All 5 tools have basic schemas and descriptions, but quality is inconsistent. Naming follows verb_noun convention (ic_search, ic_get, ic_list), which is good. However, descriptions are minimal (10-50 chars), parameter descriptions lack detail about constraints/formats, and output schemas are completely undocumented. No error handling guidance, no pagination limits stated, and no indication of what fields are returned. The server exposes a custom context injection pattern (_context) that is non-standard and undocumented. Overall, this is a functional but minimal implementation that would struggle in production agent scenarios.

• Document output schemas for all tools. Example: ic_get_contact should return {id, email, name, phone, created_at, ...}. This enables LLMs to chain tools and extract relevant fields.
• Expand descriptions to 100-200 chars. Include WHEN to use each tool and WHAT it returns. E.g., 'Search for Intercom contacts by email or name. Returns matching users and leads with IDs for follow-up queries.'
• Add constraints to pagination params: per_page (1-100, default 20), page (≥1), starting_after (cursor string). Document max result limits and whether total_count is returned.
• Replace _context injection with proper OAuth token handling via server initialization or environment variables. Document how the MCP server obtains and manages Intercom credentials.
• Add error handling that returns structured errors with recovery hints. E.g., {error: 'not_found', message: 'Contact not found. Try ic_search_contacts() with a partial email.', retryable: false}.