Single tool 'search' has well-structured schema with all parameters typed and described. Description is clear and actionable (187 chars, within 10-1024 baseline). However, output schema is not documented in the visible code, and error handling lacks recovery guidance. The tool follows verb_noun naming (search_*) and provides useful guidance on parameter usage. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) present. Overall quality is above average but missing documentation for output structure and comprehensive error patterns.

• Add explicit output schema documentation to the search tool. Document that it returns a structure with fields like 'results' (array of snippet objects), 'total' (count), and per-result fields (id, title, repo_name, language, code, relevance_score). Use JSDoc or Pydantic model documentation visible in the tool registration.
• Add tool annotation tags to the search tool: @readOnlyHint true (since it is READ_ONLY). This helps MCP clients understand the tool is safe to call without side effects.
• Enhance error messages with actionable recovery guidance. Change 'Query text is required' to 'Query text is required. Provide a non-empty search term to find code snippets.' Change 'Limit must be a positive integer' to 'Limit must be between 1 and 50. Use 10-20 for targeted searches, 30-50 when exploring.'
• Explicitly document parameter constraints in descriptions. Update the limit description to state: 'Maximum number of results to return. Must be a positive integer between 1 and 50 (defaults to 10). Use higher limits (30-50) when exploring broadly, lower limits (10-20) for targeted searches.'
• Add context about when to use optional filters. Update repo_name and language descriptions to include hints like 'Use this filter only after initial search reveals relevant repositories' to guide multi-step planning.