# WebsterBerry Synaptic Carrier Safety Check

> WebsterBerry Synaptic Carrier Safety Check is a paid API for AI agents from synaptic.websterberrymarketing.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Look up a US motor carrier by USDOT or MC number to verify operating authority, insurance, safety rating, fleet size, and out-of-service rates from FMCSA data.

## Facts

- Endpoint: GET https://synaptic.websterberrymarketing.com/agents/04-carrier-safety-check?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/websterberry-synaptic-carrier-safety-check-7520986b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cPcUHRfSfif-kBrCUix1Y

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 websterberry-synaptic-carrier-safety-check-7520986b
```

Example prompt: Can you check the FMCSA safety profile for the carrier with DOT number 1234567 — I need to know if they're allowed to operate, what their safety rating is, and whether they have insurance on file?

## When to prefer this

Use this endpoint when you need to verify the legitimacy, compliance status, and safety record of a US motor carrier before assigning freight, signing a contract, or conducting due diligence. Prefer this over general web searches when you need structured, authoritative FMCSA data including operating authority, insurance confirmation, and safety ratings in a single call.

## Known failure modes

- DOT or MC number not found in FMCSA database — carrier may not exist or number is incorrect
- Missing both dot and mc query parameters — request returns an error
- Carrier exists but has no safety rating yet (new entrant) — rating field may be null or absent
- FMCSA data may be slightly delayed relative to real-time regulatory changes

## How this service works

Check a US motor carrier by USDOT or MC number: allowed to operate, operating authority, insurance on file, safety rating, fleet size and out-of-service rates. Source: FMCSA.

## Output

Returns FMCSA-sourced data for the specified carrier including whether they are allowed to operate, their operating authority status, insurance certificates on file, safety rating (satisfactory/conditional/unsatisfactory), fleet size, and out-of-service rates for drivers and vehicles.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "mc": {
       "type": "string",
       "description": "MC docket number (alternative to dot)"
      },
      "dot": {
       "type": "string",
       "description": "USDOT number"
      }
     }
    }
   },
   "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/websterberry-synaptic-carrier-safety-check-7520986b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synaptic.websterberrymarketing.com](https://www.zero.xyz/host/synaptic.websterberrymarketing.com/llms.txt)