Quickstart

Prerequisites

Node.js 18+
A browser with passkey support (Chrome, Safari, Firefox)

Run init

npx enact-wallet init

This guides you through three steps:

Create your wallet

Opens your browser and registers a passkey. Your key is derived from the passkey inside your device’s secure enclave — never stored in plaintext anywhere.

Fund your wallet

Send stablecoins (USDC.e, pathUSD) to your wallet address. The CLI displays your address and polls your balance until funds arrive.

Create an agent session

Prompts for a spending limit and expiry, then opens your browser for passkey approval of the on-chain authorization.

When complete, a .env file is written to your project:

AGENT_PRIVATE_KEY=0x...
AGENT_ROOT_ADDRESS=0x...
AGENT_ACCESS_KEY_ADDRESS=0x...
AGENT_RPC_URL=https://rpc.moderato.tempo.xyz
AGENT_CHAIN_ID=42431
AGENT_BUDGET_USD=100

AGENT_PRIVATE_KEY is an access key — not your root wallet. It has a hard spending limit enforced on-chain. Your root wallet is secured by your passkey and never exposed.

Make your first paid request

npx enact-wallet pay '<url>'

Enact handles the 402 Payment Required flow automatically. Preview the cost before paying:

npx enact-wallet pay --dry-run '<url>'

Check your balance and session

npx enact-wallet balance    # token balances for your root wallet
npx enact-wallet session    # session info + remaining spending limit

Use in your agent code

Once .env is set, integrate with mppx:

import { Mppx, tempo } from "mppx/client";
import { Account } from "viem/tempo";

const account = Account.fromSecp256k1(process.env.AGENT_PRIVATE_KEY, {
  access: process.env.AGENT_ROOT_ADDRESS,
});

const mppx = Mppx.create({
  methods: [tempo({ account })],
});

// fetch now handles 402 automatically
const response = await mppx.fetch("https://api.example.com/resource");

Get Started

CLI Reference

Integrations

Concepts

Prerequisites

Run init

Make your first paid request

Check your balance and session

Use in your agent code

Next steps

MCP Integration

CLI Reference

​Prerequisites

​Run init

​Make your first paid request

​Check your balance and session

​Use in your agent code

​Next steps

MCP Integration

CLI Reference

Prerequisites

Run init

Make your first paid request

Check your balance and session

Use in your agent code

Next steps