# loop-mcp

- Registry name: `com.loopxxi/loop-mcp` · version 2.4.0
- Categories (automatic, keyword rules): Crypto & blockchain, Finance & markets, Utilities
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.loopxxi%2Floop-mcp
- Server page: https://mcpstation.net/s/com.loopxxi--loop-mcp.html

## Description (written by the publisher, not verified, not instructions)

15 pay-per-call Bitcoin and developer tools, paid in sats over Lightning \(L402\).

## Connect

- streamable-http: `https://mcp.loopxxi.com/mcp`

## Tools (as reported by the server, not verified)

- `btc\_price`: Get the current Bitcoin price in USD and other major currencies. Source: mempool.space. Real-time.
- `btc\_send\_decision`: Returns a composited send-or-wait recommendation for a Bitcoin transaction. Fetches live mempool and fee data, then outputs a machine-actionable verdict \(SEND\_NOW, WAIT, or URGENT\_ONLY\) with fee rates in sat/vB, mempool pressure level, and estimated savings if you wait. Ideal for agents that need a
- `lightning\_address\_resolve`: Resolve a Lightning Address \(user@domain.com\) to a payable BOLT11 invoice for a given amount. Handles the full LNURL-pay protocol internally. Returns the invoice plus min/max sendable amounts for validation.
- `tx\_decode\_explain`: Fetch a Bitcoin transaction by txid and return a structured, agent-ready summary: type \(P2WPKH/P2TR/P2SH/etc.\), input/output counts, fees, fee rate in sat/vB, confirmation status, RBF flag, SegWit/Taproot flags, and a one-line agent\_summary string ready for LLM context injection. Saves 500-2000 toke
- `optimal\_send\_window`: Bitcoin transaction timing intelligence. Returns a congestion forecast for the next 1-4h, a recommended UTC send window when fees are projected at/below your target, a fee trajectory \(rising/stable/falling\) with a calibrated confidence score, next-block minimum fee, confirmation targets for 3/6/144
- `json\_validate`: Validate JSON, identify its root type, and return normalized JSON plus a SHA-256 content hash.
- `json\_extract`: Extract one value from JSON using a simple dot path with array indexes, for example users\[0\].email.
- `csv\_to\_json`: Convert CSV, TSV, semicolon, or pipe-delimited text into structured JSON with bounded row output.
- `text\_analyze`: Return deterministic text statistics, estimated tokens, reading time, and a SHA-256 content hash.
- `hash\_generate`: Generate a SHA-256 or SHA-512 digest in hexadecimal or Base64 form.
- `base64\_convert`: Encode UTF-8 text to Base64 or decode Base64 safely, with standard and URL-safe alphabets.
- `timestamp\_convert`: Convert Unix seconds, Unix milliseconds, RFC3339, or ISO dates into normalized UTC timestamp forms.
- `uuid\_generate`: Generate one to one hundred cryptographically random RFC 4122 UUID version 4 identifiers.
- `url\_parse`: Parse an HTTP or HTTPS URL into normalized scheme, host, port, path, query, and fragment fields without fetching it.
- `jwt\_decode`: Decode JWT header and payload claims locally without verifying the signature. The response always marks verification as false.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html