{
  "x402Version": 2,
  "id": 31634,
  "slug": "31634",
  "resource": "https://api.hergertsynthora.com/v1/defi-yields",
  "description": "SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlama, free, no key. $0.01 USDC x402 Base.",
  "type": "http",
  "serviceName": "SYNTHORA",
  "resourceType": "Payments",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xEf879BFD6C4AccB8F795136de90246e1EC245e06",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "niche": {
          "type": "string"
        },
        "ok": {
          "type": "boolean"
        },
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "input": ""
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "niche": "defi_yields",
            "ok": true,
            "receipt": {
              "alg": "ed25519"
            },
            "result": {}
          },
          "schema": {
            "properties": {
              "error": {
                "type": "string"
              },
              "niche": {
                "type": "string"
              },
              "ok": {
                "type": "boolean"
              },
              "receipt": {
                "type": "object"
              },
              "result": {
                "properties": {
                  "apy_mediana": {
                    "type": "number"
                  },
                  "fuentes": {
                    "type": "array"
                  },
                  "n_pools": {
                    "type": "number"
                  },
                  "nota": {
                    "type": "string"
                  },
                  "outliers_riesgo": {
                    "type": "array"
                  },
                  "top": {
                    "type": "array"
                  }
                },
                "type": "object"
              }
            },
            "required": [
              "ok",
              "niche"
            ],
            "type": "object"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "input": {
                    "description": "SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlam",
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
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                "type": "string"
              },
              "type": {
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                "type": "string"
              }
            },
            "required": [
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              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
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            "properties": {
              "example": {
                "niche": {
                  "type": "string"
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                "ok": {
                  "type": "boolean"
                },
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "delivery": {
      "behaviour": "if the service FAILS (invalid input, timeout, stale cache, withdrawn product, malformed output) you receive 402 and are NOT charged",
      "note": "unlike the signature -- which you verify BEFORE paying -- this one is checked afterwards, on-chain, from your own wallet",
      "order": "compute -> failure gate -> verify -> settle -> deliver",
      "policy": "no-charge-on-service-failure",
      "scope": "this covers service FAILURE, not verdict quality",
      "verify": "after a request of yours FAILS, check your own wallet on Base: no USDC settlement to our payTo will exist for it. If we had charged you, the transfer would be public and permanent"
    },
    "signature": {
      "alg": "ed25519",
      "canon": "json:sort_keys+separators(,:)+ensure_ascii+utf8",
      "envelope": "{result, attestation:{alg,pubkey,sig,canon}}",
      "jwksUrl": "https://api.hergertsynthora.com/.well-known/jwks.json",
      "publicKeyUrl": "https://api.hergertsynthora.com/pubkey",
      "sigEncoding": "hex(64B raw)",
      "verify": "recompute canon from envelope.result, then VerifyKey(bytes.fromhex(pubkey)).verify(canon, bytes.fromhex(sig)) -- no name to trust, verify the signature yourself"
    }
  },
  "tags": [
    "defi",
    "yields",
    "apy",
    "risk",
    "stablecoins",
    "bazaar",
    "delivery",
    "signature"
  ],
  "sourceHost": "api.hergertsynthora.com",
  "lastUpdated": "2026-10-08T06:26:02.812Z",
  "quality": {
    "calls30d": 8,
    "uniquePayers30d": 5,
    "lastCalledAt": "2026-10-08T06:26:02.318Z"
  },
  "metadata": {
    "serviceName": "SYNTHORA",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": ""
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "niche": "defi_yields",
              "ok": true,
              "receipt": {
                "alg": "ed25519"
              },
              "result": {}
            },
            "schema": {
              "properties": {
                "error": {
                  "type": "string"
                },
                "niche": {
                  "type": "string"
                },
                "ok": {
                  "type": "boolean"
                },
                "receipt": {
                  "type": "object"
                },
                "result": {
                  "properties": {
                    "apy_mediana": {
                      "type": "number"
                    },
                    "fuentes": {
                      "type": "array"
                    },
                    "n_pools": {
                      "type": "number"
                    },
                    "nota": {
                      "type": "string"
                    },
                    "outliers_riesgo": {
                      "type": "array"
                    },
                    "top": {
                      "type": "array"
                    }
                  },
                  "type": "object"
                }
              },
              "required": [
                "ok",
                "niche"
              ],
              "type": "object"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "input": {
                      "description": "SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlam",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "niche": {
                    "type": "string"
                  },
                  "ok": {
                    "type": "boolean"
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
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              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "delivery": {
        "behaviour": "if the service FAILS (invalid input, timeout, stale cache, withdrawn product, malformed output) you receive 402 and are NOT charged",
        "note": "unlike the signature -- which you verify BEFORE paying -- this one is checked afterwards, on-chain, from your own wallet",
        "order": "compute -> failure gate -> verify -> settle -> deliver",
        "policy": "no-charge-on-service-failure",
        "scope": "this covers service FAILURE, not verdict quality",
        "verify": "after a request of yours FAILS, check your own wallet on Base: no USDC settlement to our payTo will exist for it. If we had charged you, the transfer would be public and permanent"
      },
      "signature": {
        "alg": "ed25519",
        "canon": "json:sort_keys+separators(,:)+ensure_ascii+utf8",
        "envelope": "{result, attestation:{alg,pubkey,sig,canon}}",
        "jwksUrl": "https://api.hergertsynthora.com/.well-known/jwks.json",
        "publicKeyUrl": "https://api.hergertsynthora.com/pubkey",
        "sigEncoding": "hex(64B raw)",
        "verify": "recompute canon from envelope.result, then VerifyKey(bytes.fromhex(pubkey)).verify(canon, bytes.fromhex(sig)) -- no name to trust, verify the signature yourself"
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.hergertsynthora.com",
    "manifest_name": "api.hergertsynthora.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {},
    "type": "string"
  }
}