MCPFax Vehicle Diagnostics

Look up what a vehicle fault code (OBD-II diagnostic trouble code) means. Returns a reworded definition compiled from open/public sources (with the source and licence per row) plus which makes define the code specifically. Pass 'make' for the make-specific meaning instead of the generic SAE one — the same code can mean different things on different brands. Use this when a scan tool reported a code like P0301, B1318 or U0100; we never guess a meaning (unknown codes return not_found). Descriptions are compilations, not manufacturer verbatim strings, and severity is not guaranteed. Costs $0.006 USDC per call via x402 on Base.

Official NHTSA safety recalls for a vehicle. Returns campaign id, affected component, the safety consequence, and the free remedy, newest first (max 50). Query by make (optionally model and year) or by a known campaign id. Use this before buying a used vehicle or when a customer asks whether their car has open recalls. A zero count means nothing matched the ingested NHTSA subset — it does not prove the vehicle is recall-free. Costs $0.005 USDC per call via x402 on Base.

NHTSA Technical Service Bulletins (manufacturer repair guidance for known defects that are not safety recalls). Returns bulletin id, summary, and the fault codes each bulletin names (max 50). Query by make/model/year, or by fault code to find bulletins that address that specific code. Use this after dtc_lookup when you want the manufacturer's documented fix. A zero count means nothing matched the ingested subset. Costs $0.005 USDC per call via x402 on Base.

Decode a Vehicle Identification Number into make, model, model year, body class, engine and plant country using NHTSA's public vPIC database. Use this when you have a VIN and need the exact vehicle before looking up recalls or bulletins. Costs $0.005 USDC per call via x402 on Base.