x402 Endpoint Risk Report

Name: x402 Endpoint Risk Report
Price: 0.15 USD

x402

x402 Endpoint Risk Report is a paid API for AI agents from x402-endpoint-risk-corpus.mtree.workers.dev, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Scores an x402 paid resource for payment safety, discovery completeness, replay/binding risk, and autopay suitability before an agent spends funds

Price / call$0.15

Seller volume →—

Success—

StatusUnknown

How this service works

Score an x402 paid resource for payment safety, discovery completeness, replay/binding risk, and autopay suitability before an agent spends. Returns JSON. Price 0.15 USDC on Base via x402. Demo/preview: https://x402-endpoint-risk-corpus.mtree.workers.dev/demo/risk_report. Contact: https://x402-endpoint-risk-corpus.mtree.workers.dev/contact.

Output

A JSON risk report containing scores for payment safety, discovery completeness, replay/binding risk, and autopay suitability for the queried x402 paid resource, along with supporting evidence and risk classifications.

Example use cases

Example prompt

“Before my agent pays for this x402 endpoint at https://api.example.com/v1/data, can you run a full risk report on it — covering payment safety, replay and binding risk, discovery completeness, and whether it's safe for autopay?”

Technical details

Endpoint

POSThttps://x402-endpoint-risk-corpus.mtree.workers.dev/v1/x402/risk_report

When to prefer

Use this endpoint when an AI agent needs to perform a pre-flight safety check on an x402 paid resource before authorizing any spend — especially for evaluating autopay eligibility, replay attack exposure, and payment binding completeness. Prefer this over generic API validators when the target is specifically an x402-protocol endpoint and you need structured risk scoring tied to payment safety signals.

Side effects

Invalid or unreachable endpoint URL returns error JSON
Endpoint not recognized in corpus returns low-confidence or empty scores
Payment of 0.15 USDC not received results in 402 response before report is returned
Malformed request body returns 400 validation error
Corpus data stale for given endpoint may result in outdated risk scores

Input

{
  "input": {
    "body": {
      "url": "https://api.example.com/v1/data"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "ok": true,
  "url": "https://api.example.com/v1/data",
  "risks": [
    "missing_pay_to_in_catalog",
    "missing_network_metadata",
    "zero_or_missing_price",
    "missing_agent_card",
    "missing_openapi",
    "missing_x402_discovery_alias",
    "thin_description",
    "class_check_required_authorization_binding",
    "class_check_replay_window",
    "class_check_paid_but_denied"
  ],
  "evidence": {
    "url": "https://api.example.com/v1/data",
    "source": "paid-lookup",
    "fetched": {
      "x402": false,
      "origin": "https://api.example.com",
      "openapi": false,
      "statuses": {
        "x402": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        },
        "openapi": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        },
        "agentCard": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        }
      },
      "agentCard": false
    },
    "calls_30d": 0,
    "payers_30d": 0
  },
  "risk_band": "high",
  "risk_score": 85,
  "mitigations": [
    "Publish payment requirements with stable payTo evidence.",
    "Declare accepted networks and chain IDs in x402/Bazaar metadata.",
    "Publish explicit USDC atomic amount for each paid route.",
    "Expose /.well-known/agent-card.json with route/method/payment metadata.",
    "Expose /openapi.yaml or /openapi.json for schema-grounded tool calls.",
    "Expose /.well-known/x402 or equivalent payment-requirements metadata.",
    "Add concrete endpoint purpose, inputs, outputs, and price rationale.",
    "Bind payment signatures to exact method, URL, body digest, amount, asset, chain, and payTo.",
    "Reject stale/replayed authorizations and log facilitator verification vs settlement failures separately.",
    "After settlement, return deterministic 2xx/4xx handler output rather than losing paid callers to 5xx/timeout ambiguity."
  ],
  "dataset_fresh_at": "2026-06-05T23:51:25.000Z"
}

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How this service works

Output

Technical details

Endpoint

POSThttps://x402-endpoint-risk-corpus.mtree.workers.dev/v1/x402/risk_report

When to prefer

Side effects

Invalid or unreachable endpoint URL returns error JSON
Endpoint not recognized in corpus returns low-confidence or empty scores
Payment of 0.15 USDC not received results in 402 response before report is returned
Malformed request body returns 400 validation error
Corpus data stale for given endpoint may result in outdated risk scores

Input

{
  "input": {
    "body": {
      "url": "https://api.example.com/v1/data"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "ok": true,
  "url": "https://api.example.com/v1/data",
  "risks": [
    "missing_pay_to_in_catalog",
    "missing_network_metadata",
    "zero_or_missing_price",
    "missing_agent_card",
    "missing_openapi",
    "missing_x402_discovery_alias",
    "thin_description",
    "class_check_required_authorization_binding",
    "class_check_replay_window",
    "class_check_paid_but_denied"
  ],
  "evidence": {
    "url": "https://api.example.com/v1/data",
    "source": "paid-lookup",
    "fetched": {
      "x402": false,
      "origin": "https://api.example.com",
      "openapi": false,
      "statuses": {
        "x402": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        },
        "openapi": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        },
        "agentCard": {
          "ok": false,
          "status": 530,
          "contentType": "text/plain; charset=UTF-8"
        }
      },
      "agentCard": false
    },
    "calls_30d": 0,
    "payers_30d": 0
  },
  "risk_band": "high",
  "risk_score": 85,
  "mitigations": [
    "Publish payment requirements with stable payTo evidence.",
    "Declare accepted networks and chain IDs in x402/Bazaar metadata.",
    "Publish explicit USDC atomic amount for each paid route.",
    "Expose /.well-known/agent-card.json with route/method/payment metadata.",
    "Expose /openapi.yaml or /openapi.json for schema-grounded tool calls.",
    "Expose /.well-known/x402 or equivalent payment-requirements metadata.",
    "Add concrete endpoint purpose, inputs, outputs, and price rationale.",
    "Bind payment signatures to exact method, URL, body digest, amount, asset, chain, and payTo.",
    "Reject stale/replayed authorizations and log facilitator verification vs settlement failures separately.",
    "After settlement, return deterministic 2xx/4xx handler output rather than losing paid callers to 5xx/timeout ambiguity."
  ],
  "dataset_fresh_at": "2026-06-05T23:51:25.000Z"
}