mcp-devkit

15 zero-config developer utilities for Claude Desktop, Cursor, and any MCP client. Free. MIT.

All the small dev utilities you keep alt-tabbing for, in one MCP server. Drop into Claude Desktop in 30 seconds. No API keys. No paywall. No telemetry.

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Install

Option 1: Claude Desktop (recommended)

1. Open Claude Desktop → Settings → Extensions → Browse extensions
2. Search "Dev Kit" → Install
3. Done. Tools are available in any chat.

Option 2: Manual stdio config

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "devkit": {
      "command": "npx",
      "args": ["-y", "@dpm-tools/mcp-devkit"]
    }
  }
}

Or clone and run locally:

git clone https://github.com/jeffereychown-Max/mcp-devkit.git
cd mcp-devkit && npm install
node --experimental-strip-types src/index.ts

Requires Node.js 22.18+ (for native TypeScript support).

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Tools (15)

Crypto

• uuid — Generate UUID v4 or v7. Optional batch count.
• hash — md5 / sha1 / sha256 / sha512 of any text.
• hmac — HMAC signature with secret.

Encoding

• base64_encode / base64_decode — Standard or URL-safe.
• url_encode / url_decode — RFC 3986 percent encoding.
• jwt_decode — Header + payload. Optional signature verification with secret.

Data

• json_format — pretty / minify / sort keys.
• yaml_to_json / json_to_yaml — Round-trip safe.

Time

• cron_explain — "0 9 * * 1" → "Runs at 09:00 on Mon".
• timestamp_convert — Unix ↔ ISO 8601 in any IANA timezone.

Misc

• color_convert — hex ↔ rgb ↔ hsl.
• slugify — Any string → URL-safe slug.
• password_generate — Cryptographically random, configurable policy.
• lorem_ipsum — Words, sentences, or paragraphs.

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Example prompts

Once installed, just ask Claude naturally:

• "Generate 5 UUIDs."
• "What's the SHA-256 of this string: hello world?"
• "Decode this JWT: eyJhbGciOiJI..."
• *"Explain this cron: 0 */6 * * "
• "Convert 1715890800 to ISO time in America/Toronto."
• "Generate a 32-char password without symbols."
• "Convert this YAML to JSON: ..."
• "What is #ff5722 in HSL?"
• "Slugify 'My Awesome Blog Post 2026!'"

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Why?

Modern devs paste curl output into Claude. Then they alt-tab to DevUtils.app for a hash. Then to a tab for a UUID. Then to a JWT debugger. Then back.

mcp-devkit keeps them in one place. Free, MIT, audited, with simple LLM-facing tool descriptions. No paywall (looking at you, $9-19/mo competitors).

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What's next

• v0.2: Add unit tests, GitHub Actions CI.
• v0.3: WHOIS, DNS query, JSON schema validate.
• v1.0: Full coverage + i18n.

PRs welcome. Issues welcome.

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Sister servers from dpm

• mcp-public-data — Sun, moon, holidays, timezone, geocoding (zero API keys, like this one).

More coming. Follow the dpm catalog at github.com/jeffereychown-Max for updates.

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License

MIT © dpm (digital product mill)