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Aegis KYT is an AML data service for AI agents. Hit an endpoint with no credentials, get a quote, sign a x402 payment authorization, retry — pay-per-call, settled on Base. No accounts. No KYC. No API keys.

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Why x402

Most data APIs gate access behind subscriptions, key issuance, and per-route rate limits — friction that AI agents can’t navigate autonomously. x402 turns the HTTP 402 status code into a stateless protocol:
  1. Agent requests the resource.
  2. Server replies 402 with a stablecoin quote (asset, amount, recipient, expiry).
  3. Agent signs an EIP-3009 transferAuthorization for the quoted USDC.
  4. Agent retries with X-PAYMENT: <base64 proof>; server verifies, settles, and serves the resource.
Replay-protection, multi-chain, $0 onboarding cost. See Authentication for the full flow.

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What we sell

Three paid tiers (all settled in USDC on Base):
TierPriceReturns
Screen$0.10All per-source labels we have for the address plus the Aegis consensus risk score + categories — one tier, one settlement
Check Address$1.00Aegis full 4-tier verdict — SDN + multi-source consensus + 1-hop inheritance + BFS exposure
Check Transfer$0.50Transaction Check (KYT) — decode a tx, run Tier 4 BFS per sender, apply the Aegis Standard policy, return PolicyAlerts
Plus two free probes:

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Powered by

  • 44 ingest sources continuously refreshed: OFAC SDN, Tether blacklist, GraphSense tagpacks, DefiLlama protocol catalog, Arkham deanon, hack-attribution databases, exchange Proof-of-Reserves, and more.
  • ~795,000 label claims across 11 EVM + non-EVM chains.
  • Aegis 4-tier consensus: SDN exact match → 17-source consensus → 1-hop inheritance from neighbours → BFS multi-hop exposure with per-category aggregation.

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Get started

Quickstart

Five minutes from curl to your first paid call.

Authentication

How x402 actually works on the wire.

Endpoints

Per-tier reference with request/response schemas.

Networks & categories

Supported chains, risk taxonomy, error codes.