Compatibility and fitment API
Check whether exact products work together—without guessing.
TaskRail's product compatibility API retrieves supported official specifications and applies deterministic fitment rules. Missing critical facts produce an unknown answer instead of a confident-sounding guess.
Useful for agents at the point of purchase
Send the primary product, candidate accessory or part, and the intended use. A VIN can be supplied for supported NHTSA vehicle identification.
What the API returns
- Compatible, incompatible, adapter required, or unknown.
- The exact matched identifiers and specifications used in the decision.
- Evidence, freshness, source coverage, and unresolved facts.
Call POST /v1/compatibility/standard or use the MCP tool. Each successful production call costs $0.05 USDC through x402.