Coinbase Agentkit

Coinbase AgentKit

AgentKit is Coinbase's open-source framework for building AI agents with onchain capabilities. It provides wallet management, 50+ built-in actions (transfers, swaps, contract deployment, NFT minting), and integrations with LangChain, Vercel AI SDK, and Model Context Protocol. Framework-agnostic and wallet-agnostic — works with CDP wallets, Viem, Privy, and ZeroDev.

Source: https://github.com/coinbase/agentkit

What You Probably Got Wrong

LLMs have stale training data. These are the most common mistakes.

• cdp-agentkit-nodejs is deprecated → The old @coinbase/cdp-agentkit-core and @coinbase/cdp-langchain packages are retired. The current package is @coinbase/agentkit with framework extensions @coinbase/agentkit-langchain and @coinbase/agentkit-vercel-ai-sdk. If you see imports from cdp-agentkit, you are using the deprecated SDK.
• "CdpWalletProvider" is the class name → It was renamed to CdpEvmWalletProvider in v0.1+. There is also CdpSmartWalletProvider for smart contract wallets and CdpV2SolanaWalletProvider for Solana. Using the old name will fail.
• "AgentKit needs an OpenAI key" → AgentKit itself is model-agnostic. It creates tools/actions that any LLM framework can call. You only need an OpenAI key if you use LangChain with ChatOpenAI. It works equally well with Anthropic, Google, or local models.
• "npm install agentkit" → The correct package is @coinbase/agentkit. The scoped name is required.
• Node.js 18 is fine → AgentKit requires Node.js v22+. Earlier versions will fail silently or throw runtime errors.
• "AgentKit only works on Base" → AgentKit supports any EVM network and Solana. Base has the deepest protocol integrations (Basename, Compound, Morpho), but wallet operations work on Ethereum, Arbitrum, Polygon, Optimism, and more.
• Using AgentKit.from() with no config → Default setup uses CdpEvmWalletProvider and requires CDP_API_KEY_ID and CDP_API_KEY_SECRET environment variables. Without them, initialization throws a cryptic error about missing credentials.
• Hardcoding private keys → ViemWalletProvider accepts a private key for local testing, but production agents must use CdpEvmWalletProvider or CdpSmartWalletProvider where keys are managed by CDP infrastructure.

Installation

npm install @coinbase/agentkit

With LangChain integration:

npm install @coinbase/agentkit @coinbase/agentkit-langchain @langchain/langgraph @langchain/openai

With Vercel AI SDK:

npm install @coinbase/agentkit @coinbase/agentkit-vercel-ai-sdk ai @ai-sdk/openai

Scaffold a complete project:

npm create onchain-agent@latest

Requirements

• Node.js v22+
• CDP Secret API Key (from https://portal.cdp.coinbase.com)
• TypeScript with emitDecoratorMetadata: true in tsconfig (for custom actions)

CDP API Key Setup

1. Go to https://portal.cdp.coinbase.com
2. Create a project or select an existing one
3. Navigate to API Keys and create a new Secret API Key
4. Save both the Key ID and Key Secret

Set environment variables:

export CDP_API_KEY_ID="your-key-id"
export CDP_API_KEY_SECRET="your-key-secret"

Or use a .env file (never commit this):

CDP_API_KEY_ID=your-key-id
CDP_API_KEY_SECRET=your-key-secret

Wallet Providers

AgentKit is wallet-agnostic. Choose a provider based on your security and UX requirements.

CdpEvmWalletProvider

CDP-managed wallets. Keys are stored and signed server-side by Coinbase infrastructure. Best for production agents.

import { CdpEvmWalletProvider } from "@coinbase/agentkit";

const wallet = await CdpEvmWalletProvider.configureWithWallet({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
  networkId: "base-sepolia",
});

console.log("Wallet address:", wallet.getAddress());
console.log("Network:", wallet.getNetwork().networkId);

Persist and restore wallet state across sessions:

const exportedData = wallet.exportWallet();
const serialized = JSON.stringify(exportedData);

const restored = await CdpEvmWalletProvider.configureWithWallet({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
  cdpWalletData: JSON.parse(serialized),
});

CdpSmartWalletProvider

ERC-4337 smart contract wallets with gasless transactions via paymasters. Ideal for agents that need sponsored gas.

import { CdpSmartWalletProvider } from "@coinbase/agentkit";

const smartWallet = await CdpSmartWalletProvider.configureWithWallet({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
  networkId: "base-sepolia",
  paymasterUrl: process.env.PAYMASTER_URL,
});

ViemWalletProvider

Use any viem-compatible wallet. Useful for local development and testing where you control the private key.

import { ViemWalletProvider } from "@coinbase/agentkit";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { baseSepolia } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY as `0x${string}`);
const client = createWalletClient({
  account,
  chain: baseSepolia,
  transport: http(),
});

const wallet = new ViemWalletProvider(client);

PrivyWalletProvider

Privy server wallets for applications that already use Privy for auth.

