RFS Stablecoin Yield Risk Index — x402 API

Machine-payable SYRI risk scores for stablecoin yield venues. This landing page is static; the paid data lives in a serverless function.

Call the endpoint (no payment → you get a 402 with payment instructions):

curl -i "/api/score?entity=usdc-aave-v3"

An x402-aware client (or AI agent) pays the quoted USDC and retries automatically, then receives:

{
  "entity": "USDC — Aave V3",
  "composite_score": 82,
  "tier": "Moderate",
  "view": "summary"
}

Add &view=full for the five factor subscores + venue attributes (APY, TVL, audits, warnings).
Running in simulation mode? Send any X-PAYMENT header to bypass real settlement:
curl "/api/score?entity=usde" -H "X-PAYMENT: sim"