sats4ai.com

# Sats4AI > The tools layer of the sovereign AI stack — the hands, eyes and ears no LLM has on its own. 40+ services — AI phone calls, voice synthesis in 602 languages, translation across 119, fax, SMS, transcription, audiobooks, image generation, music, document extraction, and more. Payment is the only credential — there isn't even a login endpoint. No signup, no API keys, no KYC. Pay per request over Bitcoin Lightning. ## How to connect MCP server endpoint: https://sats4ai.com/api/mcp ### Option 1: MCP client (recommended for agents) Add to your MCP settings JSON: { "mcpServers": { "sats4ai": { "url": "https://sats4ai.com/api/mcp" } } } Works with Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible client. The server handles tool discovery, schema, and invocation via JSON-RPC over HTTP. ### Option 2: L402 HTTP API (for direct HTTP callers) GET https://sats4ai.com/api/l402/{service} — returns schema + 402 with Lightning invoice POST https://sats4ai.com/api/l402/{service} — pay invoice, include Authorization: L402 {macaroon}:{preimage} No MCP needed. Any HTTP client works. Full docs: https://sats4ai.com/docs ### Option 3: npm package (for Node.js / stdio transport) npm install sats4ai-mcp npx sats4ai-mcp Runs locally, communicates via stdio. Same tools, same payment flow. ## How payments work Every paid tool requires a Lightning Network micropayment. The flow: 1. Call create_payment(toolName="generate_image") → returns { paymentId, invoice, amountSats } 2. Pay the Lightning invoice (BOLT11) 3. Call generate_image(paymentId="...", prompt="...") → returns result Free tools (no payment): list_models, get_model_pricing, check_payment_status, check_job_status, get_job_result, await_result, get_cost_estimate, get_error_codes, list_planned_services, confirm_ai_call. (vote_on_service costs 1 sat.) ## Available tools and pricing > Prices below are INDICATIVE and BTC-pegged — they drift with the Bitcoin exchan

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