loop-mcp
15 pay-per-call Bitcoin and developer tools, paid in sats over Lightning (L402).
Description as published in the official MCP registry.
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What we measured
| Endpoint | https://mcp.loopxxi.com/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (486 ms) | our check, 2026-10-12 |
| Protocol version | 2024-11-05 | our check, 2026-10-12 |
| Tools (15) | btc_price, btc_send_decision, lightning_address_resolve, tx_decode_explain, optimal_send_window, json_validate, json_extract, csv_to_json, text_analyze, hash_generate, base64_convert, timestamp_convert, uuid_generate, url_parse, jwt_decode | tools/list, 2026-10-12 |
| Registry version | 2.4.0 · active · updated 2026-10-08 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http loop-mcp https://mcp.loopxxi.com/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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[](https://openforallofus.com/tools/com.loopxxi/loop-mcp)<a href="https://openforallofus.com/tools/com.loopxxi/loop-mcp"><img src="https://openforallofus.com/badge/com.loopxxi/loop-mcp.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name com.loopxxi/loop-mcp.