Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpeip155:4663

Observed graded-slab census for a card: how many PSA/BGS/CGC/TAG slabs of each grade are c

Observed graded-slab census for a card: how many PSA/BGS/CGC/TAG slabs of each grade are circulating on the open market, with cert-number-verified depth, 30-day active counts and median asks. This is NOT a pop report — pop counts every slab ever graded (including vaulted); this census counts what is actually listed and pressing on price. Harvested daily from eBay conditionDescriptors (grader+grade are marketplace-required fields), committed on-chain daily under a census domain tag.

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Claim this listing
50000 (raw units)
price
4
calls / 30d
1
unique payers
2026-09-17
updated

Provider

oracle.the-undesirables.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x642e8a7C289381f24f0395e0539f0bA41c74Cc1B",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "GueVKFK4VNe4LYvMoYAKpnJe8s7Yar6FF3r1f92gfm9y",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:4663",
    "payTo": "0x642e8a7C289381f24f0395e0539f0bA41c74Cc1B",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "product_id": 84198
        },
        "type": "http"
      },
      "output": {
        "example": {
          "by_grade": [
            {
              "active_30d": 12,
              "certs": 22,
              "grade": "10",
              "grader": "PSA",
              "median_ask": 1899,
              "slabs": 31
            }
          ],
          "card": "Charizard - Base Set",
          "status": "ok",
          "tool": "slab_census",
          "total_slabs": 112,
          "unique_certs": 74
        },
        "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": {
                "product_id": {
                  "description": "TCGplayer product id — find it via the free /api/v1/search",
                  "type": "integer"
                }
              },
              "required": [
                "product_id"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "by_grade": {
                  "type": "array"
                },
                "status": {
                  "type": "string"
                },
                "total_slabs": {
                  "type": "integer"
                }
              },
              "required": [
                "status"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

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

JavaScript

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

Python

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

Machine-readable

Everything on this page is also available as clean JSON at /resources/3433.json, and this resource appears in /discovery/resources and /discovery/search.