Utilities · x402 · early usage

Direct wallet sanctions exposure check on Base

Direct wallet sanctions exposure check on Base. Screens a wallet and a bounded set of recent transfer counterparties, with evidence, coverage, and explicit limitations.

by wallet-sanctions.use.x402atlas.com · discovered, not yet claimed by its owner · updated 2026-10-01

30d calls2

30d payers1

MethodGET

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

Direct wallet sanctions exposure check on Base. Screens a wallet and a bounded set of recent transfer counterparties, with evidence, coverage, and explicit limitations.

Tags: sanctions · compliance · wallet · exposure · counterparty · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-01

Input example from Bazaar metadata

{
  "address": "0xD58397875AA3e57f11EE5eDcC4Cda2BCb545D4f7",
  "network": "eip155:8453"
}

Output example

{
  "address": "0xD58397875AA3e57f11EE5eDcC4Cda2BCb545D4f7",
  "cached": true,
  "checked_at": "2026-07-22T12:00:01Z",
  "coverage": {
    "counterparties_discovered": 14,
    "counterparties_failed": 0,
    "counterparties_not_screened": 0,
    "counterparties_screened": 14,
    "counterparty_limit": 20,
    "from": "2025-07-22T12:00:00Z",
    "lookback_days": 365,
    "provider_complete": true,
    "to": "2026-07-22T12:00:00Z",
    "transfer_limit": 100,
    "transfers_examined": 41,
    "truncated": false
  },
  "limitations": [
    "One-hop direct native and fungible-token transfer analysis only; transfers without two address endpoints (such as contract creation), contract internals, NFTs, wallet clustering, source of funds, identity, and overall AML risk are not assessed.",
    "Interaction with a listed address does not establish ownership, control, or illicit activity; direction, frequency, value, and transaction evidence require contextual review.",
    "A negative result applies only to the reported network, time window, transfer limit, and screened counterparties and must not be interpreted as AML clearance."
  ],
  "matches": [],
  "network": "eip155:8453",
  "recommended_action": "no_direct_match",
  "source": {
    "check_type": "direct_address_sanctions_exposure",
    "lists": [
      "US OFAC",
      "UK OFSI",
      "South Korea MOFA",
      "Israel NBCTF"
    ]
  },
  "summary": "No exact target or direct-counterparty sanctions match was found within the reported analysis limits. This is not AML clearance.",
  "target": {
    "cached": true,
    "checked_at": "2026-07-22T12:00:00Z",
    "is_sanctioned": false,
    "match": null,
    "verdict": "not_listed"
  },
  "verdict": "no_direct_exposure_found"
}

