simplyutils-mcp

Everyday developer and text tools from SimplyUtils: JSON formatter, QR codes, unit converter, passwords, UUIDs, hashes, Base64, regex tester, timestamps and word counts. Free hosted endpoint, no API key, no AI calls.

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SimplyUtils MCP server

Everyday developer and text tools from SimplyUtils for Claude, ChatGPT, Cursor and any other Model Context Protocol client.

Ask things like "format this JSON", "make a QR code for https://example.com", "convert 5 miles to km" or "test this regex against my log line". The answers are computed directly: no AI calls, no external lookups, and nothing is stored. Each answer links to the matching free tool on simplyutils.com, where you can do more with it.

Tools

Tool	What it does	On the web
`format_json`	Validate, pretty-print or minify JSON, optionally sorting keys	JSON Formatter
`generate_qr_code`	Static QR code for a link or text, as PNG and SVG	QR Code Generator
`convert_units`	Length, weight, temperature, volume, speed, area, data and time	Unit Converter
`generate_password`	Cryptographically random passwords (8–128 characters)	Password Generator
`generate_uuid`	Random version 4 UUIDs	UUID Generator
`hash_text`	MD5, SHA-1, SHA-256, SHA-384, SHA-512 hex digests	Hash Generator
`base64`	Encode or decode UTF-8 text (standard or URL-safe)	Base64 Encoder
`test_regex`	Run a JavaScript regex and list matches and capture groups	Regex Tester
`convert_timestamp`	Unix seconds or milliseconds ↔ ISO 8601, UTC and any time zone	Timestamp Converter
`count_words`	Words, characters, sentences, paragraphs and reading time	Word Counter

All tools are read-only.

Connect

The hosted server is free to use at:

https://api.simplyutils.com/mcp

Claude (claude.ai and desktop): Settings → Connectors → Add custom connector, then paste the URL above.

Claude Code:

claude mcp add --transport http simplyutils https://api.simplyutils.com/mcp

ChatGPT: Settings → Apps & Connectors → enable developer mode → Create, then paste the URL above.

Cursor, VS Code and other clients (mcp.json):

{
  "mcpServers": {
    "simplyutils": { "url": "https://api.simplyutils.com/mcp" }
  }
}

Run it locally instead (no network needed after install):

{
  "mcpServers": {
    "simplyutils": { "command": "npx", "args": ["-y", "simplyutils-mcp"] }
  }
}

Limits

Text inputs up to 100 KB; QR content up to 800 bytes.
Regex patterns stop after 0.5 seconds and return at most 200 matches.
The hosted endpoint allows 60 requests per minute per IP address.

Privacy

Tool inputs are processed in memory to produce the answer and are not stored or logged by this server. The hosted endpoint runs on SimplyUtils infrastructure; see the SimplyUtils privacy policy.

Develop

npm install
npm test          # unit and end-to-end MCP tests
npm run build
npm start         # HTTP server on http://127.0.0.1:5016/mcp
npm run start:stdio