# WalletBureau Address Risk Scorer

> WalletBureau Address Risk Scorer is a paid API for AI agents from walletbureau.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a 0-100 counterparty risk score, verdict, and explained risk flags for a Base wallet address based on its x402/EIP-3009 payment history

## Facts

- Endpoint: GET https://walletbureau.com/v1/score/:address
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/walletbureau-address-risk-scorer-c580a8d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NBgb8i5TmjSD2N0S1F_zv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability walletbureau-address-risk-scorer-c580a8d1
```

Example prompt: Before I pay this address, can you check the WalletBureau risk score for 0x1234567890abcdef1234567890abcdef12345678 and tell me the verdict and any red flags from its payment history?

## When to prefer this

Use WalletBureau when you need to assess the trustworthiness of a Base wallet address before initiating a payment, especially in automated or agent-driven x402 payment flows where you cannot manually review the recipient. It is specifically optimized for x402/EIP-3009 payment history analysis on Base, making it the right choice over generic blockchain explorers or chain analytics tools when you want a single actionable risk score and verdict rather than raw transaction data.

## Known failure modes

- Invalid address format (not a 40-hex-char 0x address) — likely 400 error or validation rejection
- Address has no payment history — may return a neutral or unscored verdict
- Network connectivity issues — timeout or 5xx error
- Insufficient USDC payment — 402 Payment Required if x402 payment fails
- Address not on Base network — may return empty or null results

## How this service works

Counterparty risk check for a Base address: 0-100 score, verdict and explained risk flags from its full x402/EIP-3009 payment history

## Output

Returns a structured JSON object containing a numeric risk score from 0 to 100 (higher = safer or lower risk), a human-readable verdict indicating the overall risk level, and a set of explained risk flags derived from the address's full x402 and EIP-3009 payment history on the Base network.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "Base wallet address to check before paying it"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/walletbureau-address-risk-scorer-c580a8d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from walletbureau.com](https://www.zero.xyz/host/walletbureau.com/llms.txt)