sats4ai-mcp

33+ AI tools paid with Bitcoin Lightning. No signup, no API keys, no KYC.

A remote MCP (Model Context Protocol) server that gives AI agents access to image generation, video creation, text generation, speech, translation, image processing, OCR, audiobook conversion, email, SMS, voice cloning, and more — all paid per-use with Lightning Network micropayments.

Quick Setup

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "sats4ai": {
      "url": "https://sats4ai.com/api/mcp"
    }
  }
}

Claude Code

claude mcp add sats4ai --transport http https://sats4ai.com/api/mcp

Cursor

Add to your MCP settings:

{
  "mcpServers": {
    "sats4ai": {
      "url": "https://sats4ai.com/api/mcp"
    }
  }
}

stdio proxy (legacy MCP clients)

For clients that don't support remote HTTP servers, use the bundled stdio proxy:

npx sats4ai-mcp

Or in your config:

{
  "mcpServers": {
    "sats4ai": {
      "command": "npx",
      "args": ["sats4ai-mcp"]
    }
  }
}

Any MCP Client

The server URL is:

https://sats4ai.com/api/mcp

This is a remote HTTP server — no local process, no dependencies, no installation needed.

Available Tools

AI Generation

Tool	Description	Price
image	Generate images from text prompts	100-200 sats
video	Generate videos from text prompts	50 sats/unit
video_from_image	Animate a still image into video	100 sats/sec
text	Chat with AI language models (262K context)	~1 sat/100 chars
translate_text	Translate text across 119 languages	~1 sat/1000 chars
music	Generate songs with AI vocals	100 sats
3d	Convert a photo to a 3D GLB model	350 sats

Audio & Speech

Tool	Description	Price
tts	Text-to-speech with 3 tiers: OmniVoice Global (602+ langs), Inworld Premium (#1 ranked TTS ELO 1217), Minimax Studio (voice cloning)	10-100 chars/sat
transcription	Speech to text (13 languages)	10 sats/min
voice_clone	Clone a voice from an audio sample	7,500 sats
epub_to_audiobook	Convert books (EPUB/PDF/TXT) to full audiobooks with chapter markers, optional translation. Same 3 TTS tiers.	500+ sats

Image Processing

Tool	Description	Price
remove_background	Remove background from any image (BiRefNet, SOTA)	5 sats
upscale_image	Upscale images 2x/4x with Real-ESRGAN	5 sats
restore_face	Restore blurry/damaged faces (CodeFormer)	5 sats
colorize_image	Colorize B&W photos (DDColor, ICCV 2023)	5 sats
deblur_image	Remove camera-shake blur (NAFNet, ECCV 2022)	20 sats
detect_nsfw	Classify image safety (normal/suggestive/explicit)	2 sats
detect_objects	Detect objects with bounding boxes (Grounding DINO)	5 sats
remove_object	Remove objects by description — no mask needed	15 sats
image_edit	Edit images with AI instructions	Dynamic

Vision & Documents

Tool	Description	Price
vision	Analyze and describe image content	21 sats
ocr	Extract text from PDFs and images	10 sats/page
extract_receipt	Receipt to structured JSON	50 sats
file_convert	Convert between 200+ file formats	100 sats
pdf_merge	Merge multiple PDFs into one	100 sats
convert_html_to_pdf	HTML/Markdown to PDF	50 sats

Communication

Tool	Description	Price
email	Send email to any address	200 sats
sms	Send SMS worldwide	Dynamic
call	Place automated phone calls	Dynamic
ai_call	AI voice agent phone calls (async)	Dynamic

Helper Tools

Tool	Description
list_models	Browse available AI models and pricing
get_model_pricing	Get pricing for a specific model
create_payment	Create a Lightning invoice for a service
check_payment_status	Check if payment was received
check_job_status	Poll async jobs (video, 3D, audiobook)
get_job_result	Get completed job results
request_refund	Request a refund for a failed service
vote_on_service	Upvote or downvote a planned service
list_planned_services	See upcoming services and vote

How It Works

1. Agent calls list_models to discover available models and pricing
2. Agent calls create_payment — gets a Lightning invoice
3. Payment is made via the agent's Lightning wallet (e.g., lightning-wallet-mcp)
4. Agent calls the tool (e.g., image, text) with the paymentId
5. Result is returned — base64 image, text, URL, etc.

