D3vtools

D3vTools MCP Server

A Model Context Protocol (MCP) server that provides AI agents with access to 100+ developer utilities — encoders, decoders, color converters, cryptographic tools, formatters, and more. Built for AI coding assistants that need to transform data, inspect formats, or convert between units during development.

The MCP server runs at https://d3v.tools/mcp/tools with streamable-http transport. No authentication is required.

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Tools

This server exposes 3 tools that work together as a discover-execute pipeline:

list_tools_catalog

List all available tools with optional filtering by category, tier (free/premium), or slug.

Parameters:

Name	Type	Required	Description
category	string	no	Filter by category slug (e.g. encode-decode, color, crypto)
tier	string	no	Filter by tier (free or premium)
slug	string	no	Filter by specific tool slug

Example:

list tools in the "color" category → list_tools_catalog({ "category": "color" })

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get_tool_details

Get the full API contract — required fields, input type, rate limits, and keywords — for one tool.

Parameters:

Name	Type	Required	Description
category	string	yes	Tool category slug
slug	string	yes	Tool slug

Example:

inspect a tool → get_tool_details({ "category": "encode-decode", "slug": "base64-encode" })

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execute_tool

Execute a tool with input and optional parameters. Supports text inputs, conversion-style (from/to), and structured options.

Parameters:

Name	Type	Required	Description
category	string	yes	Tool category slug
slug	string	yes	Tool slug
input	string	no	Primary input value
options	object	no	Structured arguments for complex tools
from	string	no	Source unit (conversion tools)
to	string	no	Destination unit (conversion tools)
value	string	no	Value for conversion (used with from/to)

Example:

encode text → execute_tool({
  "category": "encode-decode",
  "slug": "base64-encode",
  "input": "Hello, World!"
})

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Usage Flow

The tools are designed to be chained:

1. Discover — call list_tools_catalog to see available tools
2. Inspect — call get_tool_details to learn a tool's API contract
3. Execute — call execute_tool to run the tool with your input

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Connecting

Server Details

Property	Value
URL	https://d3v.tools/mcp/tools
Transport	streamable-http
Authentication	None
Capabilities	tools

Client Configurations

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "d3vtools": {
      "url": "https://d3v.tools/mcp/tools",
      "transport": "streamable-http"
    }
  }
}

OpenCode

Add to your opencode.json:

{
  "mcpServers": {
    "d3vtools": {
      "url": "https://d3v.tools/mcp/tools",
      "transport": "streamable-http"
    }
  }
}

Cursor

Add in Cursor Settings → MCP Servers:

{
  "mcpServers": {
    "d3vtools": {
      "url": "https://d3v.tools/mcp/tools",
      "transport": "streamable-http"
    }
  }
}

Auto-Discovery

The server is advertised via .well-known/mcp.json at https://d3v.tools/.well-known/mcp.json, so MCP-aware clients (VS Code extension, etc.) can discover it automatically.

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Example Walkthrough

// Step 1: Find available tools
→ list_tools_catalog({ "category": "crypto" })

// Step 2: Get details on a specific tool
→ get_tool_details({ "category": "crypto", "slug": "uuid-generator" })

// Step 3: Execute the tool
→ execute_tool({ "category": "crypto", "slug": "uuid-generator", "input": "" })

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Supported Categories

Category	Examples
encode-decode	Base32, Base58, Base64, URL, HTML, JWT, QR code
color	Hex to RGB, RGB to HSL, color name lookup
crypto	UUID, hash generators, HMAC, password generators
formatter	JSON, XML, CSS, SQL formatters / minifiers
converter	Temperature, length, weight, currency
text	Character counter, case converter, slugify
image	Data URI conversion, SVG optimization
math	Number base converter, percentage calculator
network	IP calculator, port checker
date	Timestamp converter, timezone converter

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Architecture

┌──────────────┐     Streamable HTTP      ┌──────────────────────┐
│  AI Agent    │ ◄──────────────────────► │  d3v.tools/mcp/tools │
│  (Claude,    │                           │                      │
│   Cursor,    │   list_tools_catalog      │  Laravel + laravel/  │
│   OpenCode)  │   get_tool_details        │  mcp package         │
│              │   execute_tool            │                      │
└──────────────┘                           └──────────┬───────────┘
                                                       │
                                                        └──► ToolExecutionService
                                                             └──► Service classes
                                                                   (client-side JS
                                                                    or server-side PHP)

The server is built with Laravel and the laravel/mcp package. Client-side tools run in-browser JavaScript; server-side tools use PHP service classes. All processing happens on the server or client side — no external API calls.

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Rate Limits

Tier	Requests/minute
Anonymous	10
Registered (free)	30
Premium	1000+

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License

MIT