Just Prompt
A lightweight MCP server that provides a unified interface to various LLM providers including OpenAI, Anthropic, Google Gemini, Groq, DeepSeek, and Ollama.
What is Just Prompt?
Just Prompt is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to lightweight mcp server that provides a unified interface to various llm providers including openai, anthropic, google gemini, groq, deepseek, and ollama.
A lightweight MCP server that provides a unified interface to various LLM providers including OpenAI, Anthropic, Google Gemini, Groq, DeepSeek, and Ollama.
This server falls under the Coding Agents category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A lightweight MCP server that provides a unified interface t
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx just-promptConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Just Prompt
Just Prompt is a lightweight MCP server that exposes a unified interface for sending prompts to multiple LLM providers — OpenAI, Anthropic, Google Gemini, Groq, DeepSeek, and Ollama — from a single tool call inside any MCP-compatible client. Beyond simple prompt forwarding, it includes a 'ceo_and_board' pattern where one model acts as the decision-maker after receiving input from several 'board member' models, making multi-model reasoning workflows easy to build. Developers use it to compare model outputs, run parallel reasoning experiments, and automate decisions that benefit from consulting multiple AI perspectives.
Prerequisites
- Python 3.10+ and uv package manager installed
- API keys for each provider you intend to use: OPENAI_API_KEY, ANTHROPIC_API_KEY, GEMINI_API_KEY, GROQ_API_KEY, DEEPSEEK_API_KEY
- Ollama running locally at http://localhost:11434 if using local models
- An MCP client such as Claude Code or Claude Desktop
- Git to clone the repository
Clone the repository and install dependencies
Clone the just-prompt repo and install Python dependencies using uv.
git clone https://github.com/disler/just-prompt.git
cd just-prompt
uv syncCreate a .env file with your API keys
Copy the example env file and fill in keys for the providers you want to use. You only need keys for providers you plan to query.
cp .env.example .env
# Edit .env and add:
# OPENAI_API_KEY=sk-...
# ANTHROPIC_API_KEY=sk-ant-...
# GEMINI_API_KEY=AIza...
# GROQ_API_KEY=gsk_...
# DEEPSEEK_API_KEY=sk-...
# OLLAMA_HOST=http://localhost:11434Add the server to Claude Code
Register just-prompt as an MCP server scoped to your current project using the Claude Code CLI.
claude mcp add just-prompt -s project -- uv --directory /path/to/just-prompt run just-promptVerify available providers and models
Ask Claude to list the available providers and models by calling the list_providers and list_models tools to confirm configuration is correct.
Configure Claude Desktop (alternative)
Add the server to your Claude Desktop config, pointing uv to the cloned directory.
{
"mcpServers": {
"just-prompt": {
"command": "uv",
"args": ["--directory", "/path/to/just-prompt", "run", "just-prompt"],
"env": {
"OPENAI_API_KEY": "sk-your-key",
"ANTHROPIC_API_KEY": "sk-ant-your-key",
"GEMINI_API_KEY": "AIza-your-key"
}
}
}
}Just Prompt Examples
Client configuration
Claude Desktop configuration for just-prompt with multiple provider API keys.
{
"mcpServers": {
"just-prompt": {
"command": "uv",
"args": ["--directory", "/path/to/just-prompt", "run", "just-prompt"],
"env": {
"OPENAI_API_KEY": "sk-your-openai-key",
"ANTHROPIC_API_KEY": "sk-ant-your-anthropic-key",
"GEMINI_API_KEY": "AIza-your-gemini-key",
"GROQ_API_KEY": "gsk_your-groq-key",
"DEEPSEEK_API_KEY": "sk-your-deepseek-key",
"OLLAMA_HOST": "http://localhost:11434"
}
}
}
}Prompts to try
Example prompts that use the unified multi-LLM interface and CEO/board decision pattern.
- "Send this prompt to gpt-4o and claude-3-5-sonnet and compare their answers: What are the main risks of microservices?"
- "Use the ceo_and_board tool: have o3 decide the best database for a startup based on input from gpt-4o and gemini-1.5-pro"
- "List all available models and their provider prefixes"
- "Send my prompt from context.txt to deepseek-r1 and save the response to output.md"
- "Prompt all configured providers with the same question and show me the differences in their responses"Troubleshooting Just Prompt
Provider returns authentication error
Confirm the correct env var name is set in .env: OPENAI_API_KEY, ANTHROPIC_API_KEY, GEMINI_API_KEY, GROQ_API_KEY, DEEPSEEK_API_KEY. Restart the MCP server after editing .env.
Ollama models not listed
Ensure Ollama is running ('ollama serve') and OLLAMA_HOST is set to http://localhost:11434 (or your custom host). Pull a model first with 'ollama pull llama3'.
uv command not found when starting server
Install uv via 'curl -LsSf https://astral.sh/uv/install.sh | sh' and ensure it is on your PATH. Verify with 'uv --version'.
Frequently Asked Questions about Just Prompt
What is Just Prompt?
Just Prompt is a Model Context Protocol (MCP) server that lightweight mcp server that provides a unified interface to various llm providers including openai, anthropic, google gemini, groq, deepseek, and ollama. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Just Prompt?
Follow the installation instructions on the Just Prompt GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Just Prompt?
Just Prompt works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Just Prompt free to use?
Yes, Just Prompt is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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