ToolVet
77trust / 100

Screen

by bridge-condition-screen.iykykblog.workers.dev in Other

x402 APIPassing, checked 4 h ago

Bridge condition and clearance verdict from the FHWA National Bridge Inventory: component condition ratings (deck/superstructure/substructure/culvert, 0-9), Good/Fair/Poor verdict, scour-critical flag, vertical/horizontal clearances, ADT, and inspection date for any US bridge by structure number, state+county, or facility/feature text. Public-domain USDOT data.

POST
https://bridge-condition-screen.iykykblog.workers.dev/screen
Price
$0.05
per call in USDC
Uptime
100%
last 30 days
Response time
518 ms
798 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://bridge-condition-screen.iykykblog.workers.dev/screen

Each call costs $0.05 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://bridge-condition-screen.iykykblog.workers.dev/screen
content-type: application/json

{
  "state": "CA",
  "structure_number": "27 0052"
}

Parameters

ParameterTypeRequiredDescription
countystringNoCounty name (e.g. 'San Francisco') or 3-digit county code. Requires state. Returns up to 25 bridges, highest ADT first.
querystringNoFree text matched against facility carried, feature crossed, and location, e.g. 'Golden Gate' or 'Mississippi River'. All words must match.
statestringNo2-letter state code, e.g. 'CA'. Narrows structure-number matches; required with county.
structure_numberstringNoNBI structure number (unique within a state), e.g. '27 0052' (Golden Gate Bridge, CA). Provide structure_number, OR state+county, OR query text.

Example response

The provider's example. We can't check it without paying.

Example response, 29 lines
{
  "bridges": [
    {
      "adt": 90932,
      "condition_ratings": {
        "culvert": null,
        "deck": 5,
        "substructure": 6,
        "superstructure": 5
      },
      "condition_verdict": "Fair",
      "county": "Marin County",
      "facility_carried": "U.S. HIGHWAY 101",
      "features_crossed": "GOLDEN GATE-SAN FRAN BAY",
      "lowest_rating": 5,
      "scour_critical": false,
      "state": "CA",
      "structure_number": "27 0052",
      "year_built": 1937
    }
  ],
  "found": true,
  "match_type": "structure_number",
  "query": {
    "state": "CA",
    "structure_number": "27 0052"
  },
  "total_matches": 1
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.05.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://bridge-condition-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"state":"CA","structure_number":"27 0052"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://bridge-condition-screen.iykykblog.workers.dev/screen' \
  -H 'content-type: application/json' \
  --data-raw '{"state":"CA","structure_number":"27 0052"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbridge-condition-screen.iykykblog.workers.dev%2Fscreen&method=POST
const res = await pay("https://bridge-condition-screen.iykykblog.workers.dev/screen", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "state": "CA",
    "structure_number": "27 0052"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://bridge-condition-screen.iykykblog.workers.dev/screen",
        json={
            "state": "CA",
            "structure_number": "27 0052",
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402381 ms$0.05
9 h agoPassed402611 ms$0.05
14 h agoPassed402355 ms$0.05
18 h agoPassed402670 ms$0.05
23 h agoPassed402611 ms$0.05
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28 h agoPassed402607 ms$0.05
32 h agoPassed402365 ms$0.05
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44 h agoPassed402469 ms$0.05
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