gov.osha-violations

Search OSHA citation / violation records via US Department of Labor Open Data Portal (~13.2M citations). Each citation links to an inspection via `activityNr` — pair with /api/gov/osha-inspections to follow site → inspection → violations. Filter by activityNr, citationId, standard (29 CFR section, e.g. "19100132" for PPE general requirements), issuance date range, initial-penalty min/max, emphasis program code.

price

$0.0012 USDC per call

method

GET/api/gov/osha-violations

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
`activityNr`	integer	min 1
`citationId`	string	min 1 chars · max 40 chars
`standard`	string	min 2 chars · max 40 chars
`issuanceDateMin`	string	match ^\d{4}-\d{2}-\d{2}$
`issuanceDateMax`	string	match ^\d{4}-\d{2}-\d{2}$
`initialPenalty`	object
`emphasis`	string	min 1 chars · max 40 chars
`fields`	string	min 1 chars · max 400 chars
`sort`	string	min 1 chars · max 120 chars
`limit`	integer	min 1 · max 100
`offset`	integer	min 0

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/gov/osha-violations?activityNr=1&citationId=example&standard=xx&issuanceDateMin=2024-01-01&issuanceDateMax=2024-01-01&initialPenalty=%7B%22min%22%3A0%2C%22max%22%3A0%7D&emphasis=example&fields=example&sort=example&limit=25&offset=0'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/gov/osha-violations?activityNr=1&citationId=example&standard=xx&issuanceDateMin=2024-01-01&issuanceDateMax=2024-01-01&initialPenalty=%7B%22min%22%3A0%2C%22max%22%3A0%7D&emphasis=example&fields=example&sort=example&limit=25&offset=0' \
  -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/osha-violations?activityNr=1&citationId=example&standard=xx&issuanceDateMin=2024-01-01&issuanceDateMax=2024-01-01&initialPenalty=%7B%22min%22%3A0%2C%22max%22%3A0%7D&emphasis=example&fields=example&sort=example&limit=25&offset=0'

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.oshaViolations({
  "activityNr": 1,
  "citationId": "example",
  "standard": "xx",
  "issuanceDateMin": "2024-01-01",
  "issuanceDateMax": "2024-01-01",
  "initialPenalty": {
    "min": 0,
    "max": 0
  },
  "emphasis": "example",
  "fields": "example",
  "sort": "example",
  "limit": 25,
  "offset": 0
})

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.osha_violations(activityNr=1, citationId="example", standard="xx", issuanceDateMin="2024-01-01", issuanceDateMax="2024-01-01", initialPenalty={"min":0,"max":0}, emphasis="example", fields="example", sort="example", limit=25, offset=0)

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.osha-violations",
    "arguments": {
      "activityNr": 1,
      "citationId": "example",
      "standard": "xx",
      "issuanceDateMin": "2024-01-01",
      "issuanceDateMax": "2024-01-01",
      "initialPenalty": {
        "min": 0,
        "max": 0
      },
      "emphasis": "example",
      "fields": "example",
      "sort": "example",
      "limit": 25,
      "offset": 0
    }
  }
}

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.