Stablecoin supply history

Daily total stablecoin circulating supply (in USD) over time from DefiLlama's free stablecoin charts, for all chains or one chain (Ethereum, Tron, Solana, Base...): most recent `days` points (default 90, max 3650) for a peg currency (USD default; EUR, JPY, ... or all pegs summed), with a summary (latest, first, min, max, mean, change over the window). Unknown chains answer 422. Keyless public data.

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Input

Example output

{
  "source": "defillama-stablecoins",
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "chain": "all",
  "peg": "USD",
  "totalPoints": 3189,
  "count": 2,
  "summary": {
    "latest": 308487484274,
    "first": 307734935324,
    "min": 307734935324,
    "max": 308487484274,
    "mean": 308111209799,
    "changePct": 0.24
  },
  "points": [
    {
      "date": "2026-08-21",
      "circulatingUsd": 307734935324
    },
    {
      "date": "2026-08-22",
      "circulatingUsd": 308487484274
    }
  ]
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/stablecoin-supply-history \
  -H "Content-Type: application/json" \
  -d '{"chain":"all","days":7}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/stablecoin-supply-history", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "chain": "all",
    "days": 7
  }),
});

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