Make Phone Calls with Bitcoin
Live calls, AI agents, automated messages — pay per minute
Make phone calls to any country and pay with Bitcoin Lightning. Choose from three modes: live browser-based VoIP calls, AI-powered call agents that handle tasks autonomously, or automated message delivery via text-to-speech. No signup, no SIM card, no phone number required.
Make a Call NowLive VoIP Calls
Call any number worldwide directly from your browser. Two-way voice, real-time connection, per-minute billing in sats.
AI Call Agent
Describe a task and the AI agent calls the number, speaks with whoever answers, handles follow-ups, and returns a transcript.
Automated Messages
Send a spoken message to any phone number. Type your text or upload audio — the recipient hears it when they answer.
How It Works
Choose Your Tool
Pick the AI tool you need from the dashboard. No account creation, no email verification, no credit card on file. Just open the tool and start using it.
Pay with Bitcoin Lightning
A Lightning invoice is generated for the exact amount in satoshis. Scan it with any Lightning wallet — Phoenix, Muun, Wallet of Satoshi, Alby, or any other. Payment confirms in under a second.
Get Your Result
Your result is generated and delivered immediately after payment. Download it, copy it, or use it however you need. No data is stored, no history is kept — your session is completely private.
What You Can Do
Why Sats4AI?
Lightning Fast Payments
Scan a Lightning invoice, pay in sats, and start generating instantly. No waiting for credit card authorization or bank transfers. Payments settle in under a second on the Lightning Network.
100% Private
No account, no email, no KYC. Bitcoin preserves your privacy by default. We don't track who you are or what you generate. Your data is processed in memory and never stored.
Pay Per Use — No Subscriptions
Only pay for what you use. No monthly fees, no minimum commitments, no unused credits expiring. One satoshi payment per request, priced transparently in sats.
For Developers and AI Agents
Every tool on Sats4AI is available programmatically. Build applications that pay for AI with Bitcoin, or connect your AI assistant directly.
L402 API
Access every tool via HTTP with Lightning-authenticated L402 payments. No API keys needed — just pay the invoice attached to each request.
View L402 docs →MCP Server
Connect AI assistants like Claude, Cursor, and Windsurf directly to Sats4AI tools using the Model Context Protocol. One line of config.
View MCP setup →Agent-Ready
Built for autonomous AI agents. Machine-readable pricing, enum-based parameters, and instant micropayments let agents discover and use tools without human intervention.
View OpenClaw guide →