Getting Started

The CarrierOk API gives you access to every FMCSA-registered motor carrier and broker profiles with 300+ data fields per record, updated throughout the day. Search by DOT number, MC number, company name, EIN, phone, email, address, VIN, or license plate.

Free sandbox

Sign up and get a sandbox key instantly. Returns fixture data for 10 hand-picked carriers — no card, no rate limits. Activate live access for $50 (applied as $50 of API credit) when you're ready for real data.

Quick Start

Get your API key

Create a free account to get your API key. You'll find it on the API Keys page once you're signed in.

Make your first request

Request

curl "https://api.carrierok.com/v2/profile?dot_number=568253" \
  -H "Authorization: Bearer YOUR_API_KEY"

Explore the response

Every carrier profile includes identity, authority status, all 7 BASIC percentile scores, ISS score, 50+ risk signals, policy-level insurance, and VIN-decoded fleet data.

See full response schema →

API Endpoints

GET

Carrier Profiles

/v2/profile, /v2/profile-lite, /v2/autocomplete

Full carrier lookup by DOT, MC, name, VIN, plate, phone, email, or address. Lite profiles + typeahead included.

GETPOST

Monitoring

/v2/monitoring/add, /v2/monitoring/remove, /v2/monitoring/list

Add carriers to a watchlist and track authority, insurance, and safety changes

Next Steps

Authentication Rate Limits Explore Profiles API Download OpenAPI spec LLM-ready reference Build with AI