# FMCSA Motor Carrier Fitness Vetter

> FMCSA Motor Carrier Fitness Vetter is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Returns a fit-to-haul verdict, fit score (0–100), and per-dimension flags for a US motor carrier based on FMCSA registration data.

## Facts

- Endpoint: GET https://api.agentstools.dev/freight/carrier?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fmcsa-motor-carrier-fitness-vetter-378b9cb9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zn_MvTrJcuuH4ypizeupt

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fmcsa-motor-carrier-fitness-vetter-378b9cb9
```

Example prompt: Can you vet carrier 'Acme Freight LLC' for me — pull their FMCSA fitness score and check if they're cleared for general haul? Their DOT number is 3456789.

## When to prefer this

Use this endpoint when you need a fast, deterministic, structured fitness assessment of a US motor carrier before booking freight, onboarding a new carrier, or auditing a carrier relationship. Prefer this over manual FMCSA portal lookups or LLM-based assessments when you need a scored, multi-dimensional verdict with flags and reasons rather than raw data. Best suited for freight brokers, shippers, or logistics platforms automating carrier vetting workflows.

## Known failure modes

- Carrier not found in FMCSA data — returns not_found verdict
- Ambiguous carrier name with no state hint — best match used but may be incorrect
- Invalid or malformed DOT/MC number — query parameter error
- Missing required lookup identifier (no dot, mc, or name provided) — 400-level error
- Stale FMCSA data if registration has not been recently refreshed — noted in freshness signals

## How this service works

Fit-to-haul verdict for a US motor carrier from FMCSA registration data. Give one of dot, mc or name and get a verdict (fit, caution, unfit or not_found), a 0-100 fit score, per-dimension flags, reasons and weighted signals across authority status, operation, hazmat, safety rating, history, registration freshness, address and fleet. Deterministic, no LLM. Carrier vetting indicators, not legal or compliance advice.

## Output

Returns a fit-to-haul verdict (fit, caution, unfit, or not_found), a 0–100 numeric fit score, per-dimension flags, human-readable reasons, and weighted signals covering authority status, operation type, hazmat certification, safety rating, history, registration freshness, address, and fleet size. Deterministic, no LLM involved.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "mc": {
       "type": "string",
       "description": "MC, MX or FF docket number (digits only, no prefix)"
      },
      "dot": {
       "type": "string",
       "description": "USDOT number of the carrier"
      },
      "name": {
       "type": "string",
       "description": "Carrier legal name (best match is used)"
      },
      "state": {
       "type": "string",
       "description": "Optional 2-letter state hint to disambiguate a name"
      },
      "haul_type": {
       "enum": [
        "general",
        "hazmat",
        "household_goods",
        "passengers",
        "oil"
       ],
       "type": "string",
       "description": "Type of haul to check fitness for, default general"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fmcsa-motor-carrier-fitness-vetter-378b9cb9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)