What is Second Opinion

Second-opinion is an MCP server that allows Claude to access multiple AI models, including OpenAI, Gemini, Grok, and Claude, to obtain diverse perspectives on various tasks.

Use cases

Use cases include comparing coding solutions from different AI models, obtaining varied writing styles for creative projects, validating problem-solving approaches, and analyzing how different AIs tackle similar challenges.

How to use

To use second-opinion, clone the repository, install the required dependencies, obtain API keys for the AI models, and configure Claude Desktop to include the second-opinion MCP server in its settings.

Key features

Key features include instant access to multiple AI models for coding problems, creative writing feedback, problem-solving validation, and cross-model analysis to compare how different AIs approach the same task.

Where to use

Second-opinion can be used in fields such as software development for coding assistance, creative industries for writing and content creation, and any domain requiring logical reasoning and problem-solving.

Second Opinion MCP

Get instant second opinions from multiple AI models including local, cloud, and enterprise services directly within Claude conversations.

Supported Platforms (25+ Services):

• Local AI: Ollama, LM Studio
• Cloud Services: OpenAI, Gemini, Grok, Claude, Azure OpenAI, AWS Bedrock, Vertex AI
• Specialized Services: Mistral, Together AI, Cohere, Groq, Perplexity, Writer.com, HuggingFace
• Enterprise Services: AI21, Stability AI, Fireworks AI, Anyscale, OpenRouter, DeepSeek
• Emerging Platforms: Moonshot AI, 01.AI (Yi models), Baichuan AI, Replicate

🚀 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 4.0 Features & Improvements

🚀 Major New Platform Integrations

• 🎭 Replicate: Access to open-source models including Llama 2, CodeLlama, Mistral, and more
• 🌟 AI21 Labs: Jamba 1.5 models with advanced reasoning capabilities
• 🎨 Stability AI: StableLM models including code-specialized variants
• 🔥 Fireworks AI: Ultra-fast inference for popular open-source models
• 🚀 Anyscale: Ray-powered LLM serving with enterprise-grade reliability

🆕 Enhanced Existing 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

🔧 Previous Bug Fixes (v3.0)

• 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

🤖 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 the 25+ supported services:
  • Required for local: Ollama server or LM Studio running locally
  • Cloud APIs: OpenAI, Gemini, Grok, Claude, Azure OpenAI, AWS credentials, GCP credentials
  • Specialized APIs: Mistral, Together AI, Cohere, Groq, Perplexity, Writer.com, HuggingFace
  • Enterprise APIs: AI21, Stability AI, Fireworks AI, Anyscale, OpenRouter, DeepSeek
  • Emerging APIs: Moonshot AI, 01.AI, Baichuan AI, Replicate

🛠️ Installation

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 (Optional - choose which services you want to use)

   Core AI Services:

   • OpenAI: platform.openai.com
   • Gemini: aistudio.google.com
   • Grok: x.ai
   • Claude: anthropic.com
   • HuggingFace: huggingface.co

   Cloud Platforms:

   • Azure OpenAI: Azure portal + deployment URL
   • AWS Bedrock: AWS access/secret keys
   • Google Vertex AI: GCP project ID + authentication

   Specialized Services:

   • DeepSeek: deepseek.com
   • Mistral: console.mistral.ai
   • Together AI: api.together.xyz
   • Cohere: dashboard.cohere.com
   • Groq: console.groq.com
   • Perplexity: perplexity.ai
   • Writer.com: writer.com

   Enterprise Services:

   • AI21: studio.ai21.com
   • Stability AI: platform.stability.ai
   • Fireworks AI: fireworks.ai
   • Anyscale: anyscale.com
   • OpenRouter: openrouter.ai
   • Replicate: replicate.com

   Emerging Platforms:

   • Moonshot AI: moonshot.cn
   • 01.AI: lingyiwanwu.com
   • Baichuan AI: baichuan-ai.com

   Local Services (No API keys required):

   • Ollama: Install and run ollama serve
   • LM Studio: Start local server

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",
           "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",
           "AZURE_OPENAI_API_KEY": "your_azure_key_here",
           "AZURE_OPENAI_ENDPOINT": "your_azure_endpoint_here",
           "AWS_ACCESS_KEY_ID": "your_aws_access_key",
           "AWS_SECRET_ACCESS_KEY": "your_aws_secret_key",
           "AWS_REGION": "us-east-1",
           "VERTEX_PROJECT_ID": "your_gcp_project_id",
           "VERTEX_LOCATION": "us-central1",
           "WRITER_API_KEY": "your_writer_key_here",
           "AI21_API_KEY": "your_ai21_key_here",
           "STABILITY_API_KEY": "your_stability_key_here",
           "FIREWORKS_API_KEY": "your_fireworks_key_here",
           "ANYSCALE_API_KEY": "your_anyscale_key_here",
           "OPENROUTER_API_KEY": "your_openrouter_key_here",
           "REPLICATE_API_TOKEN": "your_replicate_token_here",
           "MOONSHOT_API_KEY": "your_moonshot_key_here",
           "YI_API_KEY": "your_yi_key_here",
           "BAICHUAN_API_KEY": "your_baichuan_key_here",
           "OLLAMA_BASE_URL": "http://localhost:11434/v1",
           "LMSTUDIO_BASE_URL": "http://localhost:1234/v1"
         }
       }
     }
   }
   

   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
• gpt-4o-mini - Lightweight version of GPT-4o
• gpt-3.5-turbo - Fast and cost-effective model

Gemini

• gemini-2.5-flash-lite-preview-06-17 - Lightweight and fast
• gemini-2.5-flash - Advanced reasoning and efficiency

