AgentKit

AgentKit is a framework for easily enabling AI agents to take actions onchain. It is designed to be framework-agnostic, so you can use it with any AI framework, and wallet-agnostic, so you can use it with any wallet.

Table of Contents

• Getting Started
• Installation
• Usage
  • Create an AgentKit instance
  • Create an AgentKit instance with a specified wallet provider
  • Create an AgentKit instance with specified action providers
  • Use with a framework extension (e.g., LangChain + OpenAI)
• Creating an Action Provider
  • Adding Actions to your Action Provider
  • Adding Actions that use a Wallet Provider
  • Adding an Action Provider to your AgentKit instance
• Wallet Providers
  • CdpWalletProvider
    • Network Configuration
    • Configuring from an existing CDP API Wallet
    • Configuring from a mnemonic phrase
    • Exporting a wallet
    • Importing a wallet from WalletData JSON string
    • Configuring gas parameters
  • EthAccountWalletProvider
    • Configuring gas parameters
• Contributing

Getting Started

Prerequisites:

• Python 3.10+
• CDP Secret API Key

Installation

pip install coinbase-agentkit

Usage

Create an AgentKit instance

If no wallet or action providers are specified, the agent will use the CdpWalletProvider and WalletActionProvider action provider by default.

from coinbase_agentkit import AgentKit, AgentKitConfig

agent_kit = AgentKit()

Create an AgentKit instance with a specified wallet provider

from coinbase_agentkit import (
    AgentKit, 
    AgentKitConfig, 
    CdpWalletProvider, 
    CdpWalletProviderConfig
)

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    api_key_name="CDP API KEY NAME",
    api_key_private="CDP API KEY PRIVATE KEY",
    network_id="base-mainnet"
))

agent_kit = AgentKit(AgentKitConfig(
    wallet_provider=wallet_provider
))

Create an AgentKit instance with specified action providers

from coinbase_agentkit import (
    AgentKit,
    AgentKitConfig,
    cdp_api_action_provider,
    pyth_action_provider
)

agent_kit = AgentKit(AgentKitConfig(
    wallet_provider=wallet_provider,
    action_providers=[
        cdp_api_action_provider(
            api_key_name="CDP API KEY NAME",
            api_key_private="CDP API KEY PRIVATE KEY"
        ),
        pyth_action_provider()
    ]
))

Use with a framework extension

Example using LangChain + OpenAI:

Prerequisites:

• OpenAI API Key
• Set OPENAI_API_KEY environment variable

poetry add coinbase-agentkit-langchain langchain-openai langgraph

from coinbase_agentkit_langchain import get_langchain_tools
from langgraph.prebuilt import create_react_agent
from langchain_openai import ChatOpenAI

tools = get_langchain_tools(agent_kit)

llm = ChatOpenAI(model="gpt-4")

agent = create_react_agent(
    llm=llm,
    tools=tools
)

Creating an Action Provider

Action providers define the actions that an agent can take. They are created by subclassing the ActionProvider abstract class.

from coinbase_agentkit import ActionProvider, WalletProvider
from coinbase_agentkit.network import Network

class MyActionProvider(ActionProvider[WalletProvider]):
    def __init__(self):
        super().__init__("my-action-provider", [])
    
    # Define if the action provider supports the given network
    def supports_network(self, network: Network) -> bool:
        return True

Adding Actions to your Action Provider

Actions are defined using the @create_action decorator. They can optionally use a wallet provider and must return a string.

1. Define the action schema using Pydantic:

from pydantic import BaseModel

class MyActionSchema(BaseModel):
    my_field: str

2. Define the action:

from coinbase_agentkit import ActionProvider, WalletProvider, create_action
from coinbase_agentkit.network import Network

class MyActionProvider(ActionProvider[WalletProvider]):
    def __init__(self):
        super().__init__("my-action-provider", [])

    @create_action(
        name="my-action",
        description="My action description",
        schema=MyActionSchema
    )
    def my_action(self, args: dict[str, Any]) -> str:
        return args["my_field"]

    def supports_network(self, network: Network) -> bool:
        return True

def my_action_provider():
    return MyActionProvider()

Adding Actions that use a Wallet Provider

Actions that need access to a wallet provider can include it as their first parameter:

from coinbase_agentkit import ActionProvider, WalletProvider, create_action

class MyActionProvider(ActionProvider[WalletProvider]):
    @create_action(
        name="my-action",
        description="My action description",
        schema=MyActionSchema
    )
    def my_action(self, wallet_provider: WalletProvider, args: dict[str, Any]) -> str:
        return wallet_provider.sign_message(args["my_field"])

Adding an Action Provider to your AgentKit instance

agent_kit = AgentKit(AgentKitConfig(
    cdp_api_key_name="CDP API KEY NAME",
    cdp_api_key_private="CDP API KEY PRIVATE KEY",
    action_providers=[my_action_provider()]
))

Wallet Providers

AgentKit supports the following wallet providers:

EVM:

• CdpWalletProvider - Uses the Coinbase Developer Platform (CDP) API Wallet
• EthAccountWalletProvider - Uses a local private key for any EVM-compatible chain

CdpWalletProvider

The CdpWalletProvider is a wallet provider that uses the Coinbase Developer Platform (CDP) API Wallet.

