MCP server for AgentWallet: self-custody local signing on EVM and Solana, or hosted wallets. Sign, broadcast, pay x402 invoices, and accept x402
Connect Agentwallet MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP server for AgentWallet: self-custody local signing on EVM and Solana, or hosted wallets. Sign, broadcast, pay x402 invoices, and accept x402 payments. The agentwallet mcp mcp server is what makes that connection.
Permissionless wallet infrastructure for AI agents. Create wallets, sign transactions, and broadcast on-chain, on any EVM chain and Solana. Built-in guards. No KYC. The only AI agent wallet that accepts crypto for its own API fees.
Local signing uses viem for EVM and @solana/web3.js for Solana, plus bs58 for key parsing. SPL instructions are built by hand rather than with @solana/spl-token, because that package pulls in bigint-buffer, which carries a high severity buffer overflow advisory. A wallet has no business shipping that to save a dozen lines of instruction encoding.
Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
create_wallet — Create a new EVM or Solana walletlist_wallets — List all your walletsget_wallet — Get wallet details by IDget_balance — Check native token balance on any chainget_token_balance — Check ERC-20 or SPL token balanceget_token_info — Get ERC-20 token name, symbol, and decimalstransfer — Send native tokens (ETH, SOL, POL, BNB, etc.)transfer_token — Send ERC-20 or SPL tokens (USDC, USDT, etc.)send_transaction — Sign and broadcast a raw transactionsign_transaction — Sign a transaction without broadcastingcall_contract — Read-only contract call (eth_call)approve_token — Approve ERC-20 token spending for DeFiConfiguration is passed through the environment: AGENTWALLET_PRIVATE_KEY, AGENTWALLET_RPC_8453, AGENTWALLET_MAX_TX_NATIVE, AGENTWALLET_SOLANA_KEY, AGENTWALLET_SOLANA_RPC, AGENTWALLET_MAX_TX_SOL, AGENTWALLET_USER, AGENTWALLET_PASS. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Plenty of knowledge and memory servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Agentwallet MCP's toolset — create_wallet, list_wallets, get_wallet and 11 more — is a fair guide to whether it matches your workflow. It is maintained by hifriendbot; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| create_wallet | Create a new EVM or Solana wallet |
| list_wallets | List all your wallets |
| get_wallet | Get wallet details by ID |
| get_balance | Check native token balance on any chain |
| get_token_balance | Check ERC-20 or SPL token balance |
| get_token_info | Get ERC-20 token name, symbol, and decimals |
| transfer | Send native tokens (ETH, SOL, POL, BNB, etc.) |
| transfer_token | Send ERC-20 or SPL tokens (USDC, USDT, etc.) |
| send_transaction | Sign and broadcast a raw transaction |
| sign_transaction | Sign a transaction without broadcasting |
| call_contract | Read-only contract call (eth_call) |
| approve_token | Approve ERC-20 token spending for DeFi |
| get_allowance | Check ERC-20 token allowance |
| wrap_eth | Wrap native tokens to WETH/WAVAX/etc. |
{
"mcpServers": {
"agentwallet": {
"command": "npx",
"args": ["-y", "agentwallet-mcp"],
"env": {
"AGENTWALLET_PRIVATE_KEY": "0xyour_key",
"AGENTWALLET_RPC_8453": "https://your-own-rpc",
"AGENTWALLET_MAX_TX_NATIVE": "0.05"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| AGENTWALLET_PRIVATE_KEY | Credential the server authenticates with. | Yes |
| AGENTWALLET_RPC_8453 | Configuration value read at startup. | Optional |
| AGENTWALLET_MAX_TX_NATIVE | Configuration value read at startup. | Optional |
| AGENTWALLET_SOLANA_KEY | Credential the server authenticates with. | Yes |
| AGENTWALLET_SOLANA_RPC | Configuration value read at startup. | Optional |
| AGENTWALLET_MAX_TX_SOL | Configuration value read at startup. | Optional |
| AGENTWALLET_USER | Configuration value read at startup. | Optional |
| AGENTWALLET_PASS | Configuration value read at startup. | Optional |
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