@layerhop/agentkit

@layerhop/agentkit

Coinbase AgentKit action provider for LayerHop: best-price cross-chain and same-chain swaps across EVM chains and Solana, plus quotes, simulation, tracking, token lookup, prices, deposit addresses and checkout.

LayerHop never sees keys. In AgentKit's model the wallet provider you configure signs with your own wallet (CDP, Privy, viem, ...). layerhop_execute_swap hands it the unsigned transactions for a quote the user explicitly confirmed.

npm install @layerhop/agentkit @coinbase/agentkit

import { AgentKit, CdpEvmWalletProvider } from "@coinbase/agentkit";
import { getLangChainTools } from "@coinbase/agentkit-langchain";
import { layerhopActionProvider } from "@layerhop/agentkit";

const walletProvider = await CdpEvmWalletProvider.configureWithWallet({ networkId: "base-mainnet" });
const agentkit = await AgentKit.from({
  walletProvider,
  actionProviders: [
    layerhopActionProvider({
      integrator: "myapp",       // your partner id: your agent's swaps earn your partner fee
      integratorFeeBps: 25,      // optional override (honored with your partner API key)
      apiKey: process.env.LAYERHOP_API_KEY, // optional; for deposit addresses and checkout
    }),
  ],
});
const tools = await getLangChainTools(agentkit);

Actions: layerhop_list_chains, layerhop_list_tokens, layerhop_get_prices, layerhop_get_quote, layerhop_build_transaction, layerhop_simulate_transaction, layerhop_report_submitted, layerhop_get_order_status, layerhop_get_swap_link, layerhop_create_deposit_address, layerhop_get_deposit_address, layerhop_create_checkout_session and layerhop_execute_swap.

layerhop_execute_swap { quoteId, userConfirmed: true } refuses unless the quote came from layerhop_get_quote with sender = the wallet's address, has not expired, and the wallet is on the quote's chain. On EVM it sends the ERC-20 approval only when the allowance is short (from the built transaction's approval), waits for it, sends the swap with walletProvider.sendTransaction, then reports the hash for tracking. Solana wallet providers sign the serialized transaction (needs @solana/web3.js, already a dependency of AgentKit). Test-mode (lh_test_) placeholder transactions are never sent. Use layerhopActionProvider({ enableSwapExecution: false }) for a quote-only agent.

Tested with @coinbase/agentkit 0.10.4.

Guide: https://docs.layerhop.com/guides/agent-frameworks

MIT licensed.