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 (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

Replicate (NEW - Open-source model hosting)

• meta/llama-2-70b-chat - Large Llama 2 chat model
• meta/llama-2-13b-chat - Medium Llama 2 chat model
• meta/llama-2-7b-chat - Small Llama 2 chat model
• meta/codellama-34b-instruct - Code-specialized Llama model
• stability-ai/stable-code-instruct-3b - Stability’s code model
• mistralai/mistral-7b-instruct-v0.2 - Mistral instruction model
• microsoft/wizardcoder-34b - Microsoft’s coding model

AI21 Labs (NEW - Advanced reasoning)

• jamba-1.5-large - Large Jamba model with state-space capabilities
• jamba-1.5-mini - Compact Jamba model
• j2-ultra - Jurassic-2 Ultra model
• j2-mid - Jurassic-2 Mid model

Stability AI (NEW - StableLM family)

• stablelm-2-zephyr-1_6b - Efficient 1.6B parameter model
• stable-code-instruct-3b - Code-specialized 3B model
• japanese-stablelm-instruct-beta-70b - Japanese language model
• stablelm-zephyr-3b - Balanced 3B parameter model

Fireworks AI (NEW - Ultra-fast inference)

• accounts/fireworks/models/llama-v3p1-70b-instruct - Fast Llama 3.1 70B
• accounts/fireworks/models/llama-v3p1-8b-instruct - Fast Llama 3.1 8B
• accounts/fireworks/models/mixtral-8x7b-instruct - Fast Mixtral model
• accounts/fireworks/models/qwen2p5-72b-instruct - Fast Qwen 2.5 model
• accounts/fireworks/models/deepseek-coder-v2-lite-instruct - Code-specialized model

Anyscale (NEW - Ray-powered serving)

• meta-llama/Llama-2-70b-chat-hf - Enterprise Llama 2 70B
• meta-llama/Llama-2-13b-chat-hf - Enterprise Llama 2 13B
• meta-llama/Llama-2-7b-chat-hf - Enterprise Llama 2 7B
• codellama/CodeLlama-34b-Instruct-hf - Enterprise CodeLlama
• mistralai/Mistral-7B-Instruct-v0.1 - Enterprise Mistral 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 16 available platforms”

“Get a Replicate opinion from meta/llama-2-70b-chat on this open-source approach”

“What does AI21’s Jamba-1.5-large think about this reasoning problem?”

“Ask Stability AI’s StableLM about this code optimization”

“Get a super-fast response from Fireworks AI’s Llama model”

“Use Anyscale’s enterprise-grade Llama serving for this complex task”

🔧 Available Tools

Core AI Services

• get_openai_opinion - Get opinion from any OpenAI model
• get_gemini_opinion - Get opinion from any Gemini model (enhanced 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 of 800,000+ HuggingFace models

Local AI Services

• get_ollama_opinion - Get opinion from local Ollama models (NEW)
• get_lmstudio_opinion - Get opinion from LM Studio local models (NEW)

Cloud Enterprise Services

• get_azure_openai_opinion - Get opinion from Azure OpenAI (NEW)
• get_aws_bedrock_opinion - Get opinion from AWS Bedrock models (NEW)
• get_vertex_ai_opinion - Get opinion from Google Vertex AI (NEW)

Specialized Services

• get_deepseek_opinion - Get opinion from DeepSeek models
• get_mistral_opinion - Get opinion from Mistral AI models
• get_together_opinion - Get opinion from Together AI’s 200+ models
• get_cohere_opinion - Get opinion from Cohere enterprise models
• get_groq_fast_opinion - Get ultra-fast responses from Groq
• get_perplexity_opinion - Get web-connected AI responses
• get_writer_opinion - Get opinion from Writer.com AI (NEW)

Enterprise & Emerging Services

• get_ai21_opinion - Get opinion from AI21 Labs models
• get_stability_opinion - Get opinion from Stability AI models
• get_fireworks_opinion - Get opinion from Fireworks AI models
• get_anyscale_opinion - Get opinion from Anyscale models
• get_openrouter_opinion - Get opinion from OpenRouter models
• get_replicate_opinion - Get opinion from Replicate models
• get_moonshot_opinion - Get opinion from Moonshot AI (NEW)
• get_yi_opinion - Get opinion from 01.AI Yi models (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 25+ AI platforms and services
• 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 v4.0

🌟 Major Expansion: 25+ AI Services

• ✅ Local AI Support: Ollama and LM Studio for private, local AI inference
• ✅ Enterprise Cloud: Azure OpenAI, AWS Bedrock, Google Vertex AI
• ✅ Specialized Services: Writer.com for content creation
• ✅ Emerging Platforms: Moonshot AI, 01.AI Yi models, Baichuan AI
• ✅ Complete Coverage: Now supporting 25+ different AI platforms and services

🏢 Enterprise-Ready Features

• ✅ Multi-Cloud Support: Works with all major cloud providers
• ✅ Local Deployment: Run AI models privately with Ollama/LM Studio
• ✅ Enterprise APIs: Full support for business-grade AI services
• ✅ Flexible Configuration: Mix and match any combination of services

🔧 Technical Improvements

• ✅ Enhanced Architecture: Modular design for easy service addition
• ✅ Better Error Handling: Comprehensive error messages and fallbacks
• ✅ Robust Configuration: Environment-based setup with graceful degradation
• ✅ Cross-Platform Tools: Updated comparison and discussion features

🤝 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 🧠✨

Now with 25+ AI services including local, cloud, and enterprise platforms - the most comprehensive AI second opinion service available