# MAD Synapse · Utils (remote · agent.maddegen.art)

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

- Trust score: 65/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-29

## Components

- remote · `agent.maddegen.art`: 65/100 (this document), [markdown](https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util.md), [page](https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util)

## Channel facts

- Endpoint: `https://agent.maddegen.art/hub/mcp/util`
- Transports: `streamable-http`
- Auth: `none`
- Version: `2.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-29.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 41/100
  - 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2385 tokens (~216/item across 11 items; 10 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the MAD Synapse · Utils MCP server?

MAD Synapse · Utils is a hosted endpoint at https://agent.maddegen.art/hub/mcp/util, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

```json
{
  "servers": {
    "art-maddegen-agent-synapse-util": {
      "type": "http",
      "url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}
```

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "art-maddegen-agent-synapse-util": {
      "type": "remote",
      "url": "https://agent.maddegen.art/hub/mcp/util",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add art-maddegen-agent-synapse-util --url 'https://agent.maddegen.art/hub/mcp/util' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  art-maddegen-agent-synapse-util:
    url: "https://agent.maddegen.art/hub/mcp/util"
```

### Netclaw

```json
{
  "McpServers": {
    "art-maddegen-agent-synapse-util": {
      "Transport": "http",
      "Url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}
```

### Vellum

```bash
assistant mcp add art-maddegen-agent-synapse-util -t streamable-http -u 'https://agent.maddegen.art/hub/mcp/util'
```

### Other

```json
{
  "mcpServers": {
    "art-maddegen-agent-synapse-util": {
      "type": "http",
      "url": "https://agent.maddegen.art/hub/mcp/util"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-29 (score 65, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-28 (score 65)

First indexed and scored.

## MCP tools (10)

### `qr_code` (~327 tokens)

QR code generator

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).

Input parameters:

- `dark` (string): Foreground colour as #rrggbb. Default "#000000".
- `error_correction` (string): Error-correction level: L 7%, M 15%, Q 25%, H 30%. One of "L", "M", "Q", "H". Default "M".
- `format` (string): PNG (base64 data URL) or SVG markup. One of "png", "svg". Default "png".
- `light` (string): Background colour as #rrggbb. Default "#ffffff".
- `margin` (integer): Quiet-zone width in modules. Range 0-16. Default 2.
- `size` (integer): Image width/height in pixels. Range 64-2048. Default 512.
- `text` (string): Text or URL to encode (ignored when wifi_ssid is set).
- `wifi_password` (string): Wi-Fi password (with wifi_ssid; omit for open networks).
- `wifi_ssid` (string): Wi-Fi network name; makes a join-network QR instead of text.

Output parameters:

- `encoded` (string|null)
- `format` (string|null)
- `svg` (string|null)

### `hash_encode` (~264 tokens)

Hash + encode/decode

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).

Input parameters:

- `hashes` (array): sha256, sha512, sha3-256, sha3-512, keccak256, blake2b512, blake2s256, md5, sha1, ripemd160. 0-12 items. Default ["sha256","keccak256"].
- `hmac_key` (string): if set, HMAC instead of plain hash (utf8 key)
- `input` (string, required): Data to hash or re-encode.
- `input_encoding` (string): How the input string is encoded. One of "utf8", "hex", "base64", "base58". Default "utf8".

Output parameters:

- `bytes` (number|null)
- `encodings` (object|null)
- `hashes` (object|null)

### `json_schema_validate` (~157 tokens)

JSON Schema validator

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).

Input parameters:

- `data` (required): any JSON value (or a JSON string with parse_strings=true)
- `parse_strings` (boolean): true = if data is a string, parse it as JSON first. Default false.
- `schema` (object, required): The JSON Schema to validate against.

Output parameters:

- `error_count` (number|null)
- `errors` (array)
- `valid` (boolean|null)

### `cron_explain` (~174 tokens)

Cron expression explain + next runs

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).

Input parameters:

- `count` (integer): How many upcoming run times to list. Range 1-50. Default 5.
- `expression` (string, required): Cron expression, 5 fields (or 6 with seconds), e.g. "*/15 9-17 * * 1-5".
- `tz` (string): IANA time zone for the next-run times. Default "UTC".

Output parameters:

- `expression` (string|null)
- `meaning` (string|null)
- `next_runs` (array)
- `tz` (string|null)
- `valid` (boolean|null)

### `markdown_convert` (~113 tokens)

Markdown ⇄ HTML

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).

