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Sats4AI - Bitcoin-Powered AI Tools
io.github.cnghockey/sats4ai in the official MCP registry.
Endpoint https://sats4ai.com/api/mcp. Source: github.com/cnghockey/sats4ai-mcp-server.
The registry describes it as: 40+ Lightning-paid AI tools for agents: calls, SMS, fax, voice, translation. No signup, no keys.
We read its 58 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
create_payment create_cart check_payment_status generate_image generate_video animate_image check_job_status get_job_result await_result analyze_image generate_text generate_music text_to_speech transcribe_audio transcribe_translate translate_epub generate_3d_model extract_document convert_file send_email clone_voice edit_image merge_pdfs convert_html_to_pdf render_card translate_text multilingual_ask translate_rare_language extract_receipt boardingpass_wallet e_signature epub_to_audiobook send_sms place_call send_fax receive_fax ai_call confirm_ai_call open_voice_bridge voice_bridge_say poll_voice_bridge end_voice_bridge list_models get_model_pricing get_cost_estimate get_error_codes request_refund remove_background upscale_image restore_face estimate_depth detect_nsfw detect_objects remove_object colorize_image deblur_image vote_on_service list_planned_services
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[](https://lazaretto.dev/mcp-registry/io-github-cnghockey-sats4ai)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.