Second Opinion

🚀 Second Opinion MCP

Get instant second opinions from multiple AI models (OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek & OpenRouter) directly within Claude conversations. This tool allows you to consult various AI models during your Claude interactions, offering diverse perspectives on coding, writing, problem - solving, and more.

🚀 Quick Start

This MCP server enables Claude to consult other AI models for different perspectives on various tasks:

• Coding problems: Compare approaches across models.
• Creative writing: Get diverse style feedback.
• Problem solving: Validate logic and reasoning.
• Cross - model analysis: See how different AIs tackle the same task.
• Group discussions: Host AI debates with multiple models (now with 2+ models!).
• Custom model access: Use any HuggingFace model via Inference API.
• 300+ OpenRouter models: Access any model through OpenRouter's unified API.

✨ Features

🌐 OpenRouter Integration (NEW!)

Access 300+ AI models through OpenRouter's unified API, including:

• anthropic/claude - 3 - 5 - sonnet: Latest Claude 3.5 Sonnet.
• openai/gpt - 4: GPT - 4 via OpenRouter.
• meta - llama/llama - 3.1 - 405b - instruct: Massive 405B Llama model.
• google/gemini - pro - 1.5: Gemini Pro 1.5.
• Any model available on OpenRouter.

🎭 Improved Group Discussions

• Reduced requirements: Now works with just 2+ models (previously required 3+).
• OpenRouter support: Include any OpenRouter model in discussions.
• HuggingFace standardization: Automatically uses Llama 3.3 70B for group discussions.
• Better participant filtering: Only uses available models automatically.

🤖 HuggingFace Integration

Access any of the 800,000+ models on HuggingFace Hub via their Inference API. Use cutting - edge open source models like:

• meta - llama/Llama - 3.3 - 70B - Instruct
• microsoft/DialoGPT - large
• Qwen/Qwen2.5 - 72B - Instruct

🧠 DeepSeek Models

Get opinions from DeepSeek's powerful reasoning models:

• deepseek - chat (DeepSeek - V3): Fast and efficient.
• deepseek - reasoner (DeepSeek - R1): Advanced reasoning.

🤔 Grok 3 Thinking

Access xAI's latest thinking models with enhanced reasoning:

• grok - 3: Latest flagship model.
• grok - 3 - thinking: Step - by - step reasoning model.
• grok - 3 - mini: Lightweight thinking model with reasoning_effort control.

🎭 Group Discussions

Start multi - AI discussions where models can see and respond to each other's input:

> "Start a group discussion about the future of AI with GPT - 4.1, Claude - 4, and Gemini"

🔧 Enhanced Performance

• Longer responses: Increased max_tokens (4000 default) to prevent cut - off responses.
• Better error handling: More robust API interactions.
• Conversation persistence: Enhanced memory management.

📦 Installation

Requirements

• Python 3.8+
• Claude Desktop
• API keys for any combination of: OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek, OpenRouter

Steps

1. Clone the repository

   git clone https://github.com/ProCreations - Official/second - opinion.git
   cd second - opinion
   

2. Install dependencies

   pip install -r requirements.txt
   

3. Get API Keys
   • OpenAI: Get your key at [platform.openai.com](https://platform.openai.com/api - keys).
   • Gemini: Get your key at aistudio.google.com.
   • Grok: Get your key at x.ai.
   • Claude: Get your key at anthropic.com.
   • HuggingFace: Get your key at huggingface.co.
   • DeepSeek: Get your key at [deepseek.com](https://api - docs.deepseek.com/).
   • OpenRouter: Get your key at openrouter.ai.
4. Configure Claude Desktop Add this to your Claude Desktop MCP configuration:

   {
     "mcpServers": {
       "second - opinion": {
         "command": "python3",
         "args": ["/path/to/your/main.py"],
         "env": {
           "OPENAI_API_KEY": "your_openai_key_here",
           "GEMINI_API_KEY": "your_gemini_key_here",
           "GROK_API_KEY": "your_grok_key_here",
           "CLAUDE_API_KEY": "your_claude_key_here",
           "HUGGINGFACE_API_KEY": "your_huggingface_key_here",
           "DEEPSEEK_API_KEY": "your_deepseek_key_here",
           "OPENROUTER_API_KEY": "your_openrouter_key_here"
         }
       }
     }
   }
   

   Note: You only need to add API keys for the services you want to use. Missing keys will simply disable those specific features.
5. Restart Claude Desktop

🎯 Available Models

OpenAI

• o4 - mini: Fast reasoning model.
• gpt - 4.1: Latest flagship model.
• gpt - 4o: Multimodal powerhouse.

Gemini

• gemini - 2.0 - flash - 001: Fast and efficient.
• gemini - 2.5 - flash - preview - 05 - 20: Advanced reasoning.

Grok

• grok - 3: Latest flagship model.
• grok - 3 - thinking: Step - by - step reasoning.
• grok - 3 - mini: Lightweight thinking model.
• grok - 2: Robust and reliable.
• grok - beta: Experimental features.

Claude

• claude - 4 - opus - 20250514: Most advanced Claude model.
• claude - 4 - sonnet - 20250514: Versatile model for general tasks.
• claude - 3 - 7 - sonnet - 20250224: Stable and reliable.
• claude - 3 - 5 - sonnet - 20241022: Efficient, lighter model.

