MCP AI Hub

A Model Context Protocol (MCP) server that provides unified access to various AI providers through LiteLM. Chat with OpenAI, Anthropic, and 100+ other AI models using a single, consistent interface.

🌟 Overview

MCP AI Hub acts as a bridge between MCP clients (like Claude Desktop/Code) and multiple AI providers. It leverages LiteLM's unified API to provide seamless access to 100+ AI models without requiring separate integrations for each provider.

Key Benefits:

• Unified Interface: Single API for all AI providers
• 100+ Providers: OpenAI, Anthropic, Google, Azure, AWS Bedrock, and more
• MCP Protocol: Native integration with Claude Desktop and Claude Code
• Flexible Configuration: YAML-based configuration with Pydantic validation
• Multiple Transports: stdio, SSE, and HTTP transport options
• Custom Endpoints: Support for proxy servers and local deployments

Quick Start

1. Install

Choose your preferred installation method:

# Option A: Install from PyPI
pip install mcp-ai-hub

# Option B: Install with uv (recommended)
uv tool install mcp-ai-hub

# Option C: Install from source
pip install git+https://github.com/your-username/mcp-ai-hub.git

Installation Notes:

• uv is a fast Python package installer and resolver
• The package requires Python 3.10 or higher
• All dependencies are automatically resolved and installed

2. Configure

Create a configuration file at ~/.ai_hub.yaml with your API keys and model configurations:

model_list:
  - model_name: gpt-4  # Friendly name you'll use in MCP tools
    litellm_params:
      model: openai/gpt-4  # LiteLM provider/model identifier
      api_key: "sk-your-openai-api-key-here"  # Your actual OpenAI API key
      max_tokens: 2048  # Maximum response tokens
      temperature: 0.7  # Response creativity (0.0-1.0)

  - model_name: claude-sonnet
    litellm_params:
      model: anthropic/claude-3-5-sonnet-20241022
      api_key: "sk-ant-your-anthropic-api-key-here"
      max_tokens: 4096
      temperature: 0.7

Configuration Guidelines:

• API Keys: Replace placeholder keys with your actual API keys
• Model Names: Use descriptive names you'll remember (e.g., gpt-4, claude-sonnet)
• LiteLM Models: Use LiteLM's provider/model format (e.g., openai/gpt-4, anthropic/claude-3-5-sonnet-20241022)
• Parameters: Configure max_tokens, temperature, and other LiteLM-supported parameters
• Security: Keep your config file secure with appropriate file permissions (chmod 600)

3. Connect to Claude Desktop

Configure Claude Desktop to use MCP AI Hub by editing your configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "ai-hub": {
      "command": "mcp-ai-hub"
    }
  }
}

4. Connect to Claude Code

claude mcp add -s user ai-hub mcp-ai-hub

Advanced Usage

CLI Options and Transport Types

MCP AI Hub supports multiple transport mechanisms for different use cases:

Command Line Options:

# Default stdio transport (for MCP clients like Claude Desktop)
mcp-ai-hub

# Server-Sent Events transport (for web applications)
mcp-ai-hub --transport sse --host 0.0.0.0 --port 3001

# Streamable HTTP transport (for direct API calls)
mcp-ai-hub --transport http --port 8080

# Custom config file and debug logging
mcp-ai-hub --config /path/to/config.yaml --log-level DEBUG

Transport Type Details:

CLI Arguments:

• --transport {stdio,sse,http}: Transport protocol (default: stdio)
• --host HOST: Host address for SSE/HTTP (default: localhost)
• --port PORT: Port number for SSE/HTTP (default: 3001; override if you need a different port)
• --config CONFIG: Custom config file path (default: ~/.ai_hub.yaml)
• --log-level {DEBUG,INFO,WARNING,ERROR}: Logging verbosity (default: INFO)

Usage

Once MCP AI Hub is connected to your MCP client, you can interact with AI models using these tools:

MCP Tool Reference

Primary Chat Tool:

chat(model_name: str, message: str | list[dict]) -> str

• model_name: Name of the configured model (e.g., "gpt-4", "claude-sonnet")
• message: String message or OpenAI-style message list
• Returns: AI model response as string

Model Discovery Tools:

list_models() -> list[str]

• Returns: List of all configured model names

get_model_info(model_name: str) -> dict

• model_name: Name of the configured model
• Returns: Model configuration details including provider, parameters, etc.

