The server implements 6 tools with visible schemas and descriptions in index.ts. All tools are named with clear action verbs (search_, get_, list_, save_). Descriptions exist but are terse (10-40 chars) and lack depth. Input parameters have type definitions and brief descriptions, but parameter descriptions could be more detailed. Output schemas are partially documented through TypeScript interfaces but not explicitly documented in tool registrations. Error handling exists but lacks recovery guidance. The code shows careful implementation (proper URL encoding, error handling, pagination awareness) but the tool interface needs stronger LLM-optimized documentation.

• Expand tool descriptions to 50-200 characters following LLM-optimized pattern: 'WHAT: {action}. WHEN: {use case}. RETURNS: {key fields}. E.g., use after search_projects() to get full MR details including author, title, and approval status.'
• Add detailed parameter descriptions with format constraints. E.g., project_id: 'GitLab project ID (numeric) or URL-encoded path (string, e.g., "group/project"). Use get_search_projects() to discover IDs.'
• Expose output schemas in tool definitions. Add a 'schema' or 'returns' section to each tool that documents field names, types, and whether they are required. E.g., get_merge_request returns {id, iid, title, author, state, created_at, merged_at, ...}.
• Enhance error handling with recovery guidance. Replace 'GitLab API error: 404' with 'Project not found (404). Try searching with search_projects(). If the project exists, check that project_id is numeric or a valid URL-encoded path like "group/subgroup/project".'
• Add a confirm_code_review_report tool as a companion to save_code_review_report, or document the file-write side effect prominently in save_code_review_report's description.
• Document resource dependencies in descriptions. E.g., get_merge_request_diffs: 'Requires a valid merge_request_iid. Call search_projects() then get_merge_request() to discover IDs if needed.'
• Consider adding a 'view' parameter description for get_merge_request_diffs explaining the difference between 'inline' and 'parallel' diff views for users unfamiliar with GitLab UI.