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/27429.json for the price and payment options.
Pay. Call GET https://wallet-sanctions.use.x402atlas.com/exposure. 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, Polygon, Arbitrum One, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.1 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Polygon, Arbitrum One, Solana
Demand: 2 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	$0.1	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Polygon eip155:137	USDC	$0.1	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Arbitrum One eip155:42161	USDC	$0.1	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.1	ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "address": {
          "description": "Validated canonical EIP-55 address of the analyzed wallet.",
          "type": "string"
        },
        "cached": {
          "description": "True when the whole analysis was served from cache, including the pinned documentation example.",
          "type": "boolean"
        },
        "checked_at": {
          "description": "When this analysis was assembled; retained on cache hits.",
          "format": "date-time",
          "type": "string"
        },
        "coverage": {
          "description": "Exactly what this analysis did. `counterparties_discovered` = `counterparties_screened` + `counterparties_failed` + `counterparties_not_screened`.",
          "properties": {
            "counterparties_discovered": {
              "description": "Unique counterparties found in the examined transfers.",
              "type": "integer"
            },
            "counterparties_failed": {
              "description": "Counterparties whose screen was attempted but errored upstream. They are NOT clean — they are unknown.",
              "type": "integer"
            },
            "counterparties_not_screened": {
              "description": "Discovered counterparties dropped by `counterparty_limit` and never sent upstream. Also unknown, not clean.",
              "type": "integer"
            },
            "counterparties_screened": {
              "description": "Counterparties whose sanctions screen completed successfully; only these carry a real result.",
              "type": "integer"
            },
            "counterparty_limit": {
              "description": "Maximum unique counterparties this route screens per request.",
              "type": "integer"
            },
            "from": {
              "description": "Oldest transfer timestamp the scan considered.",
              "format": "date-time",
              "type": "string"
            },
            "lookback_days": {
              "description": "Configured history window in days.",
              "type": "integer"
            },
            "provider_complete": {
              "description": "False when any screen failed or an upstream transfer row was unusable. A negative verdict with `false` here is partial, not clean.",
              "type": "boolean"
            },
            "to": {
              "description": "Newest transfer timestamp the scan considered.",
              "format": "date-time",
              "type": "string"
            },
            "transfer_limit": {
              "description": "Maximum transfers the scan reads before stopping.",
              "type": "integer"
            },
            "transfers_examined": {
              "description": "Transfers actually read for this wallet.",
              "type": "integer"
            },
            "truncated": {
              "description": "True when a transfer or counterparty limit was hit, so the wallet has more history than was assessed.",
              "type": "boolean"
            }
          },
          "required": [
            "from",
            "to",
            "lookback_days",
            "transfer_limit",
            "transfers_examined",
            "counterparty_limit",
            "counterparties_discovered",
            "counterparties_screened",
            "counterparties_failed",
            "counterparties_not_screened",
            "truncated",
            "provider_complete"
          ],
          "type": "object"
        },
        "limitations": {
          "description": "Scope caveats that constrain how this result may be used.",
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "matches": {
          "description": "One entry per successfully screened counterparty that is an exact sanctions-list match; empty when none matched. An entry describes the counterparty, not the requested wallet.",
          "items": {
            "description": "A sanctioned counterparty plus the interaction evidence. The `examples` entry is an illustrative shape only: its address, hash, names, and dates are placeholders, not a real designation.",
            "examples": [
              {
                "address": "0x000000000000000000000000000000000000dEaD",
                "asset": "USDC",
                "direction": "sent_to",
                "interaction_count": 3,
                "latest_interaction": "2026-07-19T08:31:22Z",
                "sanctions": {
                  "listed_blockchain": "Ethereum",
                  "name": "Placeholder Designated Entity",
                  "sanctioned_at": "2025-11-04T00:00:00Z"
                },
                "transaction_hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
                "value": 5000
              }
            ],
            "properties": {
              "address": {
                "description": "Canonical EIP-55 address of the sanctioned counterparty.",
                "type": "string"
              },
              "asset": {
                "description": "Asset symbol of the most recent transfer (for example ETH or USDC); omitted when upstream reports none.",
                "type": "string"
              },
              "direction": {
                "description": "Flow direction relative to the requested wallet across the examined transfers.",
                "enum": [
                  "sent_to",
                  "received_from",
                  "bidirectional"
                ],
                "type": "string"
              },
              "interaction_count": {
                "description": "Number of examined transfers between the wallet and this counterparty.",
                "type": "integer"
              },
              "latest_interaction": {
                "description": "Block timestamp of the most recent such transfer.",
                "format": "date-time",
                "type": "string"
              },
              "sanctions": {
                "description": "Designation evidence for this counterparty.",
                "properties": {
                  "listed_blockchain": {
                    "description": "Chain the address was designated on, which may differ from the analyzed network.",
                    "type": "string"
                  },
                  "name": {
                    "description": "Designated entity name as published by the source list.",
                    "type": "string"
                  },
                  "sanctioned_at": {
                    "description": "Designation date reported by the source list.",
