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Barzkit — Self Custody Ai Agent Wallets

@barzkit

Repository

About Barzkit — Self Custody Ai Agent Wallets

Self-custody AI agent wallets with passkeys, gasless transactions & programmable permissions (ERC-4337)

#typescript#sdk#web3#ai-agents#defi#trust-wallet#account-abstraction#erc-4337#smart-accounts#barz

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "barzkit": {
      "command": "npx",
      "args": [
        "@barzkit/mcp"
      ],
      "env": {
        "BARZ_OWNER_KEY": "0xYOUR_PRIVATE_KEY",
        "PIMLICO_API_KEY": "pim_YOUR_KEY",
        "BARZ_CHAIN": "sepolia"
      }
    }
  }
}

Tools

9

Create a new self-custody AI agent wallet (ERC-4337 smart account). Must be called before any other tool.

Send ETH or ERC-20 tokens from the agent wallet to a recipient address.

Check the agent wallet balance for ETH or a specific ERC-20 token.

Swap tokens on Uniswap V3 via the agent wallet. Supports ETH, USDC, WETH, DAI.

Deposit tokens into Aave V3 lending pool via the agent wallet.

Execute multiple transactions atomically in a single UserOperation. One signature, one gas fee.

Emergency freeze the agent wallet. Kill switch — immediately stops all transactions.

Unfreeze the agent wallet to resume normal operations.

Fetch a URL with automatic x402 payment if the server returns HTTP 402. Handles machine-to-machine payments.

Overview

What is Barzkit — Self Custody Ai Agent Wallets?

An MCP server that gives AI agents self-custody ERC-4337 smart wallets on Ethereum testnets and mainnets. Designed for use with Claude Desktop, Cursor, Windsurf, VS Code Copilot, and any MCP-compatible client.

How to use Barzkit — Self Custody Ai Agent Wallets?

Add a barzkit entry to your client’s MCP configuration file using npx @barzkit/mcp. After configuration, ask the AI assistant wallet‑related natural language commands. The create_wallet tool must be run first; afterward all other tools become available.

Key features of Barzkit — Self Custody Ai Agent Wallets

  • Create ERC-4337 smart accounts on Sepolia, Base Sepolia, or Base
  • Send ETH or ERC-20 tokens to any address
  • Check wallet balances for ETH or specific tokens
  • Swap tokens via Uniswap V3
  • Lend tokens into Aave V3 lending pools
  • Emergency freeze and unfreeze wallet operations

Use cases of Barzkit — Self Custody Ai Agent Wallets

  • An AI agent creates a self‑custody wallet and funds it
  • The agent sends payments or transfers tokens on the user’s behalf
  • Automated token swaps and DeFi lending executed through natural language
  • Batch multiple transactions into a single atomic UserOperation
  • Emergency freeze of the wallet when suspicious activity is detected

FAQ from Barzkit — Self Custody Ai Agent Wallets

What are the prerequisites?

Node.js ≥ 18, a Pimlico API key (free tier: 100 UserOps/day), and an owner private key.

Must create_wallet be called first?

Yes — the wallet must be initialized with create_wallet before any other tool can be used.

Does the server support token swaps and lending?

Yes. Swaps are done via Uniswap V3 and lending via Aave V3.

What blockchains are supported?

Sepolia, Base Sepolia, and Base.

Is there an emergency freeze feature?

Yes. freeze_wallet acts as a kill switch, and unfreeze_wallet resumes normal operations.

Frequently asked questions

What are the prerequisites?

Node.js ≥ 18, a Pimlico API key (free tier: 100 UserOps/day), and an owner private key.

Must `create_wallet` be called first?

Yes — the wallet must be initialized with `create_wallet` before any other tool can be used.

Does the server support token swaps and lending?

Yes. Swaps are done via Uniswap V3 and lending via Aave V3.

What blockchains are supported?

Sepolia, Base Sepolia, and Base.

Is there an emergency freeze feature?

Yes. `freeze_wallet` acts as a kill switch, and `unfreeze_wallet` resumes normal operations.

Comments

Basic information

Category

AI & Agents

Transports

stdio

Author

barzkit

Submitted by

Yur

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