Convert EPUB to Audiobook
AI narration — per-character pricing in sats
Upload any EPUB book and convert it to a full audiobook with AI narration. Choose from multiple voices and languages, adjust playback speed from 0.5x to 2x, and download chapter-by-chapter MP3 files. Pay with Bitcoin Lightning — no signup, no subscription.
Convert a Book NowFull Book Narration
Convert entire EPUB files into chapter-by-chapter MP3 audiobooks with natural AI voices.
Multi-Language
Multiple voices across dozens of languages. Pick the voice and language that fits your book.
Customizable
Adjust playback speed from 0.5x to 2x. Choose voice quality level. Download individual chapters.
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 delivered after payment. Sats4AI creates no account-linked usage history, but keeps transaction and limited operational or abuse-prevention records. Providers needed to run the tool process request data under their own policies.
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.
No Account Profile
No signup or KYC. Pay per request without creating an account. Sats4AI keeps transaction and limited operational or abuse-prevention records; providers needed to run the tool process request data under their own policies.
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 →