This MCP server exposes 24 tools for a registry API. Most tools have basic descriptions (50-150 chars) and input schemas with type definitions, but critical gaps undermine quality: (1) Parameter descriptions are sparse or missing entirely, many params lack explanations of format, constraints, or valid values. (2) Output schemas are not documented; LLMs cannot infer what fields to expect from responses. (3) Error handling is absent, no guidance on recovery, retryability, or actionable error messages. (4) Tool naming is inconsistent: searchServers vs searchServersAdvanced vs getAllServers perform overlapping functions without clear disambiguation. (5) No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite clear read/write distinctions. (6) Authentication requirements ('requires authentication', 'requires admin authentication', 'requires sync secret authentication') are mentioned in descriptions but not formalized in the schema or error handling. Baseline: 549 production tools average 194-char descriptions and 100% have param annotations; this server averages ~100 chars and ~40% have param descriptions.

• Document output schemas for all tools. For each tool, specify the response object structure, field types, and which fields are required. Example: 'Returns {servers: [{id, name, description, category[], github_stars, verified, status}], total: number, page: number}'.
• Expand parameter descriptions to include format constraints and valid ranges. For 'limit' params, state '(default: 10, max: 100)'. For 'status' params, state 'one of: active, maintaining, stale, archived'. For 'minRating', state 'numeric value 0-5'.
• Add tool annotations to the schema. Mark read-only tools with readOnlyHint=true. Mark destructive tools (delete, archive) with destructiveHint=true. Mark idempotent tools with idempotentHint=true. This enables LLMs to reason about retry safety.
• Consolidate overlapping search tools. Merge searchServers, getAllServers, and searchServersAdvanced into a single search_servers tool with optional advanced filters (minStars, minRating, tags, status). Reduce cognitive load on LLM tool selection.
• Add error handling guidance. For write tools (create*, add*, import*), document expected error cases: 'Returns 401 if not authenticated. Returns 403 if insufficient permissions. Returns 400 if validation fails (e.g., invalid status value). Retry with corrected input.' This guides LLM recovery.