Package Exports

mcp-devutils
mcp-devutils/index.js

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Readme

mcp-devutils

An MCP (Model Context Protocol) server with developer utilities. Use it directly with Claude Desktop, Cursor, or any MCP-compatible client.

Tools

Tool	Description
`uuid`	Generate UUID v4 (up to 10 at once)
`hash`	Hash text with md5, sha1, or sha256
`base64`	Encode or decode base64
`timestamp`	Convert between Unix timestamps and ISO 8601
`jwt_decode`	Decode JWT token payload (no verification)
`random_string`	Generate random strings/passwords
`url_encode`	URL encode or decode strings
`json_format`	Pretty-print or minify JSON
`regex_test`	Test regex patterns against strings
`cron_explain`	Explain cron expressions in plain English + next 5 runs
`hmac`	Generate HMAC signatures (SHA-256, SHA-512, etc.)
`color_convert`	Convert colors between hex, RGB, and HSL
`semver_compare`	Compare two semantic versions

Installation

npm install -g mcp-devutils

Or use directly with npx:

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

Usage with Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "devutils": {
      "command": "mcp-devutils"
    }
  }
}

Or with npx (no install needed):

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

Usage with Cursor

Add to your Cursor MCP settings:

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

Tool Examples

uuid

Generate one or more UUIDs:

count: Number of UUIDs to generate (1–10, default: 1)

hash

Hash text with a chosen algorithm:

text: Text to hash (required)
algorithm: md5, sha1, or sha256 (default: sha256)

base64

Encode or decode base64:

text: Input text (required)
action: encode or decode (default: encode)

timestamp

Convert timestamps:

value: Unix timestamp or ISO date string (leave empty for current time)

jwt_decode

Decode a JWT without verifying the signature:

token: JWT string (required)
Returns header, payload, expiry info

random_string

Generate random strings:

length: String length (default: 16, max: 256)
charset: alphanumeric, alpha, numeric, hex, password, or url-safe

url_encode

Encode or decode URLs:

text: Input text (required)
action: encode or decode (default: encode)

json_format

Format or minify JSON:

json: JSON string (required)
action: format or minify (default: format)
indent: Spaces for indentation (default: 2)

regex_test

Test regex patterns:

pattern: Regex pattern (required)
text: String to test against (required)
flags: Regex flags like g, i, gi (optional)

cron_explain

Explain a cron expression in plain English and show the next 5 scheduled runs:

expression: 5-field cron expression (required), e.g. */15 9-17 * * 1-5

hmac

Generate an HMAC signature:

message: Message to sign (required)
key: Secret key (required)
algorithm: sha256, sha512, sha1, or md5 (default: sha256)
encoding: hex or base64 (default: hex)

color_convert

Convert colors between formats:

color: Color string (required) — accepts #ff5733, rgb(255,87,51), or hsl(11,100%,60%)
Returns all three formats

semver_compare

Compare two semantic versions:

version1: First version (required), e.g. 1.2.3
version2: Second version (required), e.g. 2.0.0
Returns comparison result and parsed components

License

MIT — Hong Teoh

Support

If this tool saves you time, consider buying me a coffee: buymeacoffee.com/gl89tu25lp