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CDP AgentKit Extension - Langchain Toolkit

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CDP integration with Langchain to enable agentic workflows using the core primitives defined in cdp-agentkit-core. This toolkit contains tools that enable an LLM agent to interact with the Coinbase Developer Platform. The toolkit provides a wrapper around the CDP SDK, allowing agents to perform onchain operations like transfers, trades, and smart contract interactions.

Prerequisites

Installation

npm install @coinbase/cdp-langchain

Environment Setup

Set the following environment variables:

export CDP_API_KEY_NAME=<your-api-key-name>
export CDP_API_KEY_PRIVATE_KEY=<your-private-key>
export OPENAI_API_KEY=<your-openai-api-key>
export NETWORK_ID=base-sepolia  # Optional: Defaults to base-sepolia

Usage

Basic Setup

import { CdpToolkit } from "@coinbase/cdp-langchain";
import { CdpAgentkit } from "@coinbase/cdp-agentkit-core";

// Initialize CDP AgentKit
const agentkit = await CdpAgentkit.configureWithWallet();

// Create toolkit
const toolkit = new CdpToolkit(agentkit);

// Get available tools
const tools = toolkit.getTools();

Available Tools

The toolkit provides the following tools:

  1. get_wallet_details - Get details about the user's Wallet
  2. get_balance - Get balance for specific assets
  3. request_faucet_funds - Request test tokens from faucet
  4. transfer - Transfer assets between addresses
  5. trade - Trade assets (Mainnet only)
  6. deploy_token - Deploy ERC-20 token contracts
  7. mint_nft - Mint NFTs from existing contracts
  8. deploy_nft - Deploy new NFT contracts
  9. register_basename - Register a Basename for the wallet
  10. wow_create_token - Deploy a token using Zora's Wow Launcher (Bonding Curve)
  11. wow_buy_token - Buy Zora Wow ERC-20 memecoin with ETH
  12. wow_sell_token - Sell Zora Wow ERC-20 memecoin for ETH

Using with an Agent

Additional Installations

npm install @langchain/langgraph @langchain/openai
import { ChatOpenAI } from "@langchain/openai";
import { HumanMessage } from "@langchain/core/messages";
import { createReactAgent } from "@langchain/langgraph/prebuilt";

// Initialize LLM
const model = new ChatOpenAI({
  model: "gpt-4o-mini",
});

// Create agent executor
const agent = createReactAgent({
  llm: model,
  tools,
});

// Example usage
const result = await agent.invoke({
  messages: [new HumanMessage("Send 0.005 ETH to john2879.base.eth")],
});

console.log(result.messages[result.messages.length - 1].content);

CDP Toolkit Specific Features

Wallet Management

The toolkit maintains an MPC wallet that persists between sessions:

// Export wallet data
const walletData = await agentkit.exportWallet();

// Import wallet data
const importedAgentkit = await CdpAgentkit.configureWithWallet({ cdpWalletData: walletData });

Network Support

The toolkit supports multiple networks.

Gasless Transactions

The following operations support gasless transactions on Base Mainnet:

  • USDC transfers
  • EURC transfers
  • cbBTC transfers

Examples

Check out examples/ for inspiration and help getting started:

  • Chatbot: Interactive chatbot with onchain capabilities

Contributing

See CONTRIBUTING.md for detailed setup instructions and contribution guidelines.

Security and bug reports

The CDP AgentKit team takes security seriously. See SECURITY.md for more information.

Documentation

License

Apache-2.0