Server has 5 tools with complete schemas and descriptions. Naming follows verb_noun pattern (claim_, get_). Descriptions are detailed and context-aware (avg ~180 chars), exceeding baseline of 194 chars. All parameters have type definitions and descriptions. However, output schemas are not documented, responses are inferred from code but not formally specified. Error handling is present but inconsistent: claim_api_key returns structured error responses, but other tools throw raw Error objects. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite clear semantic differences (claim_api_key is WRITE, others are READ_ONLY). Parameter constraints are well-specified (enums, min/max), but no guidance on pagination or result limits for get_profiles (which accepts count 1-100 but no offset/limit pattern).

• Document output schemas for all tools. Specify return type (object with fields), field types, and which fields are always present vs optional. Example: 'Returns {key: string, status: string, email: string}' for claim_api_key.
• Add tool annotations via MCP SDK. Mark claim_api_key with destructiveHint=true (modifies state). Mark get_* tools with readOnlyHint=true. This enables agents to reason about retry safety and side effects.
• Standardize error handling. Wrap all tool errors in a consistent response structure: {content: [{type: 'text', text: '<actionable error message>'}], isError: true}. Include the invalid value and constraint violated.
• Expand get_profile description to ~150 chars. Explain: 'Fetch a single profile by UUID. Use after get_profiles to retrieve full details for a specific profile. Returns all available fields (name, email, job, address, etc.).'
• Add pagination to get_profiles. Accept optional 'offset' parameter (default 0) and return 'total_count' and 'has_more' in response. Document: 'Supports pagination; call with offset=100 to fetch next batch.'