No API keys. No accounts. No rate limits tied to identity. Just Bitcoin and AI.

Error Handling & Refunds

When a paid tool fails after payment, the JSON-RPC error response includes an error_code and refund information:

{
  "jsonrpc": "2.0",
  "id": 3,
  "error": {
    "code": -32603,
    "message": "Image generation timed out",
    "data": {
      "error_code": "TIMEOUT",
      "refund": {
        "charge_id": 12345,
        "refund_amount": 200,
        "lnurl_withdraw": "lnurl1dp68gurn8ghj7...",
        "status": "pending"
      }
    }
  }
}

Error Codes

Code	Meaning	Action
TIMEOUT	Service timed out	Retry later or try different model
CONTENT_FILTERED	Safety filter triggered	Rephrase prompt
RATE_LIMITED	Too many requests	Wait and retry
INVALID_INPUT	Bad parameters	Fix request parameters
SERVICE_ERROR	Service failure	Try different model

Refund Fields

Field	Description
charge_id	The original payment charge ID
refund_amount	Amount in sats being refunded
lnurl_withdraw	LNURL-withdraw string to claim the refund
status	Refund status (e.g., pending, claimed)

Claim the refund using any LNURL-compatible wallet or the claim_lnurl_withdraw tool from lightning-wallet.

Payment via Agent Wallets

Pair with a Lightning wallet MCP server so your agent can pay autonomously:

{
  "mcpServers": {
    "sats4ai": {
      "url": "https://sats4ai.com/api/mcp"
    },
    "lightning-wallet": {
      "command": "npx",
      "args": ["lightning-wallet-mcp"]
    }
  }
}

The agent uses lightning-wallet to pay invoices from sats4ai, enabling fully autonomous AI tool usage.

L402 API

For direct HTTP integration without MCP, use the L402 API:

# Step 1: Request -> get 402 + Lightning invoice
curl -X POST https://sats4ai.com/api/l402/generate-image \
  -H "Content-Type: application/json" \
  -d '{"input": {"prompt": "a cat in space"}}' -i

# Step 2: Pay the invoice with any Lightning wallet

# Step 3: Re-send with proof
curl -X POST https://sats4ai.com/api/l402/generate-image \
  -H "Content-Type: application/json" \
  -H "Authorization: L402 <macaroon>:<preimage>" \
  -d '{"input": {"prompt": "a cat in space"}}'

Full L402 docs: sats4ai.com/l402 | Code examples: sats4ai-l402-examples

Service Discovery

Machine-readable endpoints for agent discovery:

# Full service catalog with pricing, quality benchmarks, and performance metadata
GET https://sats4ai.com/.well-known/l402-services

# MCP tool catalog with latency (p50/p95), reliability, and failure modes
GET https://sats4ai.com/api/mcp/discovery

# Semantic search — find tools by capability
GET https://sats4ai.com/api/discover?q=translate

# Per-service metadata with enums and input schemas
GET https://sats4ai.com/api/l402/{service}

Every paid tool includes performance metadata (latency p50/p95, reliability rating, known failure modes) so agents can make informed decisions about which tools to call and how long to wait.

Programmatic Usage

const { SERVER_URL, TOOLS, getClaudeConfig } = require("sats4ai-mcp");

console.log(SERVER_URL);       // "https://sats4ai.com/api/mcp"
console.log(TOOLS);            // ["image", "video", "text", ...]
console.log(getClaudeConfig()) // { mcpServers: { sats4ai: { url: "..." } } }

Links

• Website: sats4ai.com
• MCP Docs: sats4ai.com/mcp
• L402 API Docs: sats4ai.com/l402
• L402 Code Examples: github.com/cnghockey/sats4ai-l402-examples
• Service Discovery: sats4ai.com/.well-known/l402-services
• Semantic Search: sats4ai.com/api/discover

License

MIT