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PaySafe Agent Incoming x402 Payment Scanner
x402
PaySafe Agent Incoming x402 Payment Scanner is a paid API for AI agents from paysafe-agent.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Scans an incoming x402 payment request for security risks including resource URL safety, credential demands, price anomalies, replay attacks, asset verification, merchant pinning, and counterparty reputation, returning a signed allow/flag/block verdict.
Price / call$0.01
Success—
StatusUnknown
How this service works
Payment security firewall scan for an INCOMING x402 payment request (402 offer): resource URL risk, credential-demand detection, price sanity, replay detection, canonical-USDC asset verification, merchant pinning, and counterparty reputation. Returns allow/flag/block with per-check reasons and an Ed25519-signed verdict. Advisory and non-custodial.
Output
A structured response containing an overall verdict (allow, flag, or block), per-check results with reasons for each security dimension (resource URL risk, credential-demand detection, price sanity, replay detection, canonical USDC asset verification, merchant pinning, counterparty reputation), and an Ed25519-signed verdict for tamper-evident auditability.
Example use cases
Example prompt
“Before I pay this x402 request, run a security firewall scan on it — the resource URL is https://api.example.com/data, the amount is 1000000 USDC atomic units on base-mainnet, pay_to is 0xABC123, I expected it to cost about $1.00, and this came from fetched_content at that same URL. Flag any replay, price sanity issues, or credential-demand tricks and give me a signed verdict.”
Technical details
Endpoint
POSThttps://paysafe-agent.com/v1/scan/incomingWhen to prefer
Use this endpoint when your agent has received an incoming x402 402-response payment offer and needs to perform pre-payment security screening before committing funds. Prefer this over the outgoing scan endpoint (which screens your own outgoing payment for PII/secret leaks) or the reputation lookup endpoint (which is post-hoc). This endpoint is the right choice when you want a comprehensive, multi-dimensional security verdict with a cryptographically signed result before accepting any x402 payment request from an external resource.
Side effects
- Missing or malformed payment object returns 400 with validation error
- Unknown asset type or network causes asset-verification check to fail with unsupported_asset error
- Velocity limit exceeded for agent_id returns 429 rate-limit response
- Nonce store unavailable causes replay detection to be skipped with degraded verdict
- Counterparty reputation service timeout causes reputation check to be marked inconclusive
- Invalid expected_price_usd format causes price sanity check to error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| policy | object | Tiering overrides: force_deep / skip_deep for the deep content-analysis tier |
| context | object | Provenance: origin (planning|user_instruction|tool_result|fetched_content|unknown), content (the content the agent just read), content_source_url |
| payment | object | The x402 payment (or payment request) to screen: scheme, network, amount (atomic) or amount_usd, asset, pay_to, payer, resource_url, description, reason, nonce, metadata |
| agent_id | string | Identifier of the scanning agent (scopes velocity limits) |
| expected_price_usd | number | What the agent expected this to cost (USD) |
Output
Schema · Response
{
"type": "json",
"example": {
"checks": [
{
"id": "replay.nonce_reuse",
"reason": "Nonce reuse detected: first seen 2026-07-14T09:00:00Z …",
"verdict": "block",
"severity": "critical"
}
],
"scan_id": "6f9c9d5e-…",
"verdict": "block",
"advisory": "Recommended action: DO NOT settle this payment. …",
"direction": "incoming",
"risk_score": 95,
"scanned_at": "2026-07-14T09:01:00Z",
"attestation": {
"alg": "ed25519",
"message": "6f9c9d5e-…|outgoing|block|95|2026-07-14T09:01:00Z",
"signature_hex": "…"
}
}
}Tags
x402
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