Server has 30 tools with consistent naming (verb_noun pattern) and most have descriptions. However, 8 tools lack visible descriptions in the provided source, and parameter schemas are incomplete across many tools. Input schemas use Zod but lack full type coverage and constraint documentation. Output schemas are not documented. Error handling is basic (generic errorResponse). The server follows a reasonable structure but falls short of production-grade quality due to missing parameter descriptions and undocumented output formats.

• Add descriptions to all 12 undocumented tools. Each should state WHAT it does, WHEN to use it, and any prerequisites.
• Document output schemas for all tools. Create a TypeScript interface or JSON Schema for each tool's return value and include it in tool registration or README. This enables LLM planning and field extraction.
• Replace generic errorResponse() with structured error objects that include error code, user-friendly message, and recovery guidance. E.g., 'Invalid access_token: token expired. Call plaid_createLinkToken() to generate a new one.'
• Add enum constraints to product, webhook_type, and country_codes parameters. Define valid values in Zod schema and document in parameter descriptions. Prevents LLM hallucination of invalid product names.
• Implement confirmation pattern for plaid_removeItem. Add optional 'confirm' boolean parameter (default false) that returns a confirmation prompt on first call, then executes on second call with confirm=true.