---
name: lionx402.com
description: lionx402.com provides OFAC SDN wallet screening for EVM addresses, returning a PASS/WARN/BLOCK verdict, numeric risk score, and a cryptographically signed Ed25519 attestation per query. It is a single-purpose compliance microservice priced at $0.001 USDC per check on Base.
host: lionx402.com
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# lionx402.com

lionx402.com is a narrow compliance utility targeting agents and applications that need lightweight, on-demand OFAC sanctions screening before executing transactions or onboarding counterparties. It serves DeFi protocols, payment flows, and compliance pipelines operating on EVM-compatible chains. Its distinguishing characteristic is the Ed25519-signed attestation output, which provides a verifiable, portable compliance record per address checked.

## When to use this host

Use this host when an agent needs a fast, cheap ($0.001 USDC) OFAC SDN check on a single EVM address with a cryptographically verifiable attestation — for example, before sending funds, settling a trade, or onboarding a new counterparty on Base. Do not use it for full counterparty due-diligence that includes domain trust, firmographics, or token risk analysis; the host's own compliance-bundle endpoint ($0.05) is the indicated alternative for that scope. Do not use it for non-EVM address formats (e.g., Bitcoin, Solana, Cosmos bech32) — no skill exists here to handle those. If you need broader AML data, transaction graph analysis, or multi-chain coverage, look to dedicated blockchain analytics providers rather than this host.

## Capabilities

### OFAC Sanctions Screening

Checks a single EVM wallet address against the US Treasury OFAC SDN list and returns a structured verdict (PASS/WARN/BLOCK), a numeric risk score, and a signed attestation suitable for audit or downstream gating logic.

- **`screen-wallet-ofac-sdn`** — Screens an EVM wallet address against the US Treasury OFAC SDN list and returns a PASS/WARN/BLOCK verdict, numeric risk score, and Ed25519-signed attestation for $0.001 USDC on Base.

## Skill reference

### `screen-wallet-ofac-sdn`

**LION Wallet Screen** — Screens an EVM wallet address against the US Treasury OFAC SDN list and returns a PASS/WARN/BLOCK verdict, numeric risk score, and Ed25519-signed attestation for $0.001 USDC on Base.

*Use when:* Use when an agent needs to verify whether a crypto wallet address is sanctioned before executing a transaction, onboarding a counterparty, or satisfying compliance requirements on Base (eip155:8453).

*Not for:* Do not use for full counterparty due-diligence including domain trust, firmographics, or token risk — use the compliance-bundle endpoint ($0.05) instead. Not suitable for non-EVM address formats.

**Inputs:**

- `address` (string, required) — EVM wallet address (0x…) to screen against the US Treasury OFAC SDN list.

**Returns:** Returns verdict (PASS/WARN/BLOCK), score 0–100, OFAC SDN hit boolean with snapshot date, Ed25519 attestation, and upsell links for deeper compliance products.

**Example:** `GET https://lionx402.com/api/x402/wallet-screen-json?address=0x8589427373D6D84E98730D7795D8f6f8731FDA16`

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