Mcp Server Devutils
About
Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex
Details
- Author
- ofershap
- GitHub stars
- 3
- Downloads
- 237
- Categories
- Developer Tools
Jump to
- Base64 encode and decode
- UUID (v4) and ULID generation
- Hash strings with MD5, SHA-1, SHA-256, SHA-384, SHA-512
- Decode JWT tokens (header, payload, expiry)
- Explain, validate, and compute next runs for cron expressions
- Convert between Unix timestamps and ISO 8601
- Format, minify, and validate JSON
- Test regex patterns against strings
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
Mcp Server DevutilsCommand (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Add the server to your MCP client’s configuration file (e.g., claude_desktop_config.json, .cursor/mcp.json, or .vscode/mcp.json) using the command npx -y mcp-server-devutils. No installation or API keys are needed; your AI assistant can then invoke any of the 17 tools.
base64_encode
Encode a string to Base64
base64_decode
Decode a Base64 string
uuid_generate
Generate one or more UUIDs (v4)
ulid_generate
Generate a ULID (Universally Unique Lexicographically Sortable Identifier)
hash
Hash a string using a specified algorithm. Supported: md5, sha1, sha256, sha384, sha512
hash_all
Hash a string with all supported algorithms at once
jwt_decode
Decode a JWT token (without verification) and show header, payload, expiry
cron_explain
Explain a cron expression in plain English
cron_validate
Validate a cron expression
cron_next
Show the next N run times for a cron expression
timestamp_to_iso
Convert a Unix timestamp to ISO 8601 date string
iso_to_timestamp
Convert an ISO 8601 date string to Unix timestamp
timestamp_now
Get the current time in multiple formats
json_format
Pretty-print / format a JSON string
json_minify
Minify a JSON string (remove whitespace)
json_validate
Validate a JSON string and report its type
regex_test
Test a regular expression against a string
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"mcp server devutils": {
"devutils": {
"command": "npx",
"args": [
"-y",
"mcp-server-devutils"
]
}
}
}
}McpServers
{
"devutils": {
"command": "npx",
"args": [
"-y",
"mcp-server-devutils"
]
}
}MCP Server DevUtils — 17 Developer Tools for AI Assistants
An MCP server that gives your AI assistant 17 developer utilities — base64, UUID, JWT decode, cron, timestamps, JSON, regex. No API keys, no external services, just npx.
You: "Decode this JWT: eyJhbGci..."
AI: Header: { alg: "RS256" } Payload: { sub: "1234", exp: 1700000000 } Expired: yes
> Works with Claude Desktop, Cursor, and VS Code Copilot. Zero auth required.
Tools
| Tool | What it does |
| ------------------ | ------------------------------------------------- |
| base64_encode | Encode a string to Base64 |
| base64_decode | Decode a Base64 string |
| uuid_generate | Generate one or more UUIDs (v4) |
| ulid_generate | Generate a ULID |
| hash | Hash a string (md5, sha1, sha256, sha384, sha512) |
| hash_all | Hash with all algorithms at once |
| jwt_decode | Decode a JWT token (header, payload, expiry) |
| cron_explain | Explain a cron expression in plain English |
| cron_validate | Validate a cron expression |
| cron_next | Show next N run times for a cron expression |
| timestamp_to_iso | Convert Unix timestamp to ISO 8601 |
| iso_to_timestamp | Convert ISO 8601 to Unix timestamp |
| timestamp_now | Get current time in multiple formats |
| json_format | Pretty-print a JSON string |
| json_minify | Minify a JSON string |
| json_validate | Validate JSON and report its type |
| regex_test | Test a regex pattern against a string |
Quick Start
With Claude Desktop
Add to your claude_desktop_config.json:
{
"mcpServers": {
"devutils": {
"command": "npx",
"args": ["-y", "mcp-server-devutils"]
}
}
}
With Cursor
Add to your .cursor/mcp.json:
{
"mcpServers": {
"devutils": {
"command": "npx",
"args": ["-y", "mcp-server-devutils"]
}
}
}
With VS Code (Copilot)
Add to your .vscode/mcp.json:
{
"servers": {
"devutils": {
"command": "npx",
"args": ["-y", "mcp-server-devutils"]
}
}
}
Examples
Ask your AI assistant:
- "Decode this JWT token: eyJhbG..."
- "What does the cron expression 0 9 1-5 mean?"
- "Generate 5 UUIDs"
- "Hash this string with SHA-256: hello world"
- "Convert Unix timestamp 1700000000 to a date"
- "Format this JSON: {"a":1,"b":2}"
- "Test the regex \d{3}-\d{4} against '555-1234'"
Development
npm install
npm test
npm run build
Author
---
<sub>README built with README Builder</sub>
License
MIT © Ofer Shapira
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