Before your agent onboards, pays, or contracts with a counterparty: screen the name agains

[
  {
    "scheme": "exact",
    "network": "eip155:84532",
    "payTo": "0xb3e7993Ed2FC2C79FFF220620240f298BBa9bF5B",
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "name": "Banco Nacional de Cuba"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "data": {
            "candidates": [
              {
                "entity_type": "entity",
                "list": "sdn",
                "match_confidence": 100,
                "match_reasons": [
                  "exact_normalized_name"
                ],
                "name": "BANCO NACIONAL DE CUBA",
                "programs": [
                  "CUBA"
                ],
                "uid": 306
              }
            ],
            "query": {
              "name": "Banco Nacional de Cuba"
            }
          },
          "meta": {
            "disclaimer": "This response is an assistive screening signal derived from public government data. It is not a certified compliance determination, a consumer report, or legal advice.",
            "generated_at": "2026-07-11T12:00:00.000Z",
            "service": "sanctions-screener",
            "source_datasets": [
              {
                "last_synced_at": "2026-07-11T12:00:00.000Z",
                "name": "OFAC Specially Designated Nationals (SDN) List",
                "upstream_published_at": "2026-07-10T00:00:00-04:00"
              },
              {
                "last_synced_at": "2026-07-11T12:00:00.000Z",
                "name": "OFAC Consolidated (non-SDN) List",
                "upstream_published_at": "2026-07-10T00:00:00-04:00"
              }
            ],
            "version": "0.1.0"
          }
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "country": {
                  "description": "Optional country filter (as published by OFAC).",
                  "type": "string"
                },
                "entity_type": {
                  "description": "Optional filter by OFAC entity type.",
                  "enum": [
                    "individual",
                    "entity",
                    "vessel",
                    "aircraft"
                  ],
                  "type": "string"
                },
                "min_confidence": {
                  "description": "Only return candidates at or above this confidence (0-100). Default 40.",
                  "type": "number"
                },
                "name": {
                  "description": "Name to screen (entity, vessel, aircraft, or individual).",
                  "type": "string"
                }
              },
              "required": [
                "name"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://tollbooth-sanctions-screener-testnet.sjwilliams8.workers.dev/screen"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://tollbooth-sanctions-screener-testnet.sjwilliams8.workers.dev/screen");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://tollbooth-sanctions-screener-testnet.sjwilliams8.workers.dev/screen")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header