import { PrivyWalletProvider } from "@coinbase/agentkit";

const wallet = await PrivyWalletProvider.configureWithWallet({
  appId: process.env.PRIVY_APP_ID,
  appSecret: process.env.PRIVY_APP_SECRET,
  networkId: "base-sepolia",
});

Core: AgentKit Initialization

import { AgentKit } from "@coinbase/agentkit";

const agentKit = await AgentKit.from({
  walletProvider: wallet,
  actionProviders: [
    walletActionProvider(),
    erc20ActionProvider(),
    cdpApiActionProvider({
      apiKeyId: process.env.CDP_API_KEY_ID,
      apiKeySecret: process.env.CDP_API_KEY_SECRET,
    }),
  ],
});

If no walletProvider or actionProviders are specified, AgentKit defaults to CdpEvmWalletProvider with walletActionProvider.

Action Providers

Action providers define what an agent can do onchain. Each provider groups related actions.

Wallet Actions

import { walletActionProvider } from "@coinbase/agentkit";

const actions = walletActionProvider();

Provides: getBalance, getWalletDetails, nativeTransfer

ERC20 Token Actions

import { erc20ActionProvider } from "@coinbase/agentkit";

const actions = erc20ActionProvider();

Provides: getBalance, transfer, approve, getAllowance

ERC721 NFT Actions

import { erc721ActionProvider } from "@coinbase/agentkit";

const actions = erc721ActionProvider();

Provides: mint, transfer, getBalance

WETH Actions

import { wethActionProvider } from "@coinbase/agentkit";

const actions = wethActionProvider();

Provides: wrapEth (ETH to WETH)

CDP API Actions

Requires CDP API credentials. Provides access to Coinbase's swap and faucet APIs.

import { cdpApiActionProvider } from "@coinbase/agentkit";

const actions = cdpApiActionProvider({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
});

Provides: requestFaucet, tradeTokens (swap via CDP API)

Compound Actions

import { compoundActionProvider } from "@coinbase/agentkit";

const actions = compoundActionProvider();

Provides: supply, withdraw, borrow, repay, getPortfolio

Morpho Actions

import { morphoActionProvider } from "@coinbase/agentkit";

const actions = morphoActionProvider();

Provides: deposit, withdraw

Pyth Price Feed Actions

import { pythActionProvider } from "@coinbase/agentkit";

const actions = pythActionProvider();

Provides: fetchPrice (real-time price data from Pyth oracles)

Basename Actions

Register and manage Base names (ENS equivalent on Base).

import { basenameActionProvider } from "@coinbase/agentkit";

const actions = basenameActionProvider();

Provides: registerBasename

Social Actions

import { twitterActionProvider } from "@coinbase/agentkit";
import { farcasterActionProvider } from "@coinbase/agentkit";

const twitter = twitterActionProvider();
const farcaster = farcasterActionProvider();

Twitter provides: postTweet, getAccountDetails Farcaster provides: postCast, getAccountDetails

Additional Providers

LangChain Integration

The most common integration pattern. Converts AgentKit actions into LangChain tools.

import { AgentKit } from "@coinbase/agentkit";
import { getLangChainTools } from "@coinbase/agentkit-langchain";
import { ChatOpenAI } from "@langchain/openai";
import { createReactAgent } from "@langchain/langgraph/prebuilt";
import { MemorySaver } from "@langchain/langgraph";

const agentKit = await AgentKit.from({
  walletProvider: wallet,
  actionProviders: [
    walletActionProvider(),
    erc20ActionProvider(),
    cdpApiActionProvider({
      apiKeyId: process.env.CDP_API_KEY_ID,
      apiKeySecret: process.env.CDP_API_KEY_SECRET,
    }),
  ],
});

const tools = await getLangChainTools(agentKit);

const llm = new ChatOpenAI({ model: "gpt-4o" });
const memory = new MemorySaver();

const agent = createReactAgent({
  llm,
  tools,
  checkpointSaver: memory,
});

const result = await agent.invoke(
  { messages: [{ role: "user", content: "What is my wallet address?" }] },
  { configurable: { thread_id: "session-1" } }
);

Vercel AI SDK Integration

import { AgentKit } from "@coinbase/agentkit";
import { getVercelAITools } from "@coinbase/agentkit-vercel-ai-sdk";
import { openai } from "@ai-sdk/openai";
import { generateText } from "ai";

const agentKit = await AgentKit.from({ walletProvider: wallet });
const tools = await getVercelAITools(agentKit);

const { text } = await generateText({
  model: openai("gpt-4o"),
  tools,
  prompt: "Get my wallet balance on Base Sepolia",
  maxSteps: 5,
});

Model Context Protocol (MCP)

AgentKit can run as an MCP server, exposing actions to any MCP-compatible client.

npm install @coinbase/agentkit-model-context-protocol

import { AgentKit } from "@coinbase/agentkit";
import { getMcpTools } from "@coinbase/agentkit-model-context-protocol";

const agentKit = await AgentKit.from({ walletProvider: wallet });
const server = getMcpTools(agentKit);
server.listen();

Custom Action Providers

Create domain-specific actions by extending ActionProvider.

