# Blockint Batch Address Screening

> Blockint Batch Address Screening is a paid API for AI agents from blockint.ai, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-28).

Batch screen up to 50 blockchain addresses in a single call against OFAC SDN sanctions lists and risk databases, returning action, sanctions, and risk fields per address.

## Facts

- Endpoint: POST https://blockint.ai/api/v1/check?utm_source=zero.xyz
- Price: $0.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockint-batch-address-screening-5487271a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kjxu5sDKJtMc35XmTwPoC

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 blockint-batch-address-screening-5487271a -d '<json body>'
```

Example prompt: Can you screen all 45 of these Ethereum wallet addresses at once for OFAC sanctions and risk flags? I need to know which ones are flagged before we process any payouts.

## When to prefer this

Use this endpoint when you need to screen between 40 and 50 blockchain addresses in a single operation, where the flat $0.40 fee makes it more cost-effective than individual /screen calls (which cost $0.01 each). For fewer than 40 addresses, individual screening is cheaper. Prefer this over the single /screen endpoint when processing payouts, onboarding batches, or any compliance workflow requiring bulk address validation.

## Known failure modes

- More than 50 addresses submitted — returns an error for exceeding the batch limit
- Invalid address format for unsupported network — address may be skipped or return an error
- Payment failure (insufficient USDC) — call rejected before screening
- Network timeout for large batches — partial results may not be returned
- Malformed request body — returns 400 validation error

## How this service works

Batch screen up to 50 blockchain addresses in one call for a flat $0.40 USDC (equal to $0.008 per address when you send 50). For fewer than 40 addresses, single /screen calls at $0.01 each cost less. Each result has the same action, sanctions (official OFAC SDN list only) and risk fields as /screen. Results are keyed by address; coOccurringAddresses is empty and reports are limited to 5 per address.

## Output

A map of each submitted address to its screening result, containing an action field (e.g. allow/block/review), a sanctions field indicating any OFAC SDN list matches, and a risk field with associated risk indicators. CoOccurringAddresses is empty and fraud reports are limited to 5 per address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "addresses": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Array of blockchain addresses (EVM, Bitcoin, Tron, Solana, Polkadot, XRP, Stellar, Dogecoin, Litecoin, Dash, Verge, DigiByte, Stacks, TON or Cosmos-ecosystem bech32) or WAX accounts (wax:accountname) to screen in one call (max 50)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockint-batch-address-screening-5487271a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockint.ai](https://www.zero.xyz/host/blockint.ai/llms.txt)