Testnet faucet (try x402 free)

Fund any address with testnet USDC (1 USDC) or ETH (0.0001) on Base Sepolia via the Coinbase faucet — everything an agent needs to rehearse the complete x402 payment loop safely before moving real money. A tenth of a cent buys a full testnet dollar. Limits: 2 drips per address per day; CDP enforces its own rolling caps on top.

Input

Example output

{
  "funded": true,
  "network": "base-sepolia",
  "token": "usdc",
  "transactionHash": "0xabc123…",
  "explorer": "https://sepolia.basescan.org/tx/0xabc123…"
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/testnet-fund \
  -H "Content-Type: application/json" \
  -d '{"address":"0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0","token":"usdc"}'

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/testnet-fund", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "address": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
    "token": "usdc"
  }),
});

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