LangChain

Floe exposes every action as a LangChain tool through the AgentKit adapter (TypeScript) or directly (Python).

TypeScript

npm install floe-agent @coinbase/agentkit @coinbase/agentkit-langchain

import { AgentKit } from "@coinbase/agentkit";
import { getLangChainTools } from "@coinbase/agentkit-langchain";
import { floeActionProvider } from "floe-agent";

const agentkit = await AgentKit.from({
  walletProvider,
  actionProviders: [floeActionProvider({ facilitatorApiKey: process.env.FLOE_API_KEY })],
});
const tools = await getLangChainTools(agentkit);

Python

pip install "floe-agentkit-actions[langchain]"

from floe_agentkit_actions.integrations.langchain import get_floe_langchain_tools

tools = get_floe_langchain_tools(wallet_provider)

Example

See floe-cookbook/langchain-agent for a complete LangChain agent that funds a balance, pays an x402 endpoint through the proxy, and checks its remaining spend.

Scope. Floe's spend controls cap every paid call it settles — x402 payments through the proxy and LLM tokens routed through Floe's keyless gateway at /v1/chat/completions (or the legacy BYOK metered proxy /v1/llm/chat/completions), on one ledger and one set of caps. A call sent straight to a provider with your own key, bypassing Floe, is the one thing a policy can't see. See Spend Controls.