How to Analyze Images with AI Using Bitcoin Lightning
Upload an image, ask a question, pay 21 sats, get your answer in seconds. No account, no subscription, no personal data required.
For Humans
Use cases for individuals, creators, and professionals
Debug screenshots instantly
Screenshot an error message, a broken UI, or a confusing dialog and ask the AI exactly what's wrong and how to fix it. Then take it further in AI Chat for a full explanation and next steps.
Read text from any photo
Extract readable text from photos of signs, labels, handwritten notes, receipts, and documents. Cheaper and faster than dedicated OCR — and you can ask follow-up questions about the content once it's extracted.
Understand charts and data
Upload a chart, graph, or infographic and ask the AI to explain the trend, identify the key insight, or compare data points. Far faster than reading the source article to find the one number you need.
Accessibility descriptions
Generate a detailed description of any image, then convert it to spoken audio with text-to-speech. Useful for making visual content accessible to visually impaired users, or for creating audio descriptions for social media posts.
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How It Works
Upload your image
Go to sats4ai.com/vision. Upload a PNG, JPEG, or WEBP file by clicking the upload area or dragging and dropping.
Ask your question
Type what you want to know. "What error is shown in this screenshot?", "Extract all text from this receipt.", "What trend does this chart show?" — any natural language question works.
Pay the Lightning invoice
Click Analyze. A QR code appears for 21 sats. Scan with any Lightning wallet — Phoenix, Breez, Wallet of Satoshi, or a WebLN browser wallet.
Get your answer
The AI processes your image and delivers a detailed response in seconds. Copy it, ask follow-up questions, or chain into other services.
For Agents
Use cases for AI agents, automation pipelines, and developers
No API key needed. The vision endpoint uses L402 — pay-per-request via Lightning. Agents send an image and a prompt, receive a 402 with an invoice, pay it, and get the analysis back as text. Integrate into any pipeline without account setup or quota management.
Content moderation
Pass user-uploaded images through the vision endpoint before publishing. Ask the AI to flag inappropriate content, verify image categories, or check for policy violations — paying only for images that actually need review.
Document intelligence
Extract structured data from scanned documents, invoices, and forms. Feed the extracted text into downstream processing — database entries, summaries, or follow-up AI Chat calls for analysis.
Product catalog enrichment
Automatically generate product descriptions, category tags, and attribute lists from product photos. Each image analyzed on demand — no batch upload, no subscription tier to manage.
Pre-flight checks for 3D / editing
Before spending sats on 3D generation or image editing, run the image through vision analysis first. Verify it has a clear subject and clean background, avoiding wasted generation attempts on poor inputs.
L402 Authentication Flow
# Step 1: Send request (returns 402 + invoice)
curl -X POST https://sats4ai.com/api/l402/analyze-image \
-H "Content-Type: application/json" \
-d '{"image":"data:image/png;base64,<BASE64_IMAGE>","prompt":"What error is shown in this screenshot?"}'
# Step 2: Pay the Lightning invoice (21 sats)
# Step 3: Resend with payment proof
curl -X POST https://sats4ai.com/api/l402/analyze-image \
-H "Content-Type: application/json" \
-H "Authorization: L402 <token>:<preimage>" \
-d '{"image":"data:image/png;base64,<BASE64_IMAGE>","prompt":"What error is shown in this screenshot?"}'MCP & OpenClaw
Chain with Other Services
Analyze the image to get key facts, then continue the conversation in AI Chat for deeper discussion, recommendations, or follow-up questions.
Use vision to identify what needs changing — then pass the same image to image editing with a natural language instruction based on what the AI found.
Generate an image description with vision, then convert it to spoken audio — making visual content accessible for visually impaired users.
Run a pre-flight analysis to confirm the reference image has a clear subject before spending sats on 3D generation.
Analyze Images — No Signup Required
21 sats per analysis. Upload any image, ask any question, get your answer in seconds. All you need is a Lightning wallet.