Glossary
Vehicle data, defined.
Plain-English explanations of the terms behind vehicle data — and the data quality problems underneath them. No filler, no 2,000-word padding. Just what each thing is and where it breaks.
Vehicle Data API
What a vehicle data API returns, why upstream sources disagree with each other, and what to look for before you integrate one.
OBD-II DTC Codes
How diagnostic trouble codes are structured, and why most free lookups skip the parts that matter — severity, safety, and emissions flags.
Federal Vehicle Recalls
How NHTSA recalls work, the weeks-long owner-notification gap, and what it takes to map campaigns to actual vehicles.
Year, Make, Model (YMM)
Why three simple fields explode into trims, submodels, and naming chaos — and what clean YMM data actually looks like.
VIN (Vehicle Identification Number)
How to read a 17-character VIN, and why decoding one is less deterministic than it sounds.
NHTSA
What the federal vehicle-safety agency publishes, and the gap between "the data exists" and "the data is usable in my application."
MCP Server
How the Model Context Protocol gives AI agents sourced answers instead of guesses — and what installing a server actually involves.
Vehicle Specs API
The spectrum of specs APIs — from trim-blind free tiers to five-figure enterprise feeds — and what developers actually need.