Payments · x402 · early usage

Payment security firewall scan for an OUTGOING x402 payment: PII/secret leak detection…

by paysafe-agent.com · discovered, not yet claimed by its owner · updated 2026-10-13

30d calls1

30d payers1

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Payment security firewall scan for an OUTGOING x402 payment: PII/secret leak detection in payment metadata, nonce replay detection, overpayment detection, prompt-injection-triggered payment analysis (fast + deep tiers), canonical-USDC asset verification, merchant pinning, velocity/spend caps, and counterparty reputation cross-check. Returns allow/flag/block with per-check reasons and an Ed25519-signed verdict. Advisory and non-custodial.

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-13

Input example from Bazaar metadata

{
  "context": {
    "origin": "planning"
  },
  "expected_price_usd": 0.05,
  "payment": {
    "amount": "50000",
    "asset_decimals": 6,
    "description": "Premium data access",
    "network": "eip155:8453",
    "nonce": "0x1a2b3c",
    "pay_to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
    "resource_url": "https://api.example.com/premium",
    "scheme": "exact"
  }
}

Output example

{
  "advisory": "Recommended action: DO NOT settle this payment. …",
  "attestation": {
    "alg": "ed25519",
    "message": "6f9c9d5e-…|outgoing|block|95|2026-07-14T09:01:00Z",
    "signature_hex": "…"
  },
  "checks": [
    {
      "id": "replay.nonce_reuse",
      "reason": "Nonce reuse detected: first seen 2026-07-14T09:00:00Z …",
      "severity": "critical",
      "verdict": "block"
    }
  ],
  "direction": "outgoing",
  "risk_score": 95,
  "scan_id": "6f9c9d5e-…",
  "scanned_at": "2026-07-14T09:01:00Z",
  "verdict": "block"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/53522.json for the price and payment options.
Pay. Call GET https://paysafe-agent.com/v1/scan/outgoing. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0x3C423B365efB79bFB42C9eC8f6F0745195ca7745	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x3C423B365efB79bFB42C9eC8f6F0745195ca7745",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {},
  "type": "string"
}

Examples

curl

curl -X POST 'https://paysafe-agent.com/v1/scan/outgoing' -H 'Content-Type: application/json' --data '{"context":{"origin":"planning"},"expected_price_usd":0.05,"payment":{"amount":"50000","asset_decimals":6,"description":"Premium data access","network":"eip155:8453","nonce":"0x1a2b3c","pay_to":"0x209693Bc6afc0C5328bA36FaF03C514EF312287C","resource_url":"https://api.example.com/premium","scheme":"exact"}}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://paysafe-agent.com/v1/scan/outgoing", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"context\":{\"origin\":\"planning\"},\"expected_price_usd\":0.05,\"payment\":{\"amount\":\"50000\",\"asset_decimals\":6,\"description\":\"Premium data access\",\"network\":\"eip155:8453\",\"nonce\":\"0x1a2b3c\",\"pay_to\":\"0x209693Bc6afc0C5328bA36FaF03C514EF312287C\",\"resource_url\":\"https://api.example.com/premium\",\"scheme\":\"exact\"}}"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
import json
res = httpx.request("POST", "https://paysafe-agent.com/v1/scan/outgoing", json=json.loads("{\"context\":{\"origin\":\"planning\"},\"expected_price_usd\":0.05,\"payment\":{\"amount\":\"50000\",\"asset_decimals\":6,\"description\":\"Premium data access\",\"network\":\"eip155:8453\",\"nonce\":\"0x1a2b3c\",\"pay_to\":\"0x209693Bc6afc0C5328bA36FaF03C514EF312287C\",\"resource_url\":\"https://api.example.com/premium\",\"scheme\":\"exact\"}}"))
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: paysafe-agent.com
Endpoint: https://paysafe-agent.com/v1/scan/outgoing
Machine-readable: /resources/53522.json