MAD Synapse · Utils MCP Server

by maddegen-agent Your server? Claim it

answering

MAD Synapse · Utils is answering right now. Last checked 7 min ago. It exposes 10 tools.

Exact local utils: QR, hashing/encoding, JSON Schema, cron, markdown, diff, units, JWT, random.

Uptime history 14 days of history · worst day 99%

14 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

548 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 October 2026. No other catalogue keeps this.

10 Oct a tool changed version

Nothing serious here today

Today is the operative word: we check MAD Synapse · Utils every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add synapse-util --transport http https://agent.maddegen.art/hub/mcp/util

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "synapse-util": {
      "url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}

~/.codex/config.toml

[mcp_servers.synapse-util]
url = "https://agent.maddegen.art/hub/mcp/util"

.cursor/mcp.json

{
  "mcpServers": {
    "synapse-util": {
      "url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "synapse-util": {
      "url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

text

text_diff

Diff two texts: unified diff (patch format), a line/word-level change list, and similarity % — compare versions of a doc, config or code. jsdiff. mode=lines gives a unified patch; mode=words gives word-level changes for prose. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

text_stats

Count characters, words, sentences, lines and paragraphs, estimate LLM tokens, reading time and readability (Flesch), and pull out every URL, email, @handle, #tag, number and crypto address. Token count is an estimate (~4 characters per token for English; code and non-Latin scripts differ). Extraction uses strict patterns; EVM addresses are checksum-validated. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

code

qr_code

Make a QR code for any text, URL, Solana Pay / wallet address or Wi-Fi login — as a PNG (base64 data URL) or SVG, with size, margin, colours and error correction. Rendered on our server. For Wi-Fi pass wifi_ssid + wifi_password; for Solana Pay pass a solana: URI as text. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

cron

cron_explain

Explain a cron expression in plain English and list its next N run times in any time zone — catch a schedule mistake before it fires at 3 am. Supports 5-field and 6-field (seconds) cron, ranges, steps, L/W/#, and nicknames (@daily, @hourly…). Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

hash

hash_encode

Hash data (SHA-256/512, SHA3, Keccak-256, BLAKE2, MD5, SHA-1, RIPEMD-160, HMAC) and convert between utf8, hex, base64, base64url and base58 — exact, in one call. Useful for signatures, content addressing, EVM selectors (keccak of a function signature), and decoding blobs agents are handed. Input can itself be hex/base64/base58. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

json

json_schema_validate

Validate JSON data against a JSON Schema (draft-07/2019-09/2020-12, formats like email/uri/date-time) and get every error with its exact path — check tool I/O before acting on it. Ajv, strict about types, all errors reported. Pass data and schema as JSON values (or JSON strings). Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

jwt

jwt_decode

Decode a JSON Web Token's header and claims, show issued/expiry times in plain dates and whether it has expired — optionally verify an HS256/384/512 signature with a secret. Decoding does not need the key. Never paste production secrets into third-party tools you do not trust; verification here is local and nothing is stored or logged. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

markdown

markdown_convert

Convert Markdown to clean HTML (GitHub-flavoured: tables, task lists, fenced code) or HTML back to Markdown. marked for md→html, Turndown for html→md. Scripts/styles are dropped on html→md. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

random

random_gen

Cryptographically secure randomness: UUID v4/v7, passwords, API-key-style tokens, integers in a range, dice, coin flips, or a fair shuffle / pick from a list. Node's CSPRNG. Output is generated fresh per call and never stored or logged. Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

unit

unit_convert

Convert between units of length, mass, volume, temperature, speed, area, time, data size, energy, power, pressure, frequency and more — or list every unit a value converts to. Exact conversion tables (convert-units). Use abbreviations: m, km, mi, ft, kg, lb, oz, l, gal, C, F, K, km/h, mph, knot, B, KB, MB, GB (binary, 1 GB = 1024 MB), J, kWh, W, Pa, bar, psi, Hz… Price: free. Errors: returns isError with a message for invalid input or an upstream failure (not charged).

Endpoints

URL	Transport	State	Latency	Checked
https://agent.maddegen.art/hub/mcp/util	streamable-http	answering	339 ms	7 min ago

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8 tools answering

MAD Synapse · Utils — questions

Answers built from our own checks of this server.

What can MAD Synapse · Utils do?

It exposes 10 tools, read directly from the server on our last check. Among them: cron_explain, hash_encode, json_schema_validate, jwt_decode, markdown_convert, qr_code and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is MAD Synapse · Utils working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 548 ms. The bar chart above shows every period we have measured.

How do I connect MAD Synapse · Utils?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MAD Synapse · Utils need an API key?

No. MAD Synapse · Utils completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MAD Synapse · Utils?

It answers our handshake in 548 ms on average, which is faster than 22% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.