# Base Wallet Trust Verdict

> Base Wallet Trust Verdict is a paid API for AI agents from stall-row-production.up.railway.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Returns a SAFE/CAUTION/AVOID verdict with a 0-100 score for a Base wallet address, combining OFAC SDN screening, wallet age, activity level, and address-poisoning detection.

## Facts

- Endpoint: POST https://stall-row-production.up.railway.app/v1/wallet-verdict?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-wallet-trust-verdict-b18a53a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z_ql7SYBgYbjSvPMS1fAt

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 base-wallet-trust-verdict-b18a53a2 -d '<json body>'
```

Example prompt: Before I send payment to 0x1234...abcd, can you run a trust check on that Base wallet — I want to know if it's SAFE, flagged for sanctions, or showing any address-poisoning patterns?

## When to prefer this

Use this endpoint when an agent needs a quick, multi-factor trust decision about a Base wallet before sending funds or acting on instructions from it. It combines OFAC compliance, on-chain behavioral signals, and address-poisoning detection in a single call, making it ideal for pre-payment screening or agent-to-agent trust verification on Base without building a multi-step compliance pipeline.

## Known failure modes

- Invalid or malformed wallet address returns a 400 error
- Address not found on Base returns low-activity or insufficient-data verdict
- OFAC snapshot may be dated, missing very recent designations
- Address-poisoning scan limited to recent token transfers only, older attacks may be missed
- Service unavailability on Railway returns 5xx

## How this service works

A trust verdict for one Base wallet: OFAC SDN exact-match against a dated snapshot, wallet age, activity level, and an address-poisoning scan of its recent token transfers, combined into SAFE, CAUTION, or AVOID with a 0-100 score and itemized reasons. Use this when an agent must decide whether a wallet is safe to pay or take instructions from.

## Output

A JSON object containing a verdict label (SAFE, CAUTION, or AVOID), a numeric trust score from 0 to 100, OFAC SDN exact-match result against a dated snapshot, wallet age, activity level, address-poisoning scan results from recent token transfers, and a list of itemized reasons explaining the verdict.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-trust-verdict-b18a53a2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stall-row-production.up.railway.app](https://www.zero.xyz/host/stall-row-production.up.railway.app/llms.txt)