DeFi TVL by chain

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). Send POST /api/defi-chains with no required fields (3 optional) and pay $0.002 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, fetchedAt, cached, totals, matched and 2 more.

Totals carry the all-chain TVL and chain count. Keyless public data.

Category: Crypto & onchain data · Tags: crypto defi tvl chains ranking defillama l1 l2

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Parameters

Example request

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

Without payment this returns HTTP 402 Payment Required with the exact price for defi-chains; any x402 v2 or MPP client pays it and retries.

Example response

{
  "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"
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "defi-chains",
  "params": {
    "limit": 5
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for defi-chains; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• Every field is optional. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A GET or HEAD to /api/defi-chains returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

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();
client.setSpendControls?.(false); // keep your own spending ceiling in code
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
  }),
});

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