HuggingFace (800,000+ models available)

• meta - llama/Llama - 3.3 - 70B - Instruct: Meta's latest Llama model.
• microsoft/DialoGPT - large: Conversational AI.
• microsoft/phi - 4: Microsoft's efficient reasoning model.
• deepseek - ai/DeepSeek - R1 - 0528 - Qwen3 - 8B: DeepSeek reasoning model.
• google/gemma - 3 - 27b - it: Google's Gemma instruction - tuned model.
• Qwen/Qwen3 - 235B - A22B: Alibaba's massive 235B parameter model.
• mistralai/Mistral - 7B - Instruct - v0.3: Mistral's instruction model.
• Any model on HuggingFace Hub that supports text generation.

DeepSeek

• deepseek - chat: DeepSeek - V3 for general tasks.
• deepseek - reasoner: DeepSeek - R1 for advanced reasoning.

OpenRouter (300+ models available)

• anthropic/claude - 3 - 5 - sonnet: Latest Claude 3.5 Sonnet.
• openai/gpt - 4: GPT - 4 via OpenRouter.
• meta - llama/llama - 3.1 - 405b - instruct: Massive 405B Llama model.
• google/gemini - pro - 1.5: Gemini Pro 1.5.
• mistralai/mistral - large - 2407: Mistral Large.
• qwen/qwen - 2.5 - 72b - instruct: Qwen 2.5 72B.
• Browse all 300+ models with the list_openrouter_models tool.

💻 Usage Examples

Basic Usage

Once configured, ask Claude things like:

> "Get a second opinion from GPT - 4.1 on this coding approach"
> "What would Grok - 3 - thinking think about this solution?"
> "Compare how Claude - 4 - opus and gemini - 2.0 - flash would solve this problem"
> "Get an opinion from meta - llama/Llama - 3.3 - 70B - Instruct on HuggingFace"
> "What does DeepSeek - reasoner think about this math problem?"
> "Get an opinion from anthropic/claude - 3 - 5 - sonnet on OpenRouter"
> "List all available OpenRouter models from Anthropic"
> "Start a group discussion about AI ethics with GPT - 4.1, Claude - 4, and meta - llama/llama - 3.1 - 405b - instruct on OpenRouter"
> "Start a group discussion about AI ethics with GPT - 4.1, Claude - 4, Gemini, and DeepSeek"
> "Cross - platform comparison of this algorithm across all available models"

🔧 Available Tools

Single Model Opinions

• get_openai_opinion: Get opinion from any OpenAI model.
• get_gemini_opinion: Get opinion from any Gemini model.
• get_grok_opinion: Get opinion from any Grok model (includes thinking models).
• get_claude_opinion: Get opinion from any Claude model.
• get_huggingface_opinion: Get opinion from any HuggingFace model.
• get_deepseek_opinion: Get opinion from DeepSeek models.
• get_openrouter_opinion: Get opinion from any OpenRouter model (300+ available).
• list_openrouter_models: Browse all available OpenRouter models.

Model Comparisons

• compare_openai_models: Compare multiple OpenAI models.
• compare_gemini_models: Compare multiple Gemini models.
• compare_grok_models: Compare multiple Grok models.
• compare_claude_models: Compare multiple Claude models.

Cross - Platform Features

• cross_platform_comparison: Compare across OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek & OpenRouter.
• group_discussion: Multi - round discussions between AI models with shared context (now supports 2+ models).

Conversation Management

• list_conversation_histories: See active conversation threads.
• clear_conversation_history: Reset conversation memory for specific models.

🧠 Advanced Features

Grok 3 Thinking Models

For deeper reasoning, use thinking models:

> "Get a Grok - 3 - thinking opinion on this complex math problem with high reasoning effort"

The reasoning_effort parameter controls thinking depth:

• low: Faster responses with basic reasoning.
• high: Deeper analysis with step - by - step thinking.

Group Discussions

Create AI debates and collaborative problem - solving:

> "Start a group discussion about renewable energy solutions with 3 rounds between GPT - 4.1, Claude - 4, Gemini, and DeepSeek"

Each AI can see previous responses and build on the discussion.

HuggingFace Model Access

Access cutting - edge open source models:

> "Get an opinion from microsoft/DialoGPT - large about chatbot design patterns"

Perfect for testing specialized models or comparing open source vs proprietary AI.

🔒 Security

Your API keys stay private on your machine. The MCP server only sends model responses to Claude, never your credentials.

🛟 Troubleshooting

• Import errors: Ensure you've installed all dependencies with pip install -r requirements.txt.
• API errors: Check that your API keys are correct and active.
• Server not connecting: Verify the file path in your MCP configuration.
• Cut - off responses: The new version uses 4000 max_tokens by default to prevent truncation.
• HuggingFace timeouts: Some models may take time to load. Try again after a few moments.
• Model not available: Check if the HuggingFace model supports text generation or chat completion.

🚀 What's New

v2.1

• ✅ OpenRouter Integration: Access 300+ AI models through unified API.
• ✅ Improved Group Discussions: Now works with just 2+ models (previously 3+).
• ✅ Smarter HuggingFace: Auto - uses Llama 3.3 70B for group discussions.
• ✅ Better Model Discovery: Browse OpenRouter's entire model catalog.
• ✅ Enhanced Participant Filtering: Only includes available models automatically.

v2.0

• ✅ HuggingFace Integration: Access 800,000+ open source models.
• ✅ DeepSeek Support: V3 and R1 reasoning models.
• ✅ Grok 3 Thinking: Advanced reasoning with controllable effort.
• ✅ Group Discussions: Multi - AI collaborative conversations.
• ✅ Enhanced Responses: 4x longer responses (4000 tokens default).
• ✅ Better Error Handling: More robust API interactions.
• ✅ Expanded Model Support: 6 AI platforms, 800,000+ models.

🤝 Contributing

Issues and pull requests welcome! This is an open - source project for the AI community.

Built for developers who want access to the entire AI ecosystem at their fingertips 🧠✨