robins.tools
Tools

Batch Balance Checker

Fetch native and token balances for hundreds of addresses in one multicall, then sort and export.

The Batch Balance Checker reads the native ETH balance and any token balances you choose for a whole list of addresses at once. It is read-only (no wallet needed) and batches every read through Multicall3, so a large list is a handful of RPC round-trips. Results sort by any column and export to CSV.

What it does

  • Checks native ETH plus up to five ERC-20 tokens across up to 500 addresses.
  • Uses Multicall3 so hundreds of reads become a few requests.
  • Produces a sortable table with per-column totals and a full-precision CSV export.

Step by step

  1. Add addresses. Paste a list or upload a .csv/.txt file. Addresses are validated and deduplicated automatically; invalid lines are flagged. The cap is 500 addresses, with a clear message if you exceed it.
  2. Add tokens (optional). Native ETH is always included. Paste a token address to add a column; its symbol and decimals are fetched and it appears as a removable chip. Up to 5 tokens; a non-ERC-20 or invalid address is rejected inline.
  3. Fetch. Reads are chunked (up to 300 calls per multicall) with a progress indicator. Native balances ride the same Multicall3 pipeline via getEthBalance.
  4. Sort and export. Click any column header to sort ascending or descending. A totals row sums each column. Export CSV downloads full-precision decimal values (no truncation) with columns address,eth,<symbol>….

States

  • Idle shows the accepted input formats.
  • Loading shows chunk progress (x of y).
  • Partial failure: if some chunks fail (usually RPC rate limits), you can retry just the failed ones.
  • Empty: a clear message when there is nothing to show.

Fees and gas

Free. This tool only reads the chain and sends no transactions.

Limits and safety

  • Up to 500 addresses and 5 tokens per run.
  • Displayed amounts are formatted for readability; the CSV export keeps full precision for accounting.
  • Large lists on the public RPC can hit rate limits; use the failed-chunk retry, or self-host with a dedicated RPC (see the Network reference).
  • Balances are a snapshot at fetch time; re-fetch for current values.

Contract Interactor

Read and write any contract from its ABI, auto-loaded from the explorer or pasted in.

Transaction Decoder

Turn a transaction hash or raw calldata into a human-readable function call, parameters, and value.

On this page

What it doesStep by stepStatesFees and gasLimits and safety