Loopxxi.com MCP server

• Registry namecom.loopxxi/loop-mcpverified in the MCP registry

The registry name sits under loopxxi.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-24
• Tools15
• Server calls itselfloop-mcp
• Server version2.4.0
• Protocol version2024-11-05

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 81 ms.

• Whether its tools do the product's job has not been judged yet.
• Checked on 3 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
• Answeredmeasuring3 of the 7 daily checks it takes to print a share
• Median first answer103 ms
• Space in an agent's context≈ 1,635 tokensthe definitions of all its tools (15), which an agent carries on every turn
• Tool definitionsA · 99 of 100
• Typed results0 of 15 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 1 of 15

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• 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…

• lightning_address_resolve

  Resolve a Lightning Address ([email protected]) 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…

• 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…

• 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.