Agent402 / tools / defi-chains

DeFi TVL by chain

$0.002 per call · USDC via x402 · POST /api/defi-chains

Blockchains ranked by DeFi TVL from DefiLlama's free chain list: name, TVL in USD, share of total DeFi TVL, native token symbol, EVM chain id and CoinGecko id; optional name search and minimum TVL; limit up to 100 (default 25). Totals carry the all-chain TVL and chain count. Keyless public data.

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Input

FieldTypeDescription
searchstringChain name substring (case-insensitive).
minTvlUsdnumberMinimum chain TVL in USD.
limitnumberRows to return (default 25, max 100).

Example output

{
  "source": "defillama-chains",
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "cached": false,
  "totals": {
    "totalTvlUsd": 120000000000,
    "chainCount": 462
  },
  "matched": 462,
  "count": 1,
  "chains": [
    {
      "rank": 1,
      "name": "Ethereum",
      "tvlUsd": 70000000000,
      "sharePct": 58.3,
      "tokenSymbol": "ETH",
      "chainId": 1,
      "geckoId": "ethereum"
    }
  ]
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/defi-chains \
  -H "Content-Type: application/json" \
  -d '{"limit":5}'

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/defi-chains", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "limit": 5
  }),
});
Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

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