--- name: llm_wallet description: Manage crypto wallets and make x402 micropayments with USDC stablecoins on Polygon homepage: https://github.com/x402/llm-wallet-mcp metadata: {"openclaw": {"emoji": "💰", "requires": {"bins": ["node"]}, "install": [{"id": "node", "kind": "node", "package": "llm-wallet-mcp", "bins": ["llm-wallet-mcp"], "label": "Install LLM Wallet MCP (node)"}]}} --- # LLM Wallet - Crypto Wallet & x402 Micropayments Use `llm-wallet` commands to manage crypto wallets and make micropayments to paid APIs using USDC stablecoins on Polygon blockchain. **Default Network**: Polygon Testnet (polygon-amoy) - safe for testing **Facilitator**: https://x402-amoy.polygon.technology ## Quick Start ```bash # Create wallet llm-wallet create # Check balance llm-wallet balance # Set spending limits (recommended) llm-wallet set-limit --per-tx 0.10 --daily 5.00 # View transaction history llm-wallet history ``` ## Wallet Management ### Create Wallet ```bash llm-wallet create [--label ] ``` Creates a new HD wallet with encryption. Returns wallet address. **Example:** ```bash llm-wallet create --label "agent-wallet" ``` ### Import Wallet ```bash llm-wallet import --private-key [--label ] ``` Import existing wallet from private key. ### Check Balance ```bash llm-wallet balance ``` Shows USDC balance and native token balance on current network. ### Transaction History ```bash llm-wallet history ``` View all transactions and payments made from this wallet. ## Spending Limits ### Set Limits ```bash llm-wallet set-limit --per-tx --daily ``` Set per-transaction and daily spending caps in USDC. **Example:** ```bash llm-wallet set-limit --per-tx 0.10 --daily 5.00 ``` ### Check Limits ```bash llm-wallet get-limits ``` View current spending limits and daily usage. ## x402 Payments ### Make Payment ```bash llm-wallet pay [--method GET|POST] [--body ] ``` Make x402 micropayment to a paid API endpoint. **⚠️ IMPORTANT: Always ask user for approval before making payments!** **Example:** ```bash # Ask user: "I need to make a payment to https://api.example.com/weather. Cost: $0.001 USDC. Approve?" llm-wallet pay "https://api.example.com/weather?location=London" ``` **Workflow:** 1. Check if payment is needed: `llm-wallet check-payment ` 2. Show user: URL, estimated cost, current limits 3. Wait for user approval 4. Execute: `llm-wallet pay ` 5. Confirm completion and show transaction ID ### Check Payment (Pre-flight) ```bash llm-wallet check-payment ``` Checks if wallet can afford payment without executing it. ## Dynamic API Registration ### Register API ```bash llm-wallet register-api --name ``` Register a paid API endpoint as a reusable tool. **Example:** ```bash llm-wallet register-api "https://api.example.com/weather" --name weather_api ``` ### List Registered APIs ```bash llm-wallet list-apis ``` Show all registered API tools. ### Call Registered API ```bash llm-wallet call-api [--params ] ``` Execute a registered API tool. Requires approval if payment needed. **Example:** ```bash # Ask user for approval first if cost > 0 llm-wallet call-api weather_api --params '{"location": "London"}' ``` ### Unregister API ```bash llm-wallet unregister-api ``` Remove a registered API tool. ## Seller Tools (Advanced) ### Verify Payment ```bash llm-wallet verify-payment --header --requirements ``` Verify incoming payment from a buyer (seller-side). ### Create Payment Requirements ```bash llm-wallet create-requirements --price --pay-to

--url ``` Generate payment requirements for a protected resource. ## Safety Rules 1. **Network Default**: Always uses polygon-amoy (testnet) unless configured otherwise 2. **Approval Required**: Always ask user before making payments 3. **Spending Limits**: Check limits before payment attempts 4. **Transaction Logging**: All payments are logged with timestamps 5. **Encryption**: Wallets are encrypted with AES-256-GCM ## Configuration ### Environment Variables - `WALLET_ENCRYPTION_KEY` - Wallet encryption key (32+ chars, auto-generated if missing) - `WALLET_NETWORK` - Network selection (default: `polygon-amoy` | `polygon`) - `FACILITATOR_URL` - Custom facilitator URL (auto-configured) - `WALLET_MAX_TX_AMOUNT` - Per-transaction limit override - `WALLET_DAILY_LIMIT` - Daily limit override ### Network Info - **Polygon Testnet (Amoy)**: Chain ID 80002, Facilitator: https://x402-amoy.polygon.technology - **Polygon Mainnet**: Chain ID 137, Facilitator: https://x402.polygon.technology ## Common Workflows ### First Time Setup ```bash # 1. Create wallet llm-wallet create --label "my-agent" # 2. Set spending limits llm-wallet set-limit --per-tx 0.10 --daily 5.00 # 3. Check balance (will be 0 initially) llm-wallet balance # 4. Fund wallet with testnet USDC # User needs to: visit https://faucet.polygon.technology/ ``` ### Making a Payment ```bash # 1. Pre-check payment llm-wallet check-payment "https://api.example.com/weather?location=London" # 2. Show user: URL, cost estimate, current limits # 3. Ask user: "Approve payment of $0.001 USDC to https://api.example.com/weather?" # 4. If approved, execute payment llm-wallet pay "https://api.example.com/weather?location=London" # 5. Confirm and show transaction ID llm-wallet history ``` ### Registering a Paid API ```bash # 1. Register the API llm-wallet register-api "https://api.example.com/translate" --name translate_api # 2. List available APIs llm-wallet list-apis # 3. Call the API (with approval) llm-wallet call-api translate_api --params '{"text": "hello", "to": "es"}' # 4. View payment in history llm-wallet history ``` ## Error Handling - **Insufficient Balance**: Show error and guide user to faucet (testnet) or funding instructions (mainnet) - **Payment Rejected**: Transaction reverted, check error message for details - **Limit Exceeded**: Show current limits and daily usage, suggest increasing limits - **Network Timeout**: Retry with exponential backoff (max 3 attempts) ## References See `references/` folder for: - `x402-protocol.md` - x402 payment protocol overview - `wallet-setup.md` - Detailed wallet setup guide - `examples.md` - More usage examples ## Notes - All amounts are in USDC (6 decimals) - Default network is testnet for safety - Testnet USDC has no real value - Always verify network before mainnet usage - Keep encryption key secure (never share or commit)

llm_wallet

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