriptions are present but generic (10-50 chars for most tools, well below the 194-char baseline). Parameter descriptions exist but are minimal. Output schemas are not documented, tools return unstructured strings or JSON without declaring expected fields. No error handling guidance. Security concern: query_database accepts arbitrary SQL with optional params, creating SQL injection risk. No input validation or recovery guidance.

• Document output schemas for all tools. Specify field names, types, and structure. E.g., get_repo_details should declare it returns {name, description, language, stars, forks, open_issues, default_branch, created_at, updated_at, clone_url, html_url}.
• Expand tool descriptions to 100-200 chars. Include WHEN to use the tool and what it returns. E.g., 'Fetch all public repositories for a GitHub user. Returns repository names only; use get_repo_details for full metadata.'
• Add pagination to list/search tools. Accept limit (1-100, default 20) and offset or cursor parameters. Return total_count and next_cursor in responses.
• Implement error handling with recovery guidance. Catch HTTP errors and return structured errors: {error_code, message, retryable, suggestion}. E.g., 'User not found. Try search_repositories() with a partial query.'
• Sanitize query_database input. Validate SQL against a whitelist of allowed query patterns (SELECT only, no DROP/DELETE/INSERT). Use parameterized queries exclusively. Consider restricting to read-only operations or requiring explicit confirmation for writes.