Second Opinion MCP

Get instant second opinions from multiple AI models (OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek, Mistral, Together AI, Cohere, Groq Fast & Perplexity) directly within Claude conversations.

🚀 What it does

This MCP server allows Claude to consult other AI models for different perspectives on:

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
Custom model access - Use any HuggingFace model via Inference API

✨ Version 3.0 Features & Improvements

🚀 Major Bug Fixes

Fixed HuggingFace Models: Completely rebuilt HuggingFace integration with advanced retry logic, better model format detection, and comprehensive error handling
Fixed Gemini Blank Responses: Enhanced Gemini conversation handling to prevent empty responses in long chats with smart fallback and retry mechanisms
Improved Error Handling: Better error messages with helpful suggestions for troubleshooting

🆕 New AI Platform Support

🤖 Mistral AI: Direct access to Mistral's latest models including mistral-large-latest and codestral-latest
🔗 Together AI: Access to 200+ open-source models with fast inference
🧠 Cohere: Enterprise-grade language models with Command R+ and Command R
⚡ Groq Fast: Ultra-fast inference API for lightning-quick responses
🔍 Perplexity AI: Web-connected AI with real-time search capabilities

🤖 HuggingFace Integration (Enhanced)

Access any of the 800,000+ models on HuggingFace Hub via their Inference API with improved reliability:

meta-llama/Llama-3.1-8B-Instruct - Fast and reliable
meta-llama/Llama-3.1-70B-Instruct - Powerful reasoning
mistralai/Mistral-7B-Instruct-v0.3 - Efficient French-developed model
Qwen/Qwen2.5-7B-Instruct - Alibaba's latest model

🧠 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 (Enhanced)

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, Mistral, and Perplexity"

🔧 Enhanced Performance

Longer responses: Increased max_tokens (4000 default) to prevent cut-off responses
Better error handling: More robust API interactions with exponential backoff
Conversation persistence: Enhanced memory management with better context handling
Smart retry logic: Automatic retries with progressive delays for better reliability

📋 Requirements

Python 3.8+
Claude Desktop
API keys for any combination of: OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek, Mistral, Together AI, Cohere, Groq Fast, Perplexity

🛠️ Installation

Clone the repository

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

Install dependencies
```
pip install -r requirements.txt
```
Get API Keys
- OpenAI: Get your key at platform.openai.com
- 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
- Mistral: Get your key at console.mistral.ai
- Together AI: Get your key at api.together.xyz
- Cohere: Get your key at dashboard.cohere.com
- Groq: Get your key at console.groq.com
- Perplexity: Get your key at perplexity.ai

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",
        "MISTRAL_API_KEY": "your_mistral_key_here",
        "TOGETHER_API_KEY": "your_together_key_here",
        "COHERE_API_KEY": "your_cohere_key_here",
        "GROQ_FAST_API_KEY": "your_groq_key_here",
        "PERPLEXITY_API_KEY": "your_perplexity_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.

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-20250522 - Most advanced Claude model
claude-4-sonnet-20250522 - 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 - Enhanced with better reliability)

meta-llama/Llama-3.1-8B-Instruct - Fast and reliable Meta model
meta-llama/Llama-3.1-70B-Instruct - Powerful reasoning model
mistralai/Mistral-7B-Instruct-v0.3 - Efficient French-developed model
Qwen/Qwen2.5-7B-Instruct - Alibaba's latest 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

Mistral AI (NEW)

mistral-large-latest - Most powerful Mistral model
mistral-small-latest - Fast and cost-effective
mistral-medium-latest - Balanced performance
codestral-latest - Specialized for code generation

Together AI (NEW - 200+ open-source models)

meta-llama/Llama-3.1-8B-Instruct-Turbo - Fast Llama turbo
meta-llama/Llama-3.1-70B-Instruct-Turbo - Powerful Llama turbo
meta-llama/Llama-3.1-405B-Instruct-Turbo - Largest Llama model
mistralai/Mixtral-8x7B-Instruct-v0.1 - Mixture of experts
Qwen/Qwen2.5-72B-Instruct-Turbo - Alibaba's fast model

Cohere (NEW - Enterprise-grade)

command-r-plus - Most capable Cohere model
command-r - Balanced performance model
command - Standard command model

Groq Fast (NEW - Ultra-fast inference)

llama-3.1-70b-versatile - Fast 70B Llama
llama-3.1-8b-instant - Lightning-fast 8B model
mixtral-8x7b-32768 - Fast Mixtral variant
gemma2-9b-it - Google's Gemma model

Perplexity AI (NEW - Web-connected)

llama-3.1-sonar-large-128k-online - Web search + large context
llama-3.1-sonar-small-128k-online - Web search + fast responses
llama-3.1-sonar-large-128k-chat - Pure chat without web
llama-3.1-sonar-small-128k-chat - Fast chat model

💡 Usage Examples

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-3.1-70B-Instruct on HuggingFace"

"What does DeepSeek-reasoner think about this math problem?"

"Ask Mistral-large-latest to review my code architecture"

"Get a fast response from Groq's llama-3.1-8b-instant model"

"Use Perplexity's web search to research the latest AI developments"

"What does Cohere's command-r-plus think about this business strategy?"

"Get Together AI's Llama-405B opinion on this complex problem"

"Start a group discussion about AI ethics with GPT-4.1, Claude-4, Mistral, and Perplexity"

"Cross-platform comparison of this algorithm across all 11 available platforms"

🔧 Available Tools

Single Model Opinions

get_openai_opinion - Get opinion from any OpenAI model
get_gemini_opinion - Get opinion from any Gemini model (enhanced with better conversation handling)
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 (enhanced with better reliability)
get_deepseek_opinion - Get opinion from DeepSeek models
get_mistral_opinion - Get opinion from Mistral AI models (NEW)
get_together_opinion - Get opinion from Together AI's 200+ models (NEW)
get_cohere_opinion - Get opinion from Cohere enterprise models (NEW)
get_groq_fast_opinion - Get ultra-fast responses from Groq (NEW)
get_perplexity_opinion - Get web-connected AI responses (NEW)

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 all 11 AI platforms: OpenAI, Gemini, Grok, Claude, HuggingFace, DeepSeek, Mistral, Together AI, Cohere, Groq Fast & Perplexity
group_discussion - Multi-round discussions between AI models with shared context (supports all platforms)

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 in v3.0

✅ Major Bug Fixes: Fixed HuggingFace empty responses and Gemini blank chat issues
✅ 5 New AI Platforms: Mistral AI, Together AI, Cohere, Groq Fast, Perplexity AI
✅ Enhanced HuggingFace: Completely rebuilt with advanced retry logic and better error handling
✅ Improved Gemini: Smart conversation handling prevents blank responses in long chats
✅ 11 Total Platforms: Now supporting 11 different AI platforms and 800,000+ models
✅ Ultra-Fast Inference: Groq Fast for lightning-quick responses
✅ Web-Connected AI: Perplexity AI with real-time search capabilities
✅ Enterprise Models: Cohere's command models for business use cases
✅ Better Error Messages: Helpful troubleshooting suggestions and model recommendations

🤝 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 🧠✨