@barzkit/elizaos

BarzKit plugin for ElizaOS — self-custody AI agent wallets with send, swap, lend, freeze, and x402 payments.

Installation

npm install @barzkit/elizaos @barzkit/sdk

@elizaos/core is a peer dependency — your ElizaOS project already has it.

Configuration

Add these to your ElizaOS character settings or .env:

BARZ_OWNER_KEY=0x...       # Owner private key (hex, 32 bytes)
PIMLICO_API_KEY=pk_...     # Get one at https://dashboard.pimlico.io
BARZ_CHAIN=sepolia         # sepolia | base-sepolia | base

Usage

import { barzPlugin } from '@barzkit/elizaos'

// Register the plugin in your ElizaOS character config
const character = {
  name: 'DeFi Agent',
  plugins: [barzPlugin],
  settings: {
    secrets: {
      BARZ_OWNER_KEY: process.env.BARZ_OWNER_KEY,
      PIMLICO_API_KEY: process.env.PIMLICO_API_KEY,
      BARZ_CHAIN: 'sepolia',
    },
  },
}

Once registered, your agent responds to natural language:

"Send 0.01 ETH to 0x..." — sends ETH via gasless UserOperation
"What is my balance?" — checks wallet ETH balance
"Swap 100 USDC for WETH" — swaps via Uniswap V3
"Lend 50 USDC" — supplies to Aave V3
"Freeze the wallet" — emergency kill switch
"Unfreeze the wallet" — re-enables transactions
"Fetch https://api.example.com/data" — x402 auto-payment fetch

Actions

Action	Trigger Examples
`SEND_TRANSACTION`	"send 0.1 ETH to 0x...", "transfer", "pay"
`CHECK_BALANCE`	"balance", "how much ETH", "wallet balance"
`SWAP_TOKENS`	"swap 100 USDC for WETH", "trade", "exchange"
`LEND_TOKENS`	"lend 50 USDC", "deposit", "supply"
`BATCH_TRANSACTIONS`	"batch transactions: [{...}]"
`FREEZE_WALLET`	"freeze", "lock wallet", "kill switch"
`UNFREEZE_WALLET`	"unfreeze", "unlock wallet", "resume"
`FETCH_WITH_PAYMENT`	"fetch https://...", "pay and fetch"

Architecture

@barzkit/elizaos (Plugin)
  ├── BarzService     — creates & holds BarzAgent via @barzkit/sdk
  ├── walletProvider  — injects wallet context (address, balance, status)
  └── 8 Actions       — NLP-parsed handlers for wallet operations

The plugin uses BarzService to manage the smart account lifecycle. Each action gets the service from the ElizaOS runtime, parses the user's message with regex, and calls the appropriate BarzAgent method.

Provider

The walletProvider injects wallet context into the agent's conversation:

Agent wallet: 0x... on sepolia. Balance: 0.5 ETH. Status: active.

Development

npm run build    # tsup build (ESM + DTS)
npm test         # vitest unit tests
npm run lint     # tsc --noEmit type check
npm run dev      # tsup watch mode

License

MIT