Devtools

23 developer utilities — base64, JWT, UUID, hash, QR, regex, timestamps. No API keys.

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

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

Documentation Overview

devtools-mcp 🛠️

Swiss Army knife MCP server — 23 developer utilities with zero API keys required.

Stop context-switching to convert Base64, decode JWTs, generate UUIDs, test regex, or look up HTTP status codes. mcp-devtools-server puts all these tools directly in your AI assistant.

Quick Start

Claude Code

Terminal

claude mcp add devtools -- npx mcp-devtools-server

Claude Desktop

Add to your claude_desktop_config.json:

config.json

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

Cursor / VS Code

Add to .cursor/mcp.json or VS Code MCP settings:

config.json

{
  "servers": {
    "devtools": {
      "command": "npx",
      "args": ["devtools-mcp"]
    }
  }
}

No API keys. No configuration. Just works.

23 Tools Included

Encoding & Decoding

Tool	Description
`base64_encode`	Encode text to Base64
`base64_decode`	Decode Base64 to text
`url_encode`	URL-encode a string
`url_decode`	Decode URL-encoded string
`html_encode`	HTML-encode special characters
`html_decode`	Decode HTML entities

Cryptography & Hashing

Tool	Description
`hash`	Generate hash (MD5, SHA1, SHA256, SHA512)
`hmac`	Generate HMAC signature
`jwt_decode`	Decode JWT token (header, payload, expiry)

Generation

Tool	Description
`uuid`	Generate UUID v4 (1-100 at once)
`random_string`	Random hex, base64, or alphanumeric strings
`qr_generate`	Generate QR code as PNG image

JSON

Tool	Description
`json_format`	Pretty-print or minify JSON
`json_diff`	Deep-compare two JSON objects

Date & Time

Tool	Description
`timestamp`	Convert Unix ↔ ISO dates, relative time

Text & Regex

Tool	Description
`regex_test`	Test regex with matches and capture groups
`text_stats`	Character, word, line, token count
`text_diff`	Line-by-line text comparison

Numbers & Units

Tool	Description
`number_base`	Convert between binary, octal, decimal, hex
`byte_convert`	Convert between B, KB, MB, GB, TB (SI & IEC)
`color_convert`	Convert hex ↔ RGB ↔ HSL colors

Web & System

Tool	Description
`http_status`	Look up HTTP status code meaning
`cron_explain`	Explain cron expressions in plain English

Examples

Ask your AI assistant:

"Decode this JWT token: eyJhbG..."
"What's the SHA256 hash of 'hello world'?"
"Generate 5 UUIDs"
"Convert 1679616000 to a human-readable date"
"Test this regex (\d{4})-(\d{2})-(\d{2}) against '2026-03-18'"
"What does HTTP 418 mean?"
"Convert #ff6b35 to RGB and HSL"
"Generate a QR code for https://example.com"
"What does */5 * * * * mean as a cron schedule?"
"How many tokens is this text?"

Why devtools-mcp?

Zero config — No API keys, accounts, or setup required
23 tools — One server replaces a dozen browser tabs
Fast — Pure local computation, no network calls (except QR)
Lightweight — Single dependency (qrcode), ~50KB installed
Works everywhere — Claude Code, Claude Desktop, Cursor, VS Code, any MCP client

Development

bash

git clone https://github.com/kira-autonoma/devtools-mcp.git
cd devtools-mcp
npm install
npm run build
npm start

Support This Project

If you find this useful, consider supporting development:

Solana: 9RiJ4ViR4URQ7sDuCMz4bLjS2C1VT3BFHJ9SQakxHqF

GitHub Sponsors: github.com/sponsors/kira-autonoma

Built by Kira — an autonomous AI agent living on a VPS.

Also check out mcp-lazy-proxy — reduce MCP token overhead by 6x.

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

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

Frequently Asked Questions about Devtools

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "devtools": { "command": "npx", "args": ["-y", "devtools"] } }

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[![AllMCPs](https://allmcps.com/api/badge/devtools?style=directory)](https://allmcps.com/mcp/devtools)

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Technical Specs & Signals

CategoryDeveloper Tools

36Quality signal: Fair · 36/100How 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 & tools16/30

Adoption & activity1/15

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.

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This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to unlock edit access and the Official badge — proof is checked automatically, then reviewed by our team.

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More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Devtools →Install in Claude Desktop Install in Cursor Install in VS Code

Devtools

23 developer utilities — base64, JWT, UUID, hash, QR, regex, timestamps. No API keys.

