check_vehicle_eligibility
ChatGPTChecks if a vehicle is eligible for VSC coverage based on its age, mileage, and mechanical specifications. This tool performs a lookup against established eligibility criteria and returns a status. When a VIN is provided and is not already cached, this tool calls the external NHTSA API and writes the decoded result to a Supabase VIN cache (readOnlyHint: false). It does not delete or destructively modify any existing records (destructiveHint: false). Because the first call may write to cache while subsequent calls only read, it is not strictly idempotent (idempotentHint: false). It may call the external NHTSA VIN decoding API (openWorldHint: true).






