Devutils
Developer utilities MCP: base64, UUID, hash, JWT decode, cron, timestamps.
Runs on your machine from its package; the steps are below.
What it does
- Reads
- Writes
- High impact
At most: only reads or looks up information.
What it costs
FreeOdel charges nothing per call. The publisher may charge for its own service.
Runs locally over stdio
This server isn't hosted — your MCP client launches it from a package registry. Use one of the commands below, or drop the config into your client (e.g. Claude Desktop).
Run
npx -y mcp-server-devutils
MCP client config
{
"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 * * 1-5mean?" - "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
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