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.

---

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" })

---

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" })

---

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!"

})

---

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

---

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.

---

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": "" })

---

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 |

---

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.

---

Rate Limits

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

---

License

MIT