modbender agent-wallet
Self-custodial Lightning wallet for AI agents, built by MoneyDevKit. One command to init. All output is JSON.
Source: @moneydevkit/agent-wallet on npm · GitHub
Security & Transparency
This skill runs @moneydevkit/agent-wallet — an npm package published by MoneyDevKit. What it does:
- Generates and stores a BIP39 mnemonic at
~/.mdk-wallet/config.json— this IS your private key. Treat it like a password. - Runs a local daemon on
localhost:3456— HTTP server for wallet operations. Binds to localhost only (not externally accessible). - Connects outbound to MDK's Lightning infrastructure.
- Persists payment history to
~/.mdk-wallet/.
No data is sent to external servers beyond standard Lightning protocol operations. You can verify this by inspecting the source code or the published npm tarball.
Recommended: Pin a version (npx @moneydevkit/agent-wallet@0.11.0) in production.
Quick Start
# Initialize wallet (generates mnemonic)
npx @moneydevkit/agent-wallet init
# Get balance
npx @moneydevkit/agent-wallet balance
# Create invoice
npx @moneydevkit/agent-wallet receive 1000
# Pay someone
npx @moneydevkit/agent-wallet send user@getalby.com 500
How It Works
The CLI automatically starts a daemon on first command. The daemon:
- Runs a local HTTP server on
localhost:3456 - Connects to MDK's Lightning infrastructure
- Polls for incoming payments every 30 seconds
- Persists payment history to
~/.mdk-wallet/
No webhook endpoint needed — the daemon handles everything locally.
Setup
First-time initialization
npx @moneydevkit/agent-wallet init
This command:
- Generates a BIP39 mnemonic — 12-word seed phrase that IS your wallet
- Creates config at
~/.mdk-wallet/config.json - Derives a walletId — deterministic 8-char hex ID from your mnemonic
- Starts the daemon — local Lightning node on port 3456
The wallet is ready immediately. No API keys, no signup, no accounts. The agent holds its own keys.
View existing config
npx @moneydevkit/agent-wallet init --show
Returns { "mnemonic": "...", "network": "mainnet", "walletId": "..." }.
Note: init will refuse to overwrite an existing wallet. To reinitialize:
npx @moneydevkit/agent-wallet stop
rm -rf ~/.mdk-wallet # WARNING: backup mnemonic first!
npx @moneydevkit/agent-wallet init
Commands
All commands return JSON on stdout. Exit 0 on success, 1 on error.
| Command | Description |
|---|---|
init |
Generate mnemonic, create config |
init --show |
Show config (mnemonic redacted) |
start |
Start the daemon |
balance |
Get balance in sats |
receive <amount> |
Generate invoice |
receive |
Generate variable-amount invoice |
receive <amount> --description "..." |
Invoice with custom description |
receive-bolt12 |
Generate a BOLT12 offer (variable amount, reusable) |
send <destination> [amount] |
Pay bolt11, bolt12, lnurl, or lightning address |
payments |
List payment history |
status |
Check if daemon is running |
stop |
Stop the daemon |
restart |
Restart the daemon |
Balance
npx @moneydevkit/agent-wallet balance
→ { "balance_sats": 3825 }
Receive (generate invoice)
# Fixed amount
npx @moneydevkit/agent-wallet receive 1000
# Variable amount (payer chooses)
npx @moneydevkit/agent-wallet receive
# With description
npx @moneydevkit/agent-wallet receive 1000 --description "payment for service"
→ { "invoice": "lnbc...", "payment_hash": "...", "expires_at": "..." }
Receive BOLT12 Offer
npx @moneydevkit/agent-wallet receive-bolt12
→ { "offer": "lno1..." }
BOLT12 offers are reusable and don't expire — share one offer and receive unlimited payments to it. Unlike BOLT11 invoices, the payer chooses the amount.
Send
npx @moneydevkit/agent-wallet send <destination> [amount_sats]
Destination auto-detection:
- bolt11 invoice:
lnbc10n1...(amount encoded, no arg needed) - bolt12 offer:
lno1... - lightning address:
user@example.com - LNURL:
lnurl1...
For lightning addresses and LNURL, amount is required:
npx @moneydevkit/agent-wallet send user@getalby.com 500
Payment History
npx @moneydevkit/agent-wallet payments
→ { "payments": [{ "paymentHash": "...", "amountSats": 1000, "direction": "inbound"|"outbound", "timestamp": ..., "destination": "..." }] }
Upgrading
# Stop the running daemon
npx @moneydevkit/agent-wallet stop
# Run with @latest to pull the newest version
npx @moneydevkit/agent-wallet@latest start
Your wallet config and payment history in ~/.mdk-wallet/ are preserved across upgrades.
Usage Notes
- Denomination: use ₿ prefix with sats (e.g. ₿1,000 not "1,000 sats")
- Self-custodial: the mnemonic IS the wallet. Back it up. Lose it, lose funds.
- Daemon: runs a local Lightning node on
:3456. Auto-starts, persists to disk. - Agent-to-agent payments: any agent with this wallet can pay any other agent's invoice or lightning address.
What's Next?
Want to accept payments from customers? Use the moneydevkit skill to add checkouts to any website. Agent-wallet handles agent-to-agent payments; moneydevkit handles customer-to-agent payments. Together they give your agent full payment superpowers.