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FMCSA Carrier Search API
x402
FMCSA Carrier Search API is a paid API for AI agents from api.govparse.io, paid per call via x402, $1.25/call, status unknown (last checked 2026-09-13).
Search 4.4M+ FMCSA-registered carriers and brokers by name, state, entity type, fleet size, operating status, or authority status to retrieve USDOT numbers and carrier details.
Price / call$1.25
Success—
StatusUnknown
How this service works
Which FMCSA-registered carriers match a name, state, entity type, fleet-size range, operating status, or authority status? Trigram name search over 4.4M+ census records — find a carrier's USDOT number, shortlist carriers in a lane state, or screen brokers vs carriers. Up to 100 rows per call, largest fleets first; total_matched caps at 1000 (total_matched_capped=true means narrow your filters).
Output
Returns up to 100 rows (default 25) of matching carrier records sorted by fleet size descending, each containing USDOT number, legal/DBA name, entity type, operating status, authority status, physical state, power units, and total drivers. Also returns total_matched count (capped at 1000; total_matched_capped=true signals filters need narrowing) and pagination metadata.
Example use cases
USDOT number lookup by carrier name
“I need the USDOT number for Knight Transportation — can you search FMCSA records and pull up their registration details?”
Lane-state carrier shortlist for RFP
“Give me the top 25 largest active trucking carriers physically located in Ohio or Indiana, sorted by fleet size, so I can reach out about a new lane.”
Broker vs carrier screening
“I'm vetting a company called 'FastFreight Logistics LLC' — can you check if they're registered with FMCSA as a carrier or broker, and what their current authority status is?”
Technical details
Endpoint
GEThttps://api.govparse.io/v1/carriers/searchWhen to prefer
Choose this endpoint when you need to search or shortlist FMCSA-registered entities (carriers, brokers, forwarders) by name, geography, fleet size, or authority status across the full 4.4M+ census. It is the right choice for USDOT number lookups by name, carrier vetting before freight tender, lane-state carrier sourcing, and broker/carrier type screening. Prefer sibling endpoints for fetching full carrier details by USDOT (carrier browse/detail endpoint) or for aggregate statistics (FMCSA stats endpoint).
Side effects
- Name fragment too broad returns 1000+ matches with total_matched_capped=true — user must add state, entity type, or fleet-size filters to narrow results
- No results returned when name spelling differs significantly from FMCSA records — trigram search helps but extreme misspellings may yield zero matches
- Invalid state code or enum value for operating_status/authority_status causes a validation error
- Offset beyond available results returns empty rows — check total_matched before paginating
- Rate limiting or payment failure (x402) if USDC balance is insufficient at $0.02 per call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Tags
x402
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