Requires emitDecoratorMetadata: true in your tsconfig.json:

{
  "compilerOptions": {
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  }
}

Define a custom action:

import {
  ActionProvider,
  WalletProvider,
  Network,
  CreateAction,
} from "@coinbase/agentkit";
import { z } from "zod";

const CheckPriceSchema = z.object({
  tokenSymbol: z.string().describe("Token symbol to check price for"),
});

class PriceCheckerProvider extends ActionProvider<WalletProvider> {
  constructor() {
    super("price-checker", []);
  }

  @CreateAction({
    name: "check_price",
    description: "Check the current USD price of a token",
    schema: CheckPriceSchema,
  })
  async checkPrice(
    walletProvider: WalletProvider,
    params: z.infer<typeof CheckPriceSchema>
  ): Promise<string> {
    const response = await fetch(
      `https://api.coingecko.com/api/v3/simple/price?ids=${params.tokenSymbol}&vs_currencies=usd`
    );
    const data = await response.json();
    return JSON.stringify(data);
  }

  supportsNetwork(_network: Network): boolean {
    return true;
  }
}

export const priceCheckerProvider = () => new PriceCheckerProvider();

Register with AgentKit:

const agentKit = await AgentKit.from({
  walletProvider: wallet,
  actionProviders: [
    walletActionProvider(),
    priceCheckerProvider(),
  ],
});

Network Configuration

Switching Networks

const wallet = await CdpEvmWalletProvider.configureWithWallet({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
  networkId: "base-mainnet",
});

Common Network IDs

Custom RPC (ViemWalletProvider)

import { defineChain } from "viem";

const customChain = defineChain({
  id: 84532,
  name: "Base Sepolia",
  nativeCurrency: { name: "ETH", symbol: "ETH", decimals: 18 },
  rpcUrls: {
    default: { http: ["https://your-rpc-url.com"] },
  },
});

const client = createWalletClient({
  account,
  chain: customChain,
  transport: http("https://your-rpc-url.com"),
});

Security Model

API Key Scoping

CDP API keys can be scoped to specific actions. In the CDP portal:

• Create separate keys for testnet vs mainnet
• Limit spending per key with rate limits
• Rotate keys regularly — old keys can be revoked instantly

Wallet Export

CDP wallets can export private keys for migration, but this should be rare:

const exportedWallet = wallet.exportWallet();

Once exported, the key material leaves CDP infrastructure. Handle with extreme care.

Production Checklist

1. Use CdpEvmWalletProvider or CdpSmartWalletProvider (not Viem with raw keys)
2. Set spending limits on CDP API keys
3. Use separate API keys for testnet and mainnet
4. Store CDP_API_KEY_SECRET in a secrets manager (not .env in production)
5. Enable webhook notifications for wallet activity
6. Implement transaction approval logic before signing high-value transactions
7. Use CdpSmartWalletProvider with paymasters for gasless UX

Testnet Faucet

Request testnet tokens via the CDP faucet action:

import { cdpApiActionProvider } from "@coinbase/agentkit";

const cdpActions = cdpApiActionProvider({
  apiKeyId: process.env.CDP_API_KEY_ID,
  apiKeySecret: process.env.CDP_API_KEY_SECRET,
});

The requestFaucet action is available on Base Sepolia and Ethereum Sepolia.

Quickstart: Scaffold a New Agent

The fastest way to start:

npm create onchain-agent@latest
cd my-onchain-agent
cp .env.example .env
# Fill in CDP_API_KEY_ID, CDP_API_KEY_SECRET, OPENAI_API_KEY
npm install
npm run dev

This creates a chatbot agent with wallet access, token operations, and LangChain integration out of the box.

Common Patterns

Check Balance Before Transfer

const agentKit = await AgentKit.from({
  walletProvider: wallet,
  actionProviders: [walletActionProvider(), erc20ActionProvider()],
});

const tools = await getLangChainTools(agentKit);
const agent = createReactAgent({ llm, tools });

const result = await agent.invoke({
  messages: [{
    role: "user",
    content: "Check my ETH balance, and if I have more than 0.01 ETH, send 0.005 ETH to 0x742d35Cc6634C0532925a3b844Bc9e7595f2bD18",
  }],
});

Multi-Action Agent

const agentKit = await AgentKit.from({
  walletProvider: wallet,
  actionProviders: [
    walletActionProvider(),
    erc20ActionProvider(),
    erc721ActionProvider(),
    wethActionProvider(),
    cdpApiActionProvider({
      apiKeyId: process.env.CDP_API_KEY_ID,
      apiKeySecret: process.env.CDP_API_KEY_SECRET,
    }),
    compoundActionProvider(),
    pythActionProvider(),
    basenameActionProvider(),
  ],
});

Version History

Last verified: February 2026 against @coinbase/agentkit v0.2.x