Blockchain skill

agent-wallet

Instructions only. Every action is the agent-wallet CLI: one process, JSON envelope {ok, data, error, meta} on stdout, then exit. On ok:false follow error.hint. Keys stay local (keystore v3). No custodial middleman.

Start here

Node >= 22.18. Skill packs ship dist/agent-wallet.mjs (no npm install).

Resolve CLI once (first hit wins; reuse it):

command -v agent-wallet
test -x .noob/skills/agent-wallet/agent-wallet && echo .noob/skills/agent-wallet/agent-wallet
test -f .noob/skills/agent-wallet/dist/agent-wallet.mjs && echo "node .noob/skills/agent-wallet/dist/agent-wallet.mjs"
test -x ./agent-wallet && echo ./agent-wallet

Init once per session:

agent-wallet init

Read data.ready, data.nextActions, data.notes. Do not hand-probe the install.

Passphrase (signing verbs). Do this once, then stop touching it:

1. If cwd .env already has AGENT_WALLET_PASSPHRASE, use it (CLI auto-loads .env). Do not invent another.
2. Else create .env once with AGENT_WALLET_PASSPHRASE=<random >=8 chars> and AGENT_WALLET_HOME=./.agent-wallet-data (or keep default home). Never print the passphrase in chat.
3. On PASSPHRASE_WRONG: stop. Do not brute-force, dump keystore JSON, or reverse-engineer the bundle.

Fund testnets by receiving from an external wallet or a public testnet drip site. This toolkit does not drip gas.

When to use which

Intent	Verb
Session ready?	init
New / restore wallet	wallet-create / wallet-import
Receive address	wallet-addresses
Export key / backup secrets	wallet-export (prefer --out)
Balance / fees / tx / UTXOs	balance / fees / tx / utxos
Pay someone (native, ERC-20, BTC)	send
Same-chain token A → B	swap-quote then swap (sell WETH not bare ETH; wrap first if needed)
ETH ↔ WETH	wrap / unwrap
Unknown contract	contract-learn then call/write
Deploy	contract-compile then contract-deploy
Chain meta / RPC alive	chain-resolve / chain-check

send = transfer to an address. swap = convert tokens for yourself. Never default to mainnet silently; ask which network; state it in answers.

Amounts: never invent vague sizes ("tiny", "a bit"). Use an explicit number the user gave, or pick a concrete value and state it (e.g. 0.00001 ETH display, or raw base units for swap). Leave gas headroom on the balance.

Use this CLI only for wallet/chain ops. Do not quote swaps via random web APIs (0x, Uniswap web, curl to aggregators). swap-quote / swap on the CLI are the path.

Commands

Examples use agent-wallet; substitute your resolved CLI. Chain = name (sepolia, base, ethereum) or id. One mnemonic → same EVM address on every EVM chain.

Wallet

agent-wallet wallet-create --name main
agent-wallet wallet-import --name main --mnemonic "..."
agent-wallet wallet-list
agent-wallet wallet-addresses --name main --family evm
agent-wallet wallet-addresses --name main --family btc --network signet
# secrets: prefer file (0600); only when the user asks
agent-wallet wallet-export --name main --family evm --out ./wallet-export.json
agent-wallet wallet-export --name main --family evm --include-mnemonic --out ./wallet-full.json

Mnemonic is shown ONCE at create; tell the user to back it up; the keystore cannot recover it without the passphrase. wallet-export returns address + private key (and optional mnemonic). Prefer --out <file> so secrets go to a mode-0600 file; hand the user that file or its contents only if they asked. Never export unprompted.

Read

agent-wallet balance <chain> <address> [--token 0x..]
agent-wallet fees <chain>
agent-wallet utxos <btc-network> <address>
agent-wallet tx <chain> <hash>
agent-wallet chain-resolve <chain>
agent-wallet chain-check <chain>

balance needs the address, not a wallet name. Resolve via wallet-addresses first if needed.

Send

agent-wallet send <chain> --to 0x.. --amount 0.01 --wallet main --wait
agent-wallet send <chain> --to 0x.. --amount 10 --token 0xTOKEN --wallet main --wait
agent-wallet send signet --to tb1p.. --amount-raw all --wallet main

--amount = display units (ETH/token/BTC). --amount-raw = wei/token-raw/sats (all = BTC sweep). EVM --wait waits for receipt; BTC returns txid (poll tx).

Swap / wrap (base units for swap sell amount)

agent-wallet wrap <chain> --amount 0.0001 --wallet main --wait
agent-wallet unwrap <chain> --amount 0.0001 --wallet main --wait
agent-wallet swap-quote <chain> --sell 0xWETH --buy 0xTOKEN --amount <raw> --from 0xYOU
agent-wallet swap <chain> --sell 0xWETH --buy 0xTOKEN --amount <raw> --wallet main --wait

Quote first with an exact raw amount. Do not sell bare native: wrap then sell WETH. Prefer CoW where liquid; Uniswap works on Sepolia when pools exist; Kyber on mainnets. Optional --adapter cow|kyber|uniswap, --slippage 50 (bps). Re-quote if stale.

Contracts

agent-wallet contract-learn <chain> <address>
agent-wallet contract-compile --source ./X.sol --name X
agent-wallet contract-deploy <chain> --source ./X.sol --name X --args "a,b" --wallet main
agent-wallet contract-call <chain> <addr> --fn name --args a,b --abi ./abi.json
agent-wallet contract-write <chain> <addr> --fn name --args a,b --abi ./abi.json --wallet main --wait

Never call an unknown contract before contract-learn; check verified. Use deploy/learn ABI for call/write. View → call; state change → write.

Safety

Gate is deterministic code before sign/broadcast. It cannot be talked out of a decision. Prompt text is not enforcement.

• Mainnet and testnets are allowed by default. To lock mainnets: {"gate":{"allowMainnet":false}} in ~/.agent-wallet/config.json (optional allowedChains, caps).
• Gated: send, swap, wrap, unwrap, contract-deploy, contract-write. Reads and quotes are not.
• Keys: keystore/<name>.json Web3 v3 scrypt; passphrase never logged.

Anti-patterns

• Never skip agent-wallet init on first use in a session.
• Never re-bootstrap (curl/clone) when dist/agent-wallet.mjs is already in the skill pack.
• Never default to mainnet silently; ask the network first.
• Never put the passphrase in chat; use env or .env.
• Never invent a new passphrase after wallet-create; one .env for the session/workspace.
• Never brute-force after PASSPHRASE_WRONG; never cat keystore files to recover secrets.
• Never balance with a wallet name; always an address.
• Never swap when the user asked to transfer to someone; use send (--token if ERC-20).
• Never send when they asked to convert A→B for themselves; use swap.
• On GATE_DENIED, fix config.json (mainnet was locked by the user) or use an allowed chain.
• Never execute a stale swap quote; re-quote.
• Never call an unknown contract before contract-learn.