Pay-to / counterparty address screen for Base
Pay-to / counterparty address screen for Base: exact match against OFAC SDN published digital currency addresses (daily refresh, list date included), contract vs EOA, Blockscout verification, first-seen age and tx count, lookalike (address-poisoning) check vs an optional compare_to, labels, and a block/caution/ok verdict. $0.005 USDC. Screening aid only, not a compliance clearance or legal advice.
Answeringour last check, 2026-09-28
1 of 1checks answered this week
784 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.x402risk.com/v1/address-screen
| Category | Company and compliance |
|---|---|
| Provider host | api.x402risk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.005 | 784 ms |
Example input (from the provider)
{
"body": {
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"address": {
"description": "EVM address to screen (Base, chain 8453)",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"compare_to": {
"description": "Optional intended recipient address; flags a lookalike (address-poisoning) match",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"activity": {
"description": "outgoing_tx_count, tx_count_indexed, first_seen_at, first_seen_age_days",
"type": "object"
},
"address": {
"type": "string"
},
"block_number": {
"type": [
"integer",
"null"
]
},
"cached": {
"type": "boolean"
},
"chain": {
"type": "string"
},
"contract": {
"description": "verified (Blockscout), name, proxy_type, creator, creation_tx, created_at",
"type": [
"object",
"null"
]
},
"disclaimer": {
"type": "string"
},
"eip7702_delegated_eoa": {
"type": "boolean"
},
"errors": {
"type": "array"
},
"is_contract": {
"type": [
"boolean",
"null"
]
},
"labels": {
"items": {
"type": "object"
},
"type": "array"
},
"lookalike": {
"description": "compare_to, prefix_match_hex, suffix_match_hex, lookalike",
"type": [
"object",
"null"
]
},
"product": {
"type": "string"
},
"reasons": {
"items": {
"type": "string"
},
"type": "array"
},
"sanctioned": {
"description": "Exact match to an OFAC SDN published digital currency address",
"type": "boolean"
},
"sanctions": {
"description": "matches[], list, list_date, list_fetched_at, source_url",
"type": "object"
},
"schema_version": {
"type": "string"
},
"sources": {
"type": "array"
},
"status": {
"enum": [
"ok",
"partial",
"error"
],
"type": "string"
},
"verdict": {
"enum": [
"block",
"caution",
"ok"
],
"type": "string"
}
},
"required": [
"schema_version",
"address",
"status",
"verdict",
"reasons",
"sanctioned",
"disclaimer"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}