MCP Developer Subagent

v1.0.0Coding Agentsstable

A specialized framework for Model Context Protocol (MCP) development featuring 8 Claude Code sub-agents, security hooks, and production-ready FastMCP server templates. Provides immediate MCP development assistance through markdown-driven agents with

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What is MCP Developer Subagent?

MCP Developer Subagent is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to specialized framework for model context protocol (mcp) development featuring 8 claude code sub-agents, security hooks, and production-ready fastmcp server templates. provides immediate mcp development...

A specialized framework for Model Context Protocol (MCP) development featuring 8 Claude Code sub-agents, security hooks, and production-ready FastMCP server templates. Provides immediate MCP development assistance through markdown-driven agents with

This server falls under the Coding Agents category on MCPgee, the world's largest MCP server directory with 33,000+ servers.

Features

  • A specialized framework for Model Context Protocol (MCP) dev

Use Cases

Access 8 Claude Code sub-agents for rapid MCP development.
Use markdown-driven agents with security hooks for safe automation.
Deploy production-ready FastMCP server templates instantly.
gensecaihq

Maintainer

LicenseMIT
Languagepython
Versionv1.0.0
UpdatedMay 3, 2026
Statushealthy
Maintenanceactive

Works with

ClaudeOpenAIwindowsmacoslinux

Installation

Manual Installation

npx mcp-developer-subagent

Configuration

Configuration Details

Config File

claude_desktop_config.json

Performance

Response Metrics

Response Time< 200ms
ThroughputMedium

Resource Usage

Memory UsageLow
CPU UsageLow

How to Set Up and Use MCP Developer Subagent

MCP Developer Subagent is a specialized Python framework for accelerating MCP server development using 8 Claude Code sub-agents, each focused on a distinct aspect of the development lifecycle: orchestration, FastMCP implementation, protocol specification, security and authentication, performance optimization, deployment, troubleshooting, and context management. It includes production-ready FastMCP server templates and Claude Code security hooks, enabling developers to generate, review, and deploy MCP servers through AI-assisted workflows without starting from scratch.

Prerequisites

  • Python 3.8 or higher installed
  • An Anthropic API key (set as ANTHROPIC_API_KEY) for CLI validation and sub-agent features
  • Claude Code installed (optional but required for sub-agent features)
  • Git for cloning the repository
  • pip for installing Python dependencies
1

Clone the repository

Clone the MCP Developer SubAgent repository from GitHub.

git clone https://github.com/gensecaihq/MCP-Developer-SubAgent.git
cd MCP-Developer-SubAgent
2

Set your Anthropic API key

Export your Anthropic API key as an environment variable. This is needed for the CLI validation tool and sub-agent features.

# macOS/Linux
export ANTHROPIC_API_KEY=sk-ant-your-key-here

# Windows PowerShell
$env:ANTHROPIC_API_KEY="sk-ant-your-key-here"

# Windows Command Prompt
set ANTHROPIC_API_KEY=sk-ant-your-key-here
3

Validate your setup

Run the built-in setup validation to confirm all dependencies and configurations are correct.

python3 claude_code_sdk/cli_simple.py validate-setup
4

Install the package

Install in editable mode. Use the [auth] extra if you need authentication support in generated servers.

pip install -e .
# or with optional auth support:
pip install -e .[auth]
5

Add the MCP server to your client config

Register the server with Claude Desktop or Claude Code to access the sub-agent capabilities through your AI client.

{
  "mcpServers": {
    "mcp-developer-subagent": {
      "command": "python3",
      "args": ["/path/to/MCP-Developer-SubAgent/main.py"],
      "env": {
        "ANTHROPIC_API_KEY": "sk-ant-your-key-here"
      }
    }
  }
}
6

Generate a FastMCP server using the sub-agents

Use the orchestrator to request a new MCP server. Provide a JSON task describing the tools, transport, and auth requirements.

python3 claude_code_sdk/cli_simple.py validate-setup
# Then ask Claude: "Generate a FastMCP server with a weather tool and API key authentication"

MCP Developer Subagent Examples

Client configuration

Claude Desktop config for the MCP Developer SubAgent, using Python to run the server directly.

{
  "mcpServers": {
    "mcp-developer-subagent": {
      "command": "python3",
      "args": ["/path/to/MCP-Developer-SubAgent/main.py"],
      "env": {
        "ANTHROPIC_API_KEY": "sk-ant-your-key-here"
      }
    }
  }
}

Prompts to try

Example prompts to use once the MCP Developer SubAgent is connected in Claude.

- "Generate a FastMCP server that exposes a tool to query a PostgreSQL database"
- "Review my MCP server code for security vulnerabilities using the security sub-agent"
- "Create a production-ready FastMCP template with JWT authentication and rate limiting"
- "Debug why my MCP tool is returning malformed responses"
- "Optimize my MCP server for high-throughput concurrent tool calls"

Troubleshooting MCP Developer Subagent

validate-setup reports missing dependencies

Run 'pip install -e .' from the project root to install all 12 required Python dependencies. Check INSTALL.md for platform-specific guidance on macOS, Windows, and Linux if pip install fails.

Sub-agent features are unavailable (Claude Code not detected)

Install Claude Code following the official Anthropic instructions and ensure the 'claude' command is available in your PATH. Sub-agent delegation requires Claude Code to be installed and authenticated.

ANTHROPIC_API_KEY is not recognized

Make sure the environment variable is exported in your shell session before running any commands. On macOS/Linux, add 'export ANTHROPIC_API_KEY=sk-ant-...' to your ~/.zshrc or ~/.bashrc and restart your terminal.

Frequently Asked Questions about MCP Developer Subagent

What is MCP Developer Subagent?

MCP Developer Subagent is a Model Context Protocol (MCP) server that specialized framework for model context protocol (mcp) development featuring 8 claude code sub-agents, security hooks, and production-ready fastmcp server templates. provides immediate mcp development assistance through markdown-driven agents with It connects AI assistants to external tools and data sources through a standardized interface.

How do I install MCP Developer Subagent?

Follow the installation instructions on the MCP Developer Subagent GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.

Which AI clients work with MCP Developer Subagent?

MCP Developer Subagent works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.

Is MCP Developer Subagent free to use?

Yes, MCP Developer Subagent is open source and available under the MIT license. You can use it freely in both personal and commercial projects.

Browse More Coding Agents MCP Servers

Explore all coding agents servers available in the MCPgee directory. Each server includes setup guides for Claude, Cursor, and VS Code.

Quick Config Preview

{ "mcpServers": { "mcp-developer-subagent": { "command": "npx", "args": ["-y", "mcp-developer-subagent"] } } }

Add this to your claude_desktop_config.json or .cursor/mcp.json

Read the full setup guide →

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