Network Configuration

The CdpWalletProvider can be configured to use a specific network by passing the network_id parameter to the CdpWalletProviderConfig. The network_id is the ID of the network you want to use. You can find a list of supported networks on the CDP API docs.

from coinbase_agentkit import CdpWalletProvider, CdpWalletProviderConfig

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    api_key_name="CDP API KEY NAME",
    api_key_private="CDP API KEY PRIVATE KEY",
    network_id="base-mainnet",
))

Configuring from an existing CDP API Wallet

If you already have a CDP API Wallet, you can configure the CdpWalletProvider by passing the wallet parameter to the configureWithWallet method.

from coinbase_agentkit import CdpWalletProvider, CdpWalletProviderConfig
from cdp import Wallet

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    wallet=wallet,
    api_key_name="CDP API KEY NAME",
    api_key_private="CDP API KEY PRIVATE KEY",
))

Configuring from a mnemonic phrase

The CdpWalletProvider can be configured from a mnemonic phrase by passing the mnemonic_phrase and network_id parameters to the CdpWalletProviderConfig. If network_id is not defined, the CdpWalletProvider will fall back to the env var NETWORK_ID, and if that is not defined, it will default to base-sepolia.

from coinbase_agentkit import CdpWalletProvider, CdpWalletProviderConfig

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    mnemonic_phrase="MNEMONIC PHRASE",
    network_id="base-sepolia",
))

Exporting a wallet

The CdpWalletProvider can export a wallet by calling the export_wallet method.

from coinbase_agentkit import CdpWalletProvider

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    mnemonic_phrase="MNEMONIC PHRASE",
    network_id="base-sepolia",
))

wallet_data = wallet_provider.export_wallet()

Importing a wallet from WalletData JSON string

The CdpWalletProvider can import a wallet from a WalletData JSON string by passing the cdp_wallet_data parameter to the CdpWalletProviderConfig.

from coinbase_agentkit import CdpWalletProvider, CdpWalletProviderConfig

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    wallet_data="WALLET DATA JSON STRING",
    api_key_name="CDP API KEY NAME",
    api_key_private="CDP API KEY PRIVATE KEY",
))

Configuring CdpWalletProvider gas parameters

The CdpWalletProvider also exposes parameters for effecting the gas calculations.

from coinbase_agentkit import CdpWalletProvider, CdpWalletProviderConfig

wallet_provider = CdpWalletProvider(CdpWalletProviderConfig(
    wallet_data="WALLET DATA JSON STRING",
    api_key_name="CDP API KEY NAME",
    api_key_private="CDP API KEY PRIVATE KEY",
    gas={
        "gas_limit_multiplier": 2.0,   # Adjusts gas limit estimation
        "fee_per_gas_multiplier": 2.0  # Adjusts max fee per gas
    }
))

Note: Gas parameters only impact the wallet_provider.send_transaction behavior. Actions that do not rely on direct transaction calls, such as deploy_token, deploy_contract, and native_transfer, remain unaffected.

EthAccountWalletProvider

Example usage with a private key:

import os
from eth_account import Account

from coinbase_agentkit import (
    AgentKit, 
    AgentKitConfig, 
    EthAccountWalletProvider, 
    EthAccountWalletProviderConfig
)

# See here for creating a private key:
# https://web3py.readthedocs.io/en/stable/web3.eth.account.html#creating-a-private-key
private_key = os.environ.get("PRIVATE_KEY")
assert private_key is not None, "You must set PRIVATE_KEY environment variable"
assert private_key.startswith("0x"), "Private key must start with 0x hex prefix"

account = Account.from_key(private_key)

wallet_provider = EthAccountWalletProvider(
    config=EthAccountWalletProviderConfig(
        account=account,
        chain_id="84532",
    )
)

agent_kit = AgentKit(AgentKitConfig(
    wallet_provider=wallet_provider
))

Configuring EthAccountWalletProvider gas parameters

The EthAccountWalletProvider also exposes parameters for effecting the gas calculations.

import os
from eth_account import Account

from coinbase_agentkit import (
    AgentKit, 
    AgentKitConfig, 
    EthAccountWalletProvider, 
    EthAccountWalletProviderConfig
)

private_key = os.environ.get("PRIVATE_KEY")
assert private_key is not None, "You must set PRIVATE_KEY environment variable"
assert private_key.startswith("0x"), "Private key must start with 0x hex prefix"

account = Account.from_key(private_key)

wallet_provider = EthAccountWalletProvider(
    config=EthAccountWalletProviderConfig(
        account=account,
        chain_id="84532",
        gas={
            "gas_limit_multiplier": 2,
            "fee_per_gas_multiplier": 2
        }
    )
)

agent_kit = AgentKit(AgentKitConfig(
    wallet_provider=wallet_provider
))

Contributing

See CONTRIBUTING.md for more information.