# WalletBureau Risk Score for Base Address

> WalletBureau Risk Score for Base Address is a paid API for AI agents from walletbureau.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-08).

Returns a 0-100 risk score, a verdict, and explained risk flags for any Base blockchain address based on its x402 payment history

## Facts

- Endpoint: GET https://walletbureau.com/v1/score/%7Baddress%7D?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-08
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/walletbureau-risk-score-for-base-address-2d2a36d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zCW-g9LvrA6ju23MDTvrn

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-risk-score-for-base-address-2d2a36d8
```

Example prompt: Before you send that x402 payment, can you run a WalletBureau risk check on 0xAbC123...def to see its score, verdict, and any red flags from its payment history?

## When to prefer this

Choose this endpoint when your agent needs to assess counterparty risk for a Base network address specifically within the x402 payment ecosystem — particularly before executing automated micropayments or whitelisting a new payee. It is purpose-built for x402 payment history analysis on Base and provides richer, more contextual signals than generic blockchain analytics tools for this use case.

## Known failure modes

- Invalid or malformed address format returns an error response
- Address with no x402 payment history may return minimal stats or a neutral score
- Stale cache data indicated by high cache_age_seconds in the meta field
- Service unavailable if walletbureau.com is down or rate-limited
- Payment failure for the $0.01 USDC x402 fee results in 402 response and no score returned

## How this service works

Check who your agent is about to pay. A 0-100 score, a verdict and explained risk flags for any Base address, from its full x402 payment history. $0.01 per check, no signup.

## Output

A JSON object containing a 0-100 numeric risk score, a human-readable verdict (e.g. 'ok'), an array of explained risk flags (each with a code, severity, and reason), aggregate transaction statistics (total inbound tx count, distinct payer count, first-seen date), the queried address, and API metadata including version and cache age in seconds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "meta": {
   "api_version": "v1",
   "cache_age_seconds": 312
  },
  "flags": [
   {
    "code": "activity_spike",
    "reason": "Volume over the last 24 h is 12x the median of the last 30 days",
    "severity": "low"
   }
  ],
  "score": 74,
  "stats": {
   "tx_in": 1204,
   "first_seen": "2025-11-02T00:00:00Z",
   "distinct_payers": 311
  },
  "address": "0x…",
  "verdict": "ok"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/walletbureau-risk-score-for-base-address-2d2a36d8/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)