Sanctions screening your agent can pay for itself.

Three ways to use it

Paid API

Prefer direct paid API access? The same screening core is available as a machine-payable x402 API at $0.02 USDC per call on Base — no accounts, API keys, or subscriptions required.

Endpoint

POST https://api-1-screening.agent-tollbooth.workers.dev/screen
Content-Type: application/json

{ "name": "Jane Doe" }

Optional fields: entity_type (individual | entity | vessel | aircraft), dob (YYYY-MM-DD), nationality (ISO country code).

How payment works

• Unpaid requests get HTTP 402 with machine-readable payment requirements (exact amount, asset, network, payout address).
• Your agent pays 0.02 USDC on Base via the exact (EIP-3009) scheme, then retries with the payment proof.
• Paid requests get HTTP 200 with matches, provenance, and the attestation seal.
• Validation runs before payment: invalid queries are rejected with HTTP 400 and never billed.

Response

{
  "matches": [
    { "list": "ofac-sdn", "matched_name": "…",
      "confidence": 0.87, "record_id": "…",
      "name_similarity": 0.92,
      "dob_match": true, "nationality_match": null }
  ],
  "dataset": { "version": "…", "engine_version": "1.1.0",
               "lists": [{ "list": "ofac-sdn", "sha256": "…", … }] },
  "disclaimer": "Informational screening signal only — …",
  "timestamp": "2026-09-30T12:00:00.000Z",
  "signature": { "domain": { "name": "ScreenSeal", … },
                 "message": { "queryHash": "0x…", "responseHash": "0x…", … },
                 "signature": "0x…" }
}

Machine-readable contract: openapi.json (OpenAPI 3.1, x402scan-compatible).

Data sources

Every screening runs against these lists, refreshed regularly:

• OFAC SDN — U.S. Treasury Specially Designated Nationals
• OFAC Consolidated Non-SDN — U.S. Treasury consolidated non-SDN lists
• EU FSF — EU Financial Sanctions Database

Each response names the exact dataset version and carries per-list provenance (source URL, SHA-256, download time), so you can verify precisely what was screened.

Attestation seal

Every paid response includes an EIP-712 attestation signed by the service key. It binds the exact query (by hash — your raw input never enters the seal) to the exact response (by hash), the dataset version, and a timestamp. Recover the signer address, recompute the hashes, and you can prove the result came from ScreenSeal untampered.

The seal attests to provenance — that this response is genuinely ours — not to legal truth. A match is a signal to investigate, never a verdict.

Privacy

• We never log names, dates of birth, nationalities, request bodies, or match results.
• Error messages never echo your input.
• Rate limits are enforced per IP with salted hashes — raw IPs are never stored.

Agent Tollbooth

ScreenSeal is API #1 from Agent Tollbooth — small, single-purpose utility APIs that AI agents pay per call. No accounts, no subscriptions, no seats. One endpoint, one price, one job done well.

More tollbooth APIs are on the way. This page is their future front door.