Graded-slab lending terms: max LTV sized so a 99pc tail move over the term keeps the slab

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x642e8a7C289381f24f0395e0539f0bA41c74Cc1B",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "GueVKFK4VNe4LYvMoYAKpnJe8s7Yar6FF3r1f92gfm9y",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:4663",
    "payTo": "0x642e8a7C289381f24f0395e0539f0bA41c74Cc1B",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "grade": "PSA 10",
          "product_id": 566544,
          "term_days": 30
        },
        "type": "http"
      },
      "output": {
        "example": {
          "collateral_value_usd": 31491.25,
          "liquidation_price_usd": 16178,
          "liquidity_tier": "deep",
          "max_loan_usd": 14486,
          "max_ltv": 0.46,
          "status": "ok",
          "tool": "loan_terms",
          "value_basis": "sales-derived"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "grade": {
                  "description": "Slab grade, e.g. PSA 10 — required in practice since 2026-09-12: without it the answer is status basis_frozen (raw USD level frozen 2026-09-07)",
                  "type": "string"
                },
                "product_id": {
                  "description": "TCGplayer product id — find via free /api/v1/search",
                  "type": "integer"
                },
                "term_days": {
                  "description": "Loan term: 7, 14 or 30 (default 30 — the validated horizons)",
                  "type": "integer"
                }
              },
              "required": [
                "product_id",
                "grade"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "liquidation_price_usd": {
                  "type": "number"
                },
                "max_ltv": {
                  "type": "number"
                },
                "status": {
                  "type": "string"
                }
              },
              "required": [
                "status"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://oracle.the-undesirables.com/api/v1/loan-terms"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://oracle.the-undesirables.com/api/v1/loan-terms");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://oracle.the-undesirables.com/api/v1/loan-terms")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header