ToolVet
73trust / 100

Provenance

by Toll402 in AI models & inference

x402 APIPassing, checked 35 min ago

Human or synthetic? Provenance evidence for a URL: archive first-capture date, domain age, authorship markup, curated source tier, AI disclosures and stylometric signals, aggregated into a calibrated 0-100 human-origin score with every piece of evidence. Add deep=true for an LLM stylometric assessment.

POST https://toll402.dev/v1/provenance

Last 30 days

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Status and outage history · Atom feed

Uptime
94.7%
Response time
310 ms typical, 417 ms slowest 5%
Last check
35 min ago
Next check
any minute now

How to call it

POST https://toll402.dev/v1/provenance

Each call costs $0.01 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://toll402.dev/v1/provenance
content-type: application/json

{
  "deep": false,
  "url": "https://en.wikipedia.org/wiki/Turing_test"
}

Parameters

ParameterTypeRequiredDescription
deepbooleanNoAlso run an LLM stylometric assessment (only when the server has an LLM key) Default: true.
urlstring (uri)YesPublic URL to assess

Example response

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

{
  "confidence": 0.9,
  "evidence": [
    {
      "direction": "human",
      "signal": "wayback_first_capture",
      "value": "2003-05-12T00:00:00Z"
    }
  ],
  "firstArchived": "2003-05-12T00:00:00Z",
  "humanOriginScore": 82,
  "source": {
    "tier": 1
  },
  "verdict": "likely_human"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://toll402.dev/v1/provenance' \
  -H 'content-type: application/json' \
  --data-raw '{"deep":false,"url":"https://en.wikipedia.org/wiki/Turing_test"}'

# 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://toll402.dev/v1/provenance' \
  -H 'content-type: application/json' \
  --data-raw '{"deep":false,"url":"https://en.wikipedia.org/wiki/Turing_test"}' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftoll402.dev%2Fv1%2Fprovenance&method=POST
const res = await pay("https://toll402.dev/v1/provenance", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "deep": false,
    "url": "https://en.wikipedia.org/wiki/Turing_test"
  }),
});
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://toll402.dev/v1/provenance",
        json={
            "deep": False,
            "url": "https://en.wikipedia.org/wiki/Turing_test",
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
35 min agoPassed402241 ms$0.01
4 h agoPassed402312 ms$0.01
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