This server defines 2 tools (searchNpmPackages, checkNpmPackage) with reasonable naming and basic descriptions. However, there are significant gaps in parameter descriptions, output schema documentation, and error handling guidance. The tools follow a consistent pattern but lack the rigor expected for production use. Tool names correctly start with action verbs (search_, check_). Descriptions are present but generic (10-20 character range for parameters). Parameter schemas use Zod but descriptions are minimal, 'Search query is required' and 'Maximum number of results to return' lack context about when/why to use them. Output schemas are not explicitly documented; LLMs must infer structure from code. Error handling returns errors but does not guide recovery (e.g., 'Unknown error occurred' gives no actionable next steps).

• Document output schemas for both tools. For searchNpmPackages, explicitly state: 'Returns array of objects with fields: name (string), version (string), description (string), score (object with final, detail.quality, detail.popularity, detail.maintenance).' For checkNpmPackage, document conditional output: 'If exists=true, returns version (string), description (string), keywords (array). If exists=false, error field explains why.'
• Expand parameter descriptions to 50-150 characters with context. Example: searchNpmPackages.query: 'The search term (package name, keyword, or author). Returns matches ranked by quality and maintenance.' searchNpmPackages.limit: 'Maximum results to return (1-20, default 5). Higher limits consume more tokens but show more options.'
• Add error recovery guidance. For searchNpmPackages, on error return: { content: [{ type: 'text', text: 'Search failed: [specific reason]. If the registry is down, retry in 10 seconds. If the query is malformed, try a shorter or simpler term.' }] } For checkNpmPackage, return: { exists: false, error: 'Registry temporarily unavailable (HTTP 500). Retry in a few seconds.' } (vs 'HTTP error! status: 500').
• Add pagination to searchNpmPackages via an optional 'offset' parameter (default 0). Update tool description: 'Returns up to `limit` results. Call again with offset=5, offset=10, etc. to fetch additional pages. Use the returned count field to determine if more results exist.'
• Reduce verbosity in checkNpmPackage response. Remove 'versions' and 'time' fields from the output. Return only: { exists, name, version, description, keywords, error }. If the agent needs version history, create a separate tool (getPackageVersions) that retrieves it on demand.