Mcp Server Devutils

@ofershap

About Mcp Server Devutils

Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex

Config

Add this server to your MCP-compatible client using the configuration below.

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

Tools

Encode a string to Base64

Decode a Base64 string

Generate one or more UUIDs (v4)

Generate a ULID (Universally Unique Lexicographically Sortable Identifier)

Hash a string using a specified algorithm. Supported: md5, sha1, sha256, sha384, sha512

Hash a string with all supported algorithms at once

Decode a JWT token (without verification) and show header, payload, expiry

Explain a cron expression in plain English

Validate a cron expression

Show the next N run times for a cron expression

Convert a Unix timestamp to ISO 8601 date string

Convert an ISO 8601 date string to Unix timestamp

Get the current time in multiple formats

Pretty-print / format a JSON string

Minify a JSON string (remove whitespace)

Validate a JSON string and report its type

Test a regular expression against a string

Overview

What is Mcp Server Devutils?

Mcp Server Devutils is an MCP server that provides 17 developer utilities—base64, UUID, JWT decode, cron, timestamps, JSON, and regex—for AI assistants. It works with Claude Desktop, Cursor, and VS Code Copilot, requires no API keys or external services, and runs via npx.

How to use Mcp Server Devutils?

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.

Key features of Mcp Server Devutils

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

Use cases of Mcp Server Devutils

Decode a JWT token to inspect its header, payload, and expiration
Explain a cron expression in plain English
Generate multiple UUIDs for identifiers
Hash a string with a specific algorithm
Convert a Unix timestamp to a human-readable date
Pretty-print or validate a JSON string

FAQ from Mcp Server Devutils

What tools are included?

The server includes 17 tools: base64_encode, base64_decode, uuid_generate, ulid_generate, hash, hash_all, jwt_decode, cron_explain, cron_validate, cron_next, timestamp_to_iso, iso_to_timestamp, timestamp_now, json_format, json_minify, json_validate, and regex_test.

Do I need an API key or external service?

No. The server runs entirely locally via npx and requires zero authentication. No API keys or external services are needed.

Which AI assistants are supported?

Mcp Server Devutils works with Claude Desktop, Cursor, and VS Code Copilot (via the MCP protocol).

How do I install and configure it?

No installation is required. Add the server to your client’s MCP configuration file with the command npx -y mcp-server-devutils. Examples for each client are provided in the README.

Is the project open source?

Yes, it is released under the MIT License.

Frequently asked questions

What tools are included?

The server includes 17 tools: `base64_encode`, `base64_decode`, `uuid_generate`, `ulid_generate`, `hash`, `hash_all`, `jwt_decode`, `cron_explain`, `cron_validate`, `cron_next`, `timestamp_to_iso`, `iso_to_timestamp`, `timestamp_now`, `json_format`, `json_minify`, `json_validate`, and `regex_test`.

Do I need an API key or external service?

No. The server runs entirely locally via `npx` and requires zero authentication. No API keys or external services are needed.

Which AI assistants are supported?

Mcp Server Devutils works with Claude Desktop, Cursor, and VS Code Copilot (via the MCP protocol).

How do I install and configure it?

No installation is required. Add the server to your client’s MCP configuration file with the command `npx -y mcp-server-devutils`. Examples for each client are provided in the README.

Is the project open source?

Yes, it is released under the MIT License.

Comments

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