Configuration

MCP AI Hub supports 100+ AI providers through LiteLM. Configure your models in ~/.ai_hub.yaml with API keys and custom parameters.

System Prompts

You can define system prompts at two levels:

• global_system_prompt: Applied to all models by default
• Per-model system_prompt: Overrides the global prompt for that model

Precedence: model-specific prompt > global prompt. If a model's system_prompt is set to an empty string, it disables the global prompt for that model.

global_system_prompt: "You are a helpful AI assistant. Be concise."

model_list:
  - model_name: gpt-4
    system_prompt: "You are a precise coding assistant."
    litellm_params:
      model: openai/gpt-4
      api_key: "sk-your-openai-api-key"

  - model_name: claude-sonnet
    # Empty string disables the global prompt for this model
    system_prompt: ""
    litellm_params:
      model: anthropic/claude-3-5-sonnet-20241022
      api_key: "sk-ant-your-anthropic-api-key"

Notes:

• The server prepends the configured system prompt to the message list it sends to providers.
• If you pass an explicit message list that already contains a system message, both system messages will be included in order (configured prompt first).

Supported Providers

Major AI Providers:

• OpenAI: GPT-4, GPT-3.5-turbo, GPT-4-turbo, etc.
• Anthropic: Claude 3.5 Sonnet, Claude 3 Haiku, Claude 3 Opus
• Google: Gemini Pro, Gemini Pro Vision, Gemini Ultra
• Azure OpenAI: Azure-hosted OpenAI models
• AWS Bedrock: Claude, Llama, Jurassic, and more
• Together AI: Llama, Mistral, Falcon, and open-source models
• Hugging Face: Various open-source models
• Local Models: Ollama, LM Studio, and other local deployments

Configuration Parameters:

• api_key: Your provider API key (required)
• max_tokens: Maximum response tokens (optional)
• temperature: Response creativity 0.0-1.0 (optional)
• api_base: Custom endpoint URL (for proxies/local servers)
• Additional: All LiteLM-supported parameters

Configuration Examples

Basic Configuration:

global_system_prompt: "You are a helpful AI assistant. Be concise."

model_list:
  - model_name: gpt-4
    system_prompt: "You are a precise coding assistant."  # overrides global
    litellm_params:
      model: openai/gpt-4
      api_key: "sk-your-actual-openai-api-key"
      max_tokens: 2048
      temperature: 0.7

  - model_name: claude-sonnet
    litellm_params:
      model: anthropic/claude-3-5-sonnet-20241022
      api_key: "sk-ant-your-actual-anthropic-api-key"
      max_tokens: 4096
      temperature: 0.7

Custom Parameters:

model_list:
  - model_name: gpt-4-creative
    litellm_params:
      model: openai/gpt-4
      api_key: "sk-your-openai-key"
      max_tokens: 4096
      temperature: 0.9  # Higher creativity
      top_p: 0.95
      frequency_penalty: 0.1
      presence_penalty: 0.1

  - model_name: claude-analytical
    litellm_params:
      model: anthropic/claude-3-5-sonnet-20241022
      api_key: "sk-ant-your-anthropic-key"
      max_tokens: 8192
      temperature: 0.3  # Lower creativity for analytical tasks
      stop_sequences: ["

", "Human:"]

Local LLM Server Configuration:

model_list:
  - model_name: local-llama
    litellm_params:
      model: openai/llama-2-7b-chat
      api_key: "dummy-key"  # Local servers often accept any API key
      api_base: "http://localhost:8080/v1"  # Local OpenAI-compatible server
      max_tokens: 2048
      temperature: 0.7

For more providers, please refer to the LiteLLM docs: https://docs.litellm.ai/docs/providers.

Development

Setup:

# Install all dependencies including dev dependencies
uv sync

# Install package in development mode
uv pip install -e ".[dev]"

# Add new runtime dependencies
uv add package_name

# Add new development dependencies
uv add --dev package_name

# Update dependencies
uv sync --upgrade

Running and Testing:

# Run the MCP server
uv run mcp-ai-hub

# Run with custom configuration
uv run mcp-ai-hub --config ./custom_config.yaml --log-level DEBUG

# Run with different transport
uv run mcp-ai-hub --transport sse --port 3001

# Run tests (when test suite is added)
uv run pytest

# Run tests with coverage
uv run pytest --cov=src/mcp_

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