80trust / 100

Trust Authorize

by Agent Transaction Trust in Security & trust

x402 APIPassing, checked 3 h ago

Authorize an AI-agent payment under a predelegated spending policy before funds move. Verify that the merchant's exact x402 challenge, amount, payer, payee and HTTP request are within authority already delegated to the agent. No synchronous human approval is required when the predelegated policy permits the purchase. Includes signed authorization plus post-payment on-chain settlement verification and receipt; this is not merchant reputation scoring.

POST

https://json-repair-api-9ybv.onrender.com/trust/x402/authorize

Price: $0.001; per call in USDC
Uptime: 100%; last 30 days
Response time: 206 ms; 460 ms slowest 5%
Last check: Passed; 3 h ago, next any minute now

Run a free test call How to call it

Reliability

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

How to call it

POST https://json-repair-api-9ybv.onrender.com/trust/x402/authorize

Each call costs $0.001 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://json-repair-api-9ybv.onrender.com/trust/x402/authorize
content-type: application/json

{
  "category": "ai-infrastructure",
  "merchant_id": "merchant.example",
  "payer": "0x2222222222222222222222222222222222222222",
  "payment_required": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1111111111111111111111111111111111111111",
        "scheme": "exact"
      }
    ],
    "resource": {
      "description": "Merchant paid resource",
      "mimeType": "application/json",
      "url": "https://merchant.example/api/resource"
    },
    "x402Version": 2
  },
  "policy_token": "signed-agent-policy-token",
  "request": {
    "body": {
      "task": "example"
    },
    "method": "POST",
    "url": "https://merchant.example/api/resource"
  }
}

Parameters

Parameter	Type	Required	Description
`ap2_evidence`	object	No	Optional AP2 v0.2 mandate evidence and challenge token for native verification.
`category`	string	Yes	Purchase category used by the operator policy.
`merchant_id`	string	Yes	Stable merchant identifier used by the operator policy.
`nonce`	string	No
`payer`	string	Yes	EVM address that would sign/pay the merchant transaction.
`payment_required`	object or string	Yes	The merchant's real x402 PAYMENT-REQUIRED payload, as decoded JSON or its encoded string.
`policy_token`	string	Yes	Operator-issued signed policy credential for the buying agent.
`request`	object	Yes	Exact HTTP request the agent intends to make after authorization.

Example response

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

{
  "approved": true,
  "authorization_token": "signed-short-lived-authorization",
  "challenge_hash": "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
  "payment_requirement": {
    "amount": "10000",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "network": "eip155:8453",
    "pay_to": "0x1111111111111111111111111111111111111111",
    "scheme": "exact"
  },
  "reasons": [],
  "request_digest": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://json-repair-api-9ybv.onrender.com/trust/x402/authorize' \
  -H 'content-type: application/json' \
  --data-raw '{"category":"ai-infrastructure","merchant_id":"merchant.example","payer":"0x2222222222222222222222222222222222222222","payment_required":{"accepts":[{"amount":"10000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"network":"eip155:8453","payTo":"0x1111111111111111111111111111111111111111","scheme":"exact"}],"resource":{"description":"Merchant paid resource","mimeType":"application/json","url":"https://merchant.example/api/resource"},"x402Version":2},"policy_token":"signed-agent-policy-token","request":{"body":{"task":"example"},"method":"POST","url":"https://merchant.example/api/resource"}}'

# 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://json-repair-api-9ybv.onrender.com/trust/x402/authorize' \
  -H 'content-type: application/json' \
  --data-raw '{"category":"ai-infrastructure","merchant_id":"merchant.example","payer":"0x2222222222222222222222222222222222222222","payment_required":{"accepts":[{"amount":"10000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"network":"eip155:8453","payTo":"0x1111111111111111111111111111111111111111","scheme":"exact"}],"resource":{"description":"Merchant paid resource","mimeType":"application/json","url":"https://merchant.example/api/resource"},"x402Version":2},"policy_token":"signed-agent-policy-token","request":{"body":{"task":"example"},"method":"POST","url":"https://merchant.example/api/resource"}}' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fjson-repair-api-9ybv.onrender.com%2Ftrust%2Fx402%2Fauthorize&method=POST
const res = await pay("https://json-repair-api-9ybv.onrender.com/trust/x402/authorize", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "category": "ai-infrastructure",
    "merchant_id": "merchant.example",
    "payer": "0x2222222222222222222222222222222222222222",
    "payment_required": {
      "accepts": [
        {
          "amount": "10000",
          "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "maxTimeoutSeconds": 300,
          "network": "eip155:8453",
          "payTo": "0x1111111111111111111111111111111111111111",
          "scheme": "exact"
        }
      ],
      "resource": {
        "description": "Merchant paid resource",
        "mimeType": "application/json",
        "url": "https://merchant.example/api/resource"
      },
      "x402Version": 2
    },
    "policy_token": "signed-agent-policy-token",
    "request": {
      "body": {
        "task": "example"
      },
      "method": "POST",
      "url": "https://merchant.example/api/resource"
    }
  }),
});
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://json-repair-api-9ybv.onrender.com/trust/x402/authorize",
        json={
            "category": "ai-infrastructure",
            "merchant_id": "merchant.example",
            "payer": "0x2222222222222222222222222222222222222222",
            "payment_required": {
                "accepts": [
                    {
                        "amount": "10000",
                        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                        "maxTimeoutSeconds": 300,
                        "network": "eip155:8453",
                        "payTo": "0x1111111111111111111111111111111111111111",
                        "scheme": "exact",
                    },
                ],
                "resource": {
                    "description": "Merchant paid resource",
                    "mimeType": "application/json",
                    "url": "https://merchant.example/api/resource",
                },
                "x402Version": 2,
            },
            "policy_token": "signed-agent-policy-token",
            "request": {
                "body": {
                    "task": "example",
                },
                "method": "POST",
                "url": "https://merchant.example/api/resource",
            },
        },
    )
    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

When	Result	HTTP	Time	Price
3 h ago	Passed	402	179 ms	$0.001
12 h ago	Passed	402	199 ms	$0.001
21 h ago	Passed	402	289 ms	$0.001
31 h ago	Passed	402	187 ms	$0.001
40 h ago	Passed	402	485 ms	$0.001

Show 10 older checks

2 days ago	Passed	402	266 ms	$0.001
2 days ago	Passed	402	229 ms	$0.001
3 days ago	Passed	402	169 ms	$0.001
3 days ago	Passed	402	432 ms	$0.001
3 days ago	Passed	402	196 ms	$0.001
4 days ago	Passed	402	191 ms	$0.001
4 days ago	Passed	402	185 ms	$0.001
4 days ago	Passed	402	185 ms	$0.001
4 days ago	Passed	402	242 ms	$0.001
5 days ago	Passed	402	197 ms	$0.001

Trust score 80/ 100

Availability (30-day uptime)		30 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		5 / 15
Charges what it lists		10 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.001 per call
Listed at: $0.001
Token: USDC
Networks: Base
Pays to: 0xEaC0…8Ad6

Real usage

Paying agents: 2 in 30 days
Paid calls: 5 in 30 days
Last paid call: 17 days ago

Source: x402 Bazaar settlement data.

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Trust score

[![ToolVet trust score](https://toolvet.app/badge/trust-authorize.svg)](https://toolvet.app/s/trust-authorize)