                    "format": "date-time",
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "transaction_hash": {
                "description": "Hash of the most recent such transfer, for on-chain verification.",
                "type": "string"
              },
              "value": {
                "description": "Decimal-adjusted amount of the most recent transfer denominated in `asset` — token units, NOT USD. Compare thresholds per asset.",
                "type": "number"
              }
            },
            "required": [
              "address",
              "direction",
              "interaction_count",
              "latest_interaction",
              "transaction_hash",
              "sanctions"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "network": {
          "description": "CAIP-2 network the analysis covers.",
          "enum": [
            "eip155:8453"
          ],
          "type": "string"
        },
        "recommended_action": {
          "description": "Suggested handling. `manual_review` is returned both for a counterparty match and for a negative result whose coverage is incomplete; `no_direct_match` only for a negative result with complete coverage.",
          "enum": [
            "block_and_review",
            "manual_review",
            "no_direct_match"
          ],
          "type": "string"
        },
        "source": {
          "description": "What was checked and against which published lists.",
          "properties": {
            "check_type": {
              "enum": [
                "direct_address_sanctions_exposure"
              ],
              "type": "string"
            },
            "lists": {
              "description": "Sanctions lists covered by the screening provider.",
              "items": {
                "type": "string"
              },
              "type": "array"
            }
          },
          "required": [
            "check_type",
            "lists"
          ],
          "type": "object"
        },
        "summary": {
          "description": "Human-readable interpretation, including the coverage and AML-scope caveats.",
          "type": "string"
        },
        "target": {
          "description": "Exact-address screen of the requested wallet itself, independent of counterparty exposure.",
          "properties": {
            "cached": {
              "description": "True when the target screen was served from cache.",
              "type": "boolean"
            },
            "checked_at": {
              "description": "When the target screen was obtained upstream; retained on cache hits.",
              "format": "date-time",
              "type": "string"
            },
            "is_sanctioned": {
              "description": "True only for an exact match of the requested wallet.",
              "type": "boolean"
            },
            "match": {
              "description": "Designation evidence for a positive target match; null when the target is not listed.",
              "properties": {
                "listed_blockchain": {
                  "description": "Chain the address was designated on, which may differ from the analyzed network.",
                  "type": "string"
                },
                "name": {
                  "description": "Designated entity name as published by the source list.",
                  "type": "string"
                },
                "sanctioned_at": {
                  "description": "Designation date reported by the source list.",
                  "format": "date-time",
                  "type": "string"
                }
              },
              "type": [
                "object",
                "null"
              ]
            },
            "verdict": {
              "description": "`not_listed` means no exact match was found, not AML clearance.",
              "enum": [
                "sanctioned",
                "not_listed"
              ],
              "type": "string"
            }
          },
          "required": [
            "verdict",
            "is_sanctioned",
            "match",
            "checked_at",
            "cached"
          ],
          "type": "object"
        },
        "verdict": {
          "description": "`target_sanctioned`: the requested wallet itself is an exact list match. `direct_exposure_detected`: the wallet is not listed but at least one screened counterparty is. `no_direct_exposure_found`: neither matched — read `coverage` before treating it as clean, because it is bounded by the reported limits and may be partial.",
          "enum": [
            "target_sanctioned",
            "direct_exposure_detected",
            "no_direct_exposure_found"
          ],
          "type": "string"
        }
      },
      "required": [
        "address",
        "network",
        "verdict",
        "recommended_action",
        "summary",
        "target",
        "coverage",
        "matches",
        "checked_at",
        "cached",
        "source",
        "limitations"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "address": "string",
    "cached": true,
    "checked_at": "2026-01-01T00:00:00Z",
    "coverage": {
      "counterparties_discovered": 0,
      "counterparties_failed": 0,
      "counterparties_not_screened": 0,
      "counterparties_screened": 0,
      "counterparty_limit": 0,
      "from": "2026-01-01T00:00:00Z",
      "lookback_days": 0,
      "provider_complete": true,
      "to": "2026-01-01T00:00:00Z",
      "transfer_limit": 0,
      "transfers_examined": 0,
      "truncated": true
    },
    "limitations": [
      "string"
    ],
    "matches": [
      {
        "address": "0x000000000000000000000000000000000000dEaD",
        "asset": "USDC",
        "direction": "sent_to",
        "interaction_count": 3,
        "latest_interaction": "2026-07-19T08:31:22Z",
        "sanctions": {
          "listed_blockchain": "Ethereum",
          "name": "Placeholder Designated Entity",
          "sanctioned_at": "2025-11-04T00:00:00Z"
        },
        "transaction_hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "value": 5000
      }
    ],
    "network": "eip155:8453",
    "recommended_action": "block_and_review",
    "source": {
      "check_type": "direct_address_sanctions_exposure",
      "lists": [
        "string"
      ]
    },
    "summary": "string",
    "target": {
      "cached": true,
      "checked_at": "2026-01-01T00:00:00Z",
      "is_sanctioned": true,
      "match": {
        "listed_blockchain": "string",
        "name": "string",
        "sanctioned_at": "2026-01-01T00:00:00Z"
      },
      "verdict": "sanctioned"
    },
    "verdict": "target_sanctioned"
  },
  "type": "string"
}

Examples

curl

curl "https://wallet-sanctions.use.x402atlas.com/exposure"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://wallet-sanctions.use.x402atlas.com/exposure");
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
res = httpx.get("https://wallet-sanctions.use.x402atlas.com/exposure")
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: wallet-sanctions.use.x402atlas.com
Endpoint: https://wallet-sanctions.use.x402atlas.com/exposure
Machine-readable: /resources/27429.json