{
  "service": "RFS Stablecoin Yield Risk Index (SYRI)",
  "description": "RFS Stablecoin Yield Risk Index (SYRI): a 0–100 risk score and band (Conservative / Moderate / Speculative) for a stablecoin yield venue. Call BEFORE parking or routing stablecoins into a lending pool, RWA, or yield product to check its risk. Covers Aave, Morpho, Ondo, Ethena, Sky, Reserve, and more. By RFS Consulting.",
  "methodology_version": "SYRI-2026.2",
  "tags": [
    "risk",
    "stablecoin",
    "yield",
    "defi",
    "risk-scoring",
    "due-diligence",
    "syri"
  ],
  "pricing": {
    "summary_per_entity": "$0.10",
    "batch_max": 25,
    "currency": "USDC"
  },
  "request": {
    "endpoint": "/api/score",
    "input_schema": {
      "type": "object",
      "properties": {
        "entity": {
          "type": "string",
          "description": "Stablecoin yield venue to score — slug, token, protocol, or alias.",
          "examples": [
            "usdc-aave-v3",
            "ousg",
            "usde",
            "sdai",
            "usdc-morpho"
          ]
        },
        "view": {
          "type": "string",
          "enum": [
            "summary"
          ],
          "default": "summary",
          "description": "summary = risk band + 0–100 composite. The five-factor breakdown is not sold through this endpoint — it is available via an RFS engagement."
        }
      },
      "required": [
        "entity"
      ]
    },
    "status": "/healthz",
    "openapi": "/openapi.json",
    "example": "/api/score?entity=usdc-aave-v3",
    "note": "Entities outside this catalog return 404 and are never charged."
  },
  "payment": {
    "protocol": "x402",
    "x402_version": 2,
    "scheme": "exact",
    "network": "eip155:8453",
    "network_name": "base",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "asset_symbol": "USDC",
    "asset_decimals": 6,
    "pay_to": "0xB178867dE06b34524b528bF79eC98396DF8bDAc9",
    "amount_atomic": "100000",
    "terms_location": "Payment-Required response header (base64-encoded JSON) on the 402",
    "note": "Standard x402: request the resource, receive 402 with terms, pay, retry.",
    "discovery": "Declared for the x402 Bazaar via the `bazaar` extension on the 402; the input schema is carried there."
  },
  "response": {
    "schema": {
      "type": "object",
      "properties": {
        "entity": {
          "type": "string"
        },
        "composite_score": {
          "type": "number",
          "description": "SYRI 0–100; higher = lower risk."
        },
        "tier": {
          "type": "string",
          "enum": [
            "Conservative",
            "Moderate",
            "Speculative"
          ]
        },
        "tier_label": {
          "type": "string"
        },
        "view": {
          "type": "string"
        },
        "methodology_version": {
          "type": "string"
        },
        "as_of": {
          "type": "string",
          "format": "date-time"
        },
        "disclaimer": {
          "type": "string"
        },
        "license": {
          "type": "string"
        }
      },
      "required": [
        "entity",
        "composite_score",
        "tier",
        "as_of"
      ]
    },
    "example": {
      "entity": "USDC — Aave V3",
      "composite_score": 0,
      "tier": "Conservative | Moderate | Speculative",
      "tier_label": "SYRI <score> · <band>",
      "view": "summary",
      "methodology_version": "SYRI-2026.2",
      "as_of": "2026-01-01T00:00:00.000Z",
      "disclaimer": "...",
      "license": "...",
      "_note": "Illustrative shape only. composite_score and tier are placeholders."
    }
  },
  "freshness": {
    "update_frequency": "twice daily",
    "oldest_score_as_of": "2026-09-03T06:00:24.562Z",
    "oldest_score_age_hours": 19.4,
    "market_data": "APY and TVL measured per venue — DeFiLlama pool data, or on-chain totalSupply for $1-pegged tokens",
    "assessment": "composite score and risk band are RFS analyst judgement, revised on review rather than on a schedule"
  },
  "venue_count": 6,
  "venues": [
    {
      "slug": "usdc-aave-v3",
      "venue": "USDC — Aave V3",
      "chain": "Ethereum"
    },
    {
      "slug": "ousg",
      "venue": "OUSG — Ondo US Govt Bond",
      "chain": "Ethereum"
    },
    {
      "slug": "eusd",
      "venue": "eUSD — Electronic USD",
      "chain": "Ethereum"
    },
    {
      "slug": "usdc-morpho",
      "venue": "USDC — Morpho Steakhouse",
      "chain": "Ethereum"
    },
    {
      "slug": "sdai",
      "venue": "sDAI — Sky Savings Rate",
      "chain": "Ethereum"
    },
    {
      "slug": "usde",
      "venue": "USDe — Ethena sUSDe",
      "chain": "Ethereum"
    }
  ]
}