gov.carrier-safety

FMCSA motor-carrier (trucking/bus company) safety profile. Pass dot (USDOT number) for the full record: legal/DBA name, state, interstate/intrastate operation, operating-authority status (allowedToOperate), FMCSA safety rating, fleet size (drivers + power units), crash history (total/fatal/injury/tow-away), roadside-inspection history with driver + vehicle out-of-service rates, and the CSA BASIC measures (Unsafe Driving, Hours-of-Service, Driver Fitness, Controlled Substances, Vehicle Maintenance, Hazmat, Crash Indicator) with violation counts. Or pass name to search → matching carriers with their DOT numbers. Free, public-domain US DOT data (keyed). For commercial-auto/freight underwriting, broker/shipper vetting, and vendor due diligence — the authorization + safety record an agent can't get from training.

price

$0.0018 USDC per call

method

GET/api/gov/carrier-safety

payment

x402 v2 · USDC on Base (EIP-3009) or Solana (SPL transfer)

auth

None. Sign the payment, retry with PAYMENT-SIGNATURE.

tier

Tier 0 — no paid upstream

Parameters

Name	Type	Description
`dot`	integer	min 0
`name`	string	min 2 chars · max 120 chars
`limit`	integer	min 1 · max 50

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/gov/carrier-safety?dot=0&name=xx&limit=1'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/gov/carrier-safety?dot=0&name=xx&limit=1' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>'

# Or use the canonical runner (handles probe → sign → retry):
#   EVM_PRIVATE_KEY=0x... node --env-file=.env.local \
#     --experimental-strip-types scripts/x402-pay.ts \
#     'https://2s.io/api/gov/carrier-safety?dot=0&name=xx&limit=1'

TypeScript / Node — @2sio/sdktypescript

import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.gov.carrierSafety({
  "dot": 0,
  "name": "xx",
  "limit": 1
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)

Python — 2siopython

import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.gov.carrier_safety(dot=0, name="xx", limit=1)

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)

MCP — Claude Desktop / AgentKit / any MCP hostjson

// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
//    EVM_PRIVATE_KEY funds x402 payments per call.

// claude_desktop_config.json
{
  "mcpServers": {
    "2sio": {
      "command": "npx",
      "args": ["-y", "@2sio/mcp"],
      "env": { "EVM_PRIVATE_KEY": "0x..." }
    }
  }
}

// 2. Once the server is running, agents call this tool via standard MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "gov.carrier-safety",
    "arguments": {
      "dot": 0,
      "name": "xx",
      "limit": 1
    }
  }
}

Response

Field	Type	Description
`mode`	string	one of: carrier \| search
`query`	object
`found`	boolean
`carrier`	object
`crashes`	object
`inspections`	object
`basics`	array
`matches`	array
`source`	object
`note`	string

Example response datajson

{
  "mode": "carrier",
  "query": {
    "dot": 1,
    "name": "example"
  },
  "found": false,
  "carrier": {
    "dotNumber": 1,
    "legalName": "example",
    "dbaName": "example",
    "physicalState": "example",
    "operation": "example",
    "allowedToOperate": false,
    "statusCode": "example",
    "safetyRating": "example",
    "safetyRatingDate": "example",
    "totalDrivers": 1,
    "totalPowerUnits": 1
  },
  "crashes": {
    "total": 1,
    "fatal": 1,
    "injury": 1,
    "towaway": 1
  },
  "inspections": {
    "driverTotal": 1,
    "driverOutOfService": 1,
    "driverOosRate": 1,
    "vehicleTotal": 1,
    "vehicleOutOfService": 1,
    "vehicleOosRate": 1
  },
  "basics": [
    {
      "category": "example",
      "measureValue": 1,
      "percentile": "example",
      "violationThreshold": 1,
      "exceededInterventionThreshold": false,
      "totalViolations": 1,
      "totalInspectionsWithViolation": 1,
      "runDate": "example"
    }
  ],
  "matches": [
    {
      "dotNumber": 1,
      "legalName": "example",
      "dbaName": "example",
      "physicalState": "example"
    }
  ],
  "source": {
    "provider": "example",
    "url": "example",
    "license": "example"
  },
  "note": "example"
}

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec (per-op x-payment-info, x402Payment security)
/.well-known/x402 — machine-readable service descriptor for x402-aware crawlers
/.well-known/mcp/server-card.json — MCP SEP-1649 server card
/llms.txt — plain-text manifest for LLM ingestion

2s.io is x402-native. Every call is paid per-request from a USDC-funded EVM wallet on Base — no signup, no API keys, no monthly fees. Source code: github.com/2s-io/sdk.