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The Undesirables Oracle · Census

by The Undesirables Oracle

GETBaseSolanaFraxtal

$0.05

per call · USD Coin on Base

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.

Endpoint

GET https://oracle.the-undesirables.com/api/v1/census

3

Calls / 30d

1

Unique payers / 30d

Sep 1

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://oracle.the-undesirables.com/api/v1/census", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://oracle.the-undesirables.com/api/v1/census?product_id=84198" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "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
}

Payment details

Pay to0x642e8a7c289381f24f0395e0539f0ba41c74cc1b
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana, Fraxtal
Schemesexact

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