Input parameters:

- `input` (string, required): Markdown or HTML to convert.
- `to` (string): Target format. One of "html", "markdown". Default "html".

Output parameters:

- `output` (string|null)
- `to` (string|null)

### `text_diff` (~152 tokens)

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).

Input parameters:

- `a` (string, required): Original text.
- `b` (string, required): Changed text.
- `context` (integer): Unchanged lines of context around each change in the patch. Range 0-20. Default 3.
- `mode` (string): Diff granularity. One of "lines", "words". Default "lines".

Output parameters:

- `changes` (array)
- `chars_added` (number|null)
- `chars_removed` (number|null)
- `identical` (boolean|null)
- `similarity_pct` (number|null)
- `unified` (string|null)

### `unit_convert` (~196 tokens)

Unit converter

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).

Input parameters:

- `from` (string, required): Source unit, e.g. "mi", "kg", "degF", "GB".
- `to` (string): omit to get every compatible unit
- `value` (number, required): Number to convert.

Output parameters:

- `from` (string|null)
- `result` (number|null)
- `to` (string|null)
- `value` (number|null)

### `jwt_decode` (~138 tokens)

JWT decoder

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).

Input parameters:

- `secret` (string): optional HMAC secret to verify HS* signatures
- `token` (string, required): The JWT (three base64url parts). The signature is not verified.

Output parameters:

- `alg_none_warning`
- `expired` (boolean|null)
- `expires_at` (string|null)
- `header` (object|null)
- `issued_at` (string|null)
- `not_before`
- `payload` (object|null)
- `seconds_left` (number|null)
- `signature` (string|null)

### `random_gen` (~252 tokens)

Secure random + IDs

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).

Input parameters:

- `count` (integer): How many values to generate. Range 1-100. Default 1.
- `items` (array): List to shuffle or pick from (kind=shuffle or pick). 0-1000 items.
- `kind` (string): What to generate. One of "uuid4", "uuid7", "password", "token", "int", "shuffle", "pick", "coin", "dice". Default "uuid4".
- `length` (integer): Length for passwords and tokens. Range 4-256. Default 20.
- `max` (integer): Highest integer (kind=int). Default 100.
- `min` (integer): Lowest integer (kind=int or dice sides). Default 1.
- `symbols` (boolean): Include symbols in passwords. Default true.

Output parameters:

- `kind` (string|null)
- `result` (array)

### `text_stats` (~153 tokens)

Text stats + token estimate

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).

Input parameters:

- `extract` (boolean): true = if text is a URL, fetch the page and analyse its readable text. Default true.
- `text` (string, required): Text (or a URL when extract=true) to analyse.

Output parameters:

- `characters` (number|null)
- `characters_no_spaces` (number|null)
- `estimated_tokens` (number|null)
- `extracted` (object|null)
- `flesch_reading_ease` (number|null)
- `lines` (number|null)
- `paragraphs` (number|null)
- `readability` (string|null)
- `reading_minutes` (number|null)
- `sentences` (number|null)
- `words` (number|null)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util#diagnostics

## Score history

- 2026-09-29: 65
- 2026-09-28: 65

## Common questions

### What is the MAD Synapse · Utils MCP server?

MAD Synapse · Utils is an MCP server listed in the public MCP registry as art.maddegen.agent/synapse-util. Exact local utils: QR, hashing/encoding, JSON Schema, cron, markdown, diff, units, JWT, random. This page covers its hosted endpoint (https://agent.maddegen.art/hub/mcp/util).

### Is the MAD Synapse · Utils MCP server safe to use?

MAD Synapse · Utils scores 65 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the MAD Synapse · Utils MCP server expose?

MAD Synapse · Utils exposes 10 tools: qr_code, hash_encode, json_schema_validate, cron_explain, markdown_convert, and 5 more. Their descriptions and schemas cost roughly 1,926 tokens of context every time the server is loaded.

### Does the MAD Synapse · Utils MCP server require authentication?

No. We connected to MAD Synapse · Utils without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the MAD Synapse · Utils MCP server still maintained?

MAD Synapse · Utils is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://agent.maddegen.art/hub/mcp/util
- Website: https://agent.maddegen.art/hub
- Changelog RSS feed: https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util.xml
- Changelog JSON feed: https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util.json
- HTML version of this page: https://verifymcp.io/servers/art-maddegen-agent-synapse-util/hub-mcp-util