Faucet Helper

Claim funds from a compatible legacy faucet without reading recipient balances.

checkFaucet() attempts a claim on every invocation. It does not inspect native or sUSDC balances. The faucet server decides eligibility and enforces cooldowns; rejection is surfaced as an error rather than a successful no-op.

Supported API

This helper supports a legacy faucet API:

• POST {faucetUrl}/api/claim with JSON body { "address": "..." }.

• A successful response containing { "msg": "Txhash: 0x..." }.

It is not compatible with the current public faucet's authenticated /api/claim/new API, which returns { claimed, tier } rather than a transaction hash. Use that faucet's web interface or a separate integration for that API. Removing the balance precheck does not change the helper's HTTP protocol.

import { checkFaucet } from "seismic-viem";

// publicClient is an existing viem or shielded public client.
// faucetUrl must point to a server implementing the legacy API above.
const result = await checkFaucet({
  address: "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
  publicClient,
  faucetUrl,
});
console.log(result.hash);

On success, the helper waits for the transaction receipt and returns { sent: true, hash, txUrl? }. HTTP errors, rejected claims, malformed transaction hashes, and receipt-wait errors propagate to the caller. Invoke it on an explicit funding action rather than on every render or reconnect.

Migration

The minBalanceWei and minBalanceEther parameters and the exported parseMinBalance() function have been removed. The result no longer includes a { sent: false } variant.

Default eth_getBalance now returns a compatibility placeholder on updated reth; it cannot decide whether an account needs funds. A native balance check would also be wrong for an sUSDC faucet, since a wallet can pay gas with sUSDC while holding no native funds. See Balance RPCs.

Faucet-contract inventory monitoring is separate from recipient claims. This helper does not read inventory, perform sUSDC signed reads, or replenish the faucet.