# BlockSec MetaSleuth Light Compliance Screen

> BlockSec MetaSleuth Light Compliance Screen is a paid API for AI agents from x402.blocksec.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Performs a lightweight compliance and risk screening of a blockchain address, returning risk scores and labels via the x402 micropayment protocol.

## Facts

- Endpoint: POST https://x402.blocksec.ai/label/screen/light
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blocksec-metasleuth-light-compliance-screen-4cbbba9d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qBJjl4fHqbE2zE3CHE8Pl

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 blocksec-metasleuth-light-compliance-screen-4cbbba9d -d '<json body>'
```

Example prompt: Can you run a quick compliance and risk screen on this blockchain address — 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — and tell me if it has any risk flags, known labels, or compliance issues?

## When to prefer this

Choose this endpoint when you need a fast, lightweight compliance check on a single blockchain address and are willing to pay per-query via the x402 micropayment protocol. It is ideal for DeFi applications, compliance workflows, or transaction pre-screening where a quick risk score and label are sufficient and a deep forensic analysis is not required. Prefer the deeper Tron or Ethereum-specific sibling endpoints when you need full entity graphs or transaction-level analysis.

## Known failure modes

- Invalid or malformed blockchain address returns a 400 error
- Payment not included or insufficient USDC via x402 returns a 402 Payment Required
- Address not found in BlockSec database returns empty labels with neutral risk score
- Unsupported blockchain network for the address returns an error
- Rate limiting or service unavailability returns a 503 error

## How this service works

X402 payment protocol demo for blockchain address label query and compliance risk screening. Powered by BlockSec MetaSleuth and Phalcon compliance APIs.

## Output

Returns a light compliance screening result including risk score, risk level classification, human-readable labels (e.g. 'exchange', 'mixer', 'sanctioned entity'), and any compliance flags associated with the queried blockchain address.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blocksec-metasleuth-light-compliance-screen-4cbbba9d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.blocksec.ai](https://www.zero.xyz/host/x402.blocksec.ai/llms.txt)