Pay-per-use AI APIs powered by Bitcoin Lightning
No subscriptions. No API keys. Just pay and use.
Analyze text sentiment: positive/negative/neutral with confidence score.
Fix grammar, spelling, and punctuation errors in any language.
Extract clean text content from any webpage. Perfect for AI agents.
Translate text between 100+ languages with high accuracy.
Convert text to speech. 6 natural voices, adjustable speed.
Get concise summaries of long texts. Adjustable length.
Extract text content from PDF files. Returns plain text.
Extract text from images using GPT-4 Vision. Any language.
Get the full transcript of any YouTube video with captions.
Transcribe audio with Whisper. 50+ languages supported.
Analyze images with GPT-4 Vision. Ask questions about any image.
Review code for bugs, security issues, and performance.
Remove background from any image. Returns transparent PNG.
Generate images from text with DALL-E 3. High quality.
Send your API request. You'll get a 402 response with a Lightning invoice.
Pay with any Lightning wallet (Phoenix, WoS, Breez, etc.). Takes ~1 second.
Payment confirmed → API processes your request → Result returned instantly.
# 1. Make request (returns 402 + Lightning invoice) curl -X POST https://satsapi.com/transcribe \ -F "audio=@recording.mp3" # 2. Pay the invoice from the WWW-Authenticate header # 3. Use L402 tools (lnget, Alby, etc.) for automatic payment # Or check available endpoints: curl https://satsapi.com/pricing