NameFinder MCP has well-structured tool definitions with consistent naming (verb_noun pattern), complete input schemas using Zod, and clear descriptions. All 4 tools follow the verb-first convention (generate_, check_). Descriptions are concise (50-100 chars) and explain WHAT the tool does. However, output schemas are not documented, LLMs cannot predict response structure for downstream planning. Error handling is basic (generic error wrapping). Tool annotations (readOnlyHint, openWorldHint) are present and correct. Parameters have type constraints and descriptions, but lack examples of expected output format. No pagination guidance despite tools that may return multiple results.

• Document output schemas for each tool. Example: 'generate_names returns {suggestions: [{domain, tld, available, price, brandability_score}], total_checked}'. This enables LLMs to extract fields for follow-up calls.
• Enhance error messages with recovery guidance. Replace 'NameFinder API returned 500' with 'NameFinder API error (500). Retry in 30s or check status at namefinder.dev/status. If persistent, try a simpler query.'
• Add result-limiting guidance to check_all_tlds and check_socials. Document expected result size and recommend pagination if results exceed 50 items.
• Expand parameter descriptions with format constraints. E.g., 'domain: fully qualified domain (e.g., example.com, sub.example.io). Must include TLD, no wildcards, max 253 chars.'
• Add idempotency note to tool descriptions. E.g., 'This tool is read-only and idempotent, safe to retry on network failure. Same input always returns same result.'