Built for the OpenClaw ecosystem

Stop juggling API keys.
Start shipping agents.

ClawStack is a single subscription API that bundles email service and crypto payments for your OpenClaw agent. One key. One bill. Everything works.

// Before: 5 API keys, 5 dashboards, surprise bills
// After:

import { email, payments } from 'clawstack'

await email.send({
  to: 'user@example.com',
  subject: 'Your invoice',
  body: invoiceHtml
})

await payments.createInvoice({
  amount: 49.99,
  currency: 'USDC',
  network: 'ethereum'
})

The problem every OpenClaw builder knows

You want your agent to send emails and accept crypto. So you sign up for Postmark, then NOWPayments, then manage two dashboards, two billing cycles, and pray your agent doesn't burn through $600 in a night.

  • 🔑
    API key sprawl 5+ providers, each with separate auth, rate limits, and docs
  • 💸
    Bill shock Developers report surprise bills of $600+ from unmonitored agents
  • 🔧
    Integration fatigue Every new service means new SDKs, new error handling, new monitoring
  • 📊
    No unified billing Impossible to see total cost across fragmented providers

Two APIs. One subscription. Zero surprises.

Everything your OpenClaw agent needs to communicate and get paid.

📨

Email Service

Send transactional emails, manage inboxes, and handle notifications. Built for agents that need to communicate on behalf of your users, with deliverability you can trust.

₿

Crypto Payments

Accept BTC, ETH, USDC, and 50+ tokens. Create invoices, manage subscriptions, and settle in crypto or fiat. One API call to get paid from anywhere in the world.

📦

Single API Key

One key authenticates everything. No more managing separate credentials for each service. Rotate, scope, and monitor from a single dashboard.

🧮

Predictable Pricing

Flat monthly subscription with transparent usage tiers. Know exactly what you'll pay before your agent sends a single request. No surprise bills at month-end.

Three steps. Five minutes.

Step 01

Install the skill

Add ClawStack to your OpenClaw instance with a single command. The skill auto-configures email and payment endpoints.

Step 02

Set your API key

One key from your ClawStack dashboard. Drop it in your OpenClaw config. That's the last credential you'll ever manage for these services.

Step 03

Ship your agent

Your agent can now send emails and accept crypto payments. Usage tracking, cost alerts, and billing all live in one place.

Your agent shouldn't need a finance team to send an invoice.

ClawStack handles the infrastructure so you can focus on what your agent actually does. Email and crypto payments, unified under one API, one bill, one dashboard.

Get Your API Key Read the Docs