14 tools with consistent naming (verb_noun pattern) and basic schemas. However, descriptions are generic and lack LLM-optimization guidance. Parameter descriptions are minimal (1-2 sentences). No output schemas documented. Error handling is absent, no recovery guidance, no actionable error messages. Missing idempotency hints for destructive operations. Tool composition is reasonable but lacks chaining metadata (e.g., thread_id not returned from publish_thread to enable immediate reply). Security: credentials injected via env (good), but no permission gates or audit trail hints.

• Add output schemas to every tool. Document returned fields, types, and which IDs enable chaining (e.g., publish_thread returns thread_id for use in create_reply).
• Expand descriptions to 80-150 chars. Include WHEN to use, prerequisites, and side effects. E.g., 'Publish a new thread to your Threads account. Requires valid text content. Returns thread_id for immediate replies. Rate-limited to 50/day.'
• Add min/max bounds to numeric params (limit: 1-100, days: 1-365) and document valid enum values in descriptions, not just in schema.
• Implement tool annotations: mark delete_thread and manage_reply as destructiveHint=true; mark all get_* as readOnlyHint=true; mark publish_thread as idempotentHint=false (side effect).
• Add error recovery guidance: 'If thread_id not found, call search_my_threads() to locate it. If rate limit hit, wait 1 hour before retrying.'