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FMCSA Carrier Search
x402
FMCSA Carrier Search is a paid API for AI agents from fmcsa-mcp-843680657471.us-central1.run.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-14).
Searches FMCSA carrier records by state, safety tier, authority status, or cargo type when you don't have a USDOT number
Price / call$0.02
Success—
StatusUnknown
How this service works
Use this when you don't have a USDOT number yet and need to filter carriers by state, safety tier, authority status, or cargo type — for example, every carrier with an unsatisfactory rating in a given state. Capped at 100 rows per call, Active carriers only by default. Billed only when at least one carrier matches; a zero-row result is free.
Output
Returns up to 100 carrier records (default 20) matching the specified filters. Each record includes the carrier's USDOT number, name, authority status, safety tier, cargo types, and state. A zero-result response is free; billing only occurs when at least one carrier is returned.
Example use cases
Flagging unsafe carriers in a state
“Pull up to 100 carriers in Ohio that have an unsatisfactory safety tier — include only active ones — so I can flag them for review.”
Vetting freight partners by cargo type
“Search for active carriers in California that handle Household Goods freight, give me up to 30 results so I can evaluate potential partners.”
Auditing pending-authority carriers
“Find carriers in Florida with a Pending authority status — include inactive ones too — I want to see who's waiting on approval, up to 50 results.”
Technical details
Endpoint
POSThttps://fmcsa-mcp-843680657471.us-central1.run.app/x402/search_carriers?utm_source=zero.xyzWhen to prefer
Use this endpoint when you do not have a USDOT number and need to discover carriers by filtering on geographic (state), regulatory (authority status), safety (tier), or operational (cargo type) criteria. Prefer over lookup_carrier when you are prospecting or auditing a set of carriers rather than retrieving a specific one. Prefer over check_carrier_identity when you are not investigating a suspicious carrier but rather doing broad discovery.
Side effects
- No matching carriers found (zero rows returned, no charge)
- Invalid state code returns validation error
- Unrecognized cargo_type string returns empty results
- limit exceeds 100 is silently capped at 100
- Missing or malformed request body returns HTTP 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum rows to return; the response is capped at 100 regardless. Defaults to 20. |
| state | — | Two-letter US state code (e.g. 'TX'). |
| cargo_type | — | Matches carriers whose cargo_types array contains this value (e.g. 'General Freight'). |
| safety_tier | — | This project's own alert-count tier: 1 means inspected with zero BASIC alerts, higher means more alerted BASICs. |
| authority_status | — | e.g. 'Active', 'Inactive', 'Pending'. |
| include_inactive | boolean | Include Inactive/Pending carriers alongside Active. Defaults to false. |
Tags
x402
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