Menu
Read-only Ethereum wallet introspection — balance, ERC-20 holdings, recent transfer history for any 0x address.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
| name | eth-wallet |
| description | Read-only Ethereum wallet introspection — balance, ERC-20 holdings, recent transfer history for any 0x address. |
| user_invocable | true |
| args | <subcommand> [flags] |
Wraps fluxum eth-wallet for quick on-chain wallet queries from a single Claude Code invocation. No keys, no signing — pure JSON-RPC reads.
| Subcommand | Purpose | Required flags |
|---|---|---|
balance | Native ETH balance | -address 0x... |
erc20 | ERC-20 token balance | -address 0x... -token 0x... |
transfers | Recent Transfer events for the address | -address 0x... -token 0x... [-since 7d | -last-blocks N] |
All subcommands accept -rpc-url URL (defaults to https://1rpc.io/eth; override with ETH_RPC_URL env var if you have an Alchemy/Infura key).
cd ~/projects/fluxum && eval "$(opam env)" && dune exec ./app/cli.exe -- eth-wallet $ARGS
$ARGS is everything after /eth-wallet — pass through unchanged so the user's flags reach the CLI.
/eth-wallet balance -address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045
/eth-wallet erc20 -address 0x... -token 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
/eth-wallet transfers -address 0x... -token 0x... -since 24h
These are public knowledge but useful as sanity-check defaults:
0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 (6 decimals)0xdAC17F958D2ee523a2206206994597C13D831ec7 (6 decimals)0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 (18 decimals)0x6c6EE5e31d828De241282B9606C8e98Ea48526E2 (18 decimals)balance / erc20 print one line: <amount> <symbol> (or just <amount> for tokens with no symbol metadata).transfers prints one line per event: blk=N IN/OUT/SLF <amount> <symbol> <counterparty> tx=0x... sorted oldest-first.If the RPC returns an error, the command exits non-zero with ERROR: <sexp> on stderr — show that to the user verbatim, since the sexp form preserves the polymorphic-variant tag for diagnosis.
-rpc-url (block-time heuristic in transfers --since assumes 12s/block — pass -last-blocks N directly on faster chains).transfers lookbacks paginate in 10k-block chunks with a 200ms pause; if you see Max_logs_per_call_exceeded, narrow the window. As of 2026-04-27: 1rpc.io/eth (default), ethereum-rpc.publicnode.com, eth.drpc.org all handle batching cleanly; eth.llamarpc.com 429s on Multicall3 follow-ups; cloudflare-eth.com errors on batches; ankr.com/eth now requires an API key.fluxum's exchange or DEX adapters.