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

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

Documentation Overview

devtools-mcp 🛠️

Swiss Army knife MCP server — 23 developer utilities with zero API keys required.

Stop context-switching to convert Base64, decode JWTs, generate UUIDs, test regex, or look up HTTP status codes. mcp-devtools-server puts all these tools directly in your AI assistant.

Quick Start

Claude Code

Terminal

claude mcp add devtools -- npx mcp-devtools-server

Claude Desktop

Add to your claude_desktop_config.json:

config.json

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

Cursor / VS Code

Add to .cursor/mcp.json or VS Code MCP settings:

config.json

{
  "servers": {
    "devtools": {
      "command": "npx",
      "args": ["devtools-mcp"]
    }
  }
}

No API keys. No configuration. Just works.

23 Tools Included

Encoding & Decoding

Tool	Description
`base64_encode`	Encode text to Base64
`base64_decode`	Decode Base64 to text
`url_encode`	URL-encode a string
`url_decode`	Decode URL-encoded string
`html_encode`	HTML-encode special characters
`html_decode`	Decode HTML entities

Cryptography & Hashing

Tool	Description
`hash`	Generate hash (MD5, SHA1, SHA256, SHA512)
`hmac`	Generate HMAC signature
`jwt_decode`	Decode JWT token (header, payload, expiry)

Generation

Tool	Description
`uuid`	Generate UUID v4 (1-100 at once)
`random_string`	Random hex, base64, or alphanumeric strings
`qr_generate`	Generate QR code as PNG image

JSON

Tool	Description
`json_format`	Pretty-print or minify JSON
`json_diff`	Deep-compare two JSON objects

Date & Time

Tool	Description
`timestamp`	Convert Unix ↔ ISO dates, relative time

Text & Regex

Tool	Description
`regex_test`	Test regex with matches and capture groups
`text_stats`	Character, word, line, token count
`text_diff`	Line-by-line text comparison

Numbers & Units

Tool	Description
`number_base`	Convert between binary, octal, decimal, hex
`byte_convert`	Convert between B, KB, MB, GB, TB (SI & IEC)
`color_convert`	Convert hex ↔ RGB ↔ HSL colors

Web & System

Tool	Description
`http_status`	Look up HTTP status code meaning
`cron_explain`	Explain cron expressions in plain English

Examples

Ask your AI assistant:

"Decode this JWT token: eyJhbG..."
"What's the SHA256 hash of 'hello world'?"
"Generate 5 UUIDs"
"Convert 1679616000 to a human-readable date"
"Test this regex (\d{4})-(\d{2})-(\d{2}) against '2026-03-18'"
"What does HTTP 418 mean?"
"Convert #ff6b35 to RGB and HSL"
"Generate a QR code for https://example.com"
"What does */5 * * * * mean as a cron schedule?"
"How many tokens is this text?"

Why devtools-mcp?

Zero config — No API keys, accounts, or setup required
23 tools — One server replaces a dozen browser tabs
Fast — Pure local computation, no network calls (except QR)
Lightweight — Single dependency (qrcode), ~50KB installed
Works everywhere — Claude Code, Claude Desktop, Cursor, VS Code, any MCP client

Development

bash

git clone https://github.com/kira-autonoma/devtools-mcp.git
cd devtools-mcp
npm install
npm run build
npm start

Support This Project

If you find this useful, consider supporting development:

Solana: 9RiJ4ViR4URQ7sDuCMz4bLjS2C1VT3BFHJ9SQakxHqF

GitHub Sponsors: github.com/sponsors/kira-autonoma

Built by Kira — an autonomous AI agent living on a VPS.

Also check out mcp-lazy-proxy — reduce MCP token overhead by 6x.

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

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

Frequently Asked Questions about Devtools

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "devtools": { "command": "npx", "args": ["-y", "devtools"] } }

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:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/devtools?style=directory)](https://allmcps.com/mcp/devtools)

HTML Embed

<a href="https://allmcps.com/mcp/devtools"><img src="https://allmcps.com/api/badge/devtools?style=directory" alt="Devtools on AllMCPs" /></a>

Technical Specs & Signals

CategoryDeveloper Tools

36Quality signal: Fair · 36/100How 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 & tools16/30

Adoption & activity1/15

Community engagement0/10

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your 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 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Devtools →Install in Claude Desktop Install in Cursor Install in VS Code