x402 v2 paid EVM token contract risk API on Base and BSC
x402 v2 paid EVM token contract risk API on Base and BSC. For 0.01 USDC, returns EIP-1967 proxy detection, owner control and renouncement status, and block-explorer source-code verification. Built for AI agents, bots, and automated token screening.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
740 msmedian answer time
$0.01listed price per call
$0.01price 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
GET https://node-starter--maxujon18.replit.app/api/check-contract
| Category | Code and developer |
|---|---|
| Provider host | node-starter--maxujon18.replit.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.01 | 740 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "base"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"address": {
"description": "EVM contract address to check (0x...)",
"type": "string"
},
"chain": {
"description": "Chain to check the contract on",
"enum": [
"base",
"bsc"
],
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"action": {
"type": "string"
},
"address": {
"type": "string"
},
"chain": {
"type": "string"
},
"checkedAt": {
"type": "string"
},
"checks": {
"properties": {
"owner": {
"properties": {
"address": {
"type": [
"string",
"null"
]
},
"functionDetected": {
"type": "boolean"
},
"renounced": {
"type": "boolean"
}
},
"type": "object"
},
"proxy": {
"properties": {
"detected": {
"type": "boolean"
},
"implementation": {
"type": [
"string",
"null"
]
},
"kind": {
"enum": [
"eip1967-implementation",
"eip1967-beacon",
null
],
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"source": {
"properties": {
"reason": {
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"verified",
"not_verified",
"unavailable"
],
"type": "string"
}
},
"type": "object"
}
},
"type": "object"
},
"limitations": {
"items": {
"type": "string"
},
"type": "array"
},
"riskLevel": {
"enum": [
"low",
"medium",
"high"
],
"type": "string"
},
"score": {
"type": "number"
},
"signals": {
"items": {
"type": "string"
},
"type": "array"
},
"summary": {
"type": "string"
}
},
"required": [
"address",
"chain",
"riskLevel",
"score",
"action",
"summary",
"signals",
"checks",
"limitations",
"checkedAt"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}