# Base Wallet Batch Risk Screening API

> Base Wallet Batch Risk Screening API is a paid API for AI agents from xx402.icu, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Screens up to 5 Base/EVM wallet addresses in batch for onchain risk signals, returning risk levels, high-risk flags, and manual review recommendations for a specified ERC20 token and block window.

## Facts

- Endpoint: GET https://xx402.icu/x402/api/base-wallet-batch-risk
- 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/base-wallet-batch-risk-screening-api-190c573f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YWMzm1XVfaJAfOcLHJyVB

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-batch-risk-screening-api-190c573f
```

Example prompt: Screen these 3 Base wallet addresses for onchain risk using USDC as the token and a 1000-block window: 0xAbC...111, 0xDeF...222, 0xGhI...333 — tell me which ones are high risk and which need manual review.

## When to prefer this

Use this endpoint when you need to batch-screen up to 5 Base or EVM wallet addresses for risk signals in a single call, especially before approving token transfers, counterparty interactions, or DeFi protocol actions on Base. Prefer this over single-address lookups when you have multiple wallets to assess simultaneously, and when you want structured risk tier classifications (high/medium/low) with manual review flags rather than raw transaction data.

## Known failure modes

- Invalid address format (not a valid 0x EVM address) causes schema validation error
- Exceeding limit of 5 addresses returns an error or truncated results
- Invalid token_address pattern returns a 400 error
- window_blocks outside 100–2000 range is rejected
- Payment not provided or insufficient USDC results in 402 Payment Required
- Addresses with no onchain history may return minimal risk signals
- Rate limiting or upstream data unavailability may cause partial results

## How this service works

Paid x402 buyer market scout, x402 paid resource preflight, x402 seller visibility audit, Base actionable risk feed, liquidity exit risk alerts, pool launch risk feed, stable asset risk feed, contract control event feed, protocol outflow risk feed, yield pool allocation risk feed, protocol fee quality feed, token watchlist decision packet, wallet watchlist decision packet, approval risk feed, ranked DeFi review queues with incident history, onchain risk decision packet, promoted token campaign decision packet, large transfer decision packet, token candidate screening decision radar, DEX pair anomaly decision radar, wallet safety decision packet, counterparty flow, allowance, approval exposure, DEX pair routing risk, token trade safety, token liquidity, token flow, holder concentration, contract controls, batch token screening decision packets, token diligence, and BTC15 prediction-market microstructure, execution-friction, calibration-slice, recent market tape, resolved feature sample, and threshold-pressure packets for agents and risk tools.

## Output

Returns a JSON object with a summary of findings, per-wallet risk details, counts of addresses by risk level (e.g. high/medium/low), a list of high-risk addresses, a list of addresses flagged for manual review, and the data sources used for the assessment.

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "batch_decision",
  "priority_queue",
  "best_next_products",
  "risk_breakdown",
  "wallets",
  "watchlist",
  "review_queue",
  "avoid_queue",
  "risk_level_counts",
  "bucket_counts",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-batch-risk-screening-api-190c573f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xx402.icu](https://www.zero.xyz/host/xx402.icu/llms.txt)