Which clients are documented as compatible?

The README documents Claude Desktop, Cursor, and VS Code Copilot.

Can it verify JWT signatures?

The listed jwt_decode tool decodes the token's header, payload, and expiry; signature verification is not documented.

How is the server installed?

Run it with npx using the package mcp-server-devutils and the -y flag.

MCP Server Devutils

developer-toolsutilitiesjsoncryptographycron

Zero-auth MCP server providing 17 local utilities for encoding, hashing, JWTs, cron, timestamps, JSON, regex, UUIDs, and ULIDs.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

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

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Overview

MCP Server DevUtils gives AI assistants a collection of common developer utilities without API keys or external services. Use it for tasks such as decoding JWTs, generating identifiers, validating JSON, explaining cron expressions, converting timestamps, and testing regular expressions. It runs through npx and is documented for Claude Desktop, Cursor, and VS Code Copilot.

Use cases

Decode JWT headers, payloads, and expiry information

Generate UUIDs and ULIDs

Hash strings with common algorithms

Explain, validate, and calculate upcoming cron runs

Format, validate, and minify JSON

Key features

Base64 encoding and decoding

UUID v4 and ULID generation

MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashing

JWT decoding with expiry details

Cron explanation, validation, and next-run calculation

Timestamp, JSON, and regular-expression utilities

Capabilities & Tool Schemas (17)Self-reported

Inspect callable tools, capabilities, and parameters exposed to AI agents by MCP Server Devutils.

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

Documentation Overview

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.

Code

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.

MCP server devutils demo — JWT decode, UUID generation, and cron explanation in Claude Desktop

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:

config.json

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

With Cursor

Add to your .cursor/mcp.json:

config.json

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

With VS Code (Copilot)

Add to your .vscode/mcp.json:

config.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

Terminal

npm install
npm test
npm run build

Author

_{README built with README Builder}

License

MIT © Ofer Shapira

Read the full README →View source on GitHub →

Related MCP Servers

View all in Security View all alternatives

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars

Stargazers on the source repository.

npm downloads

276

Package downloads in the last 30 days.

Last commit

6mo ago

Most recent push to the default branch.

Tools exposed

Callable tools this server registers over MCP.

Directory activity

2 views

Config copies, upvotes, and views on AllMCPs.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about MCP Server Devutils

No. The README states that it requires no API keys or external services.

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Technical Specs & Signals

CategorySecurity

PricingFree

10/10 checks healthy over the last 30d

55Quality signal: Good · 55/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools27/30

Adoption & activity4/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 22d ago via OSV.dev · mcp-server-devutils (npm)

★ Featured

AllMCPs Server

The official MCP server for AllMCPs.com - submit and manage tools directly from your AI. The open directory for MCP servers. Connect Claude, Cursor, Windsurf, and AI agents to databases, tools, files, and APIs. Explore 10,000+ servers. AllMCPs is the premier, open directory for discovering, evaluating, and installing Model Context Protocol (MCP) servers to equip AI agents and LLMs with real-world superpowers.

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Explore more

More in 🔒 Security →Best MCP servers for Security →Alternatives to MCP Server Devutils →Install in Claude Desktop Install in Cursor Install in VS Code

MCP Server Devutils

developer-toolsutilitiesjsoncryptographycron

Zero-auth MCP server providing 17 local utilities for encoding, hashing, JWTs, cron, timestamps, JSON, regex, UUIDs, and ULIDs.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

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

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Overview

Use cases

Decode JWT headers, payloads, and expiry information

Generate UUIDs and ULIDs

Hash strings with common algorithms

Explain, validate, and calculate upcoming cron runs

Format, validate, and minify JSON

Key features

Base64 encoding and decoding

UUID v4 and ULID generation

MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashing

JWT decoding with expiry details

Cron explanation, validation, and next-run calculation

Timestamp, JSON, and regular-expression utilities

Capabilities & Tool Schemas (17)Self-reported

Inspect callable tools, capabilities, and parameters exposed to AI agents by MCP Server Devutils.

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

Documentation Overview

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.

Code

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.

MCP server devutils demo — JWT decode, UUID generation, and cron explanation in Claude Desktop

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:

config.json

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

With Cursor

Add to your .cursor/mcp.json:

config.json

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

With VS Code (Copilot)

Add to your .vscode/mcp.json:

config.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

Terminal

npm install
npm test
npm run build

Author

_{README built with README Builder}

License

Read the full README →View source on GitHub →

Related MCP Servers

View all in Security View all alternatives

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars

Stargazers on the source repository.

npm downloads

276

Package downloads in the last 30 days.

Last commit

6mo ago

Most recent push to the default branch.

Tools exposed

Callable tools this server registers over MCP.

Directory activity

2 views

Config copies, upvotes, and views on AllMCPs.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about MCP Server Devutils

No. The README states that it requires no API keys or external services.

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

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Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/ofershap-mcp-server-devutils?style=directory)](https://allmcps.com/mcp/ofershap-mcp-server-devutils)

HTML Embed

<a href="https://allmcps.com/mcp/ofershap-mcp-server-devutils"><img src="https://allmcps.com/api/badge/ofershap-mcp-server-devutils?style=directory" alt="MCP Server Devutils on AllMCPs" /></a>

Technical Specs & Signals

CategorySecurity

PricingFree

10/10 checks healthy over the last 30d

55Quality signal: Good · 55/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools27/30

Adoption & activity4/15

Community engagement0/10

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 22d ago via OSV.dev · mcp-server-devutils (npm)

★ Featured

AllMCPs Server

Explore Server →

Own this project?

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 🔒 Security →Best MCP servers for Security →Alternatives to MCP Server Devutils →Install in Claude Desktop Install in Cursor Install in VS Code