Just Prompt for Claude Desktop: Setup & Config

What you can do with Just Prompt in Claude Desktop

Keep model comparison, saved answers, and a panel's final decision within one MCP workflow.

• Compare independently generated answers to one prompt without switching assistant integrations.
• Reuse a prompt file and keep each model's output as a Markdown artifact.

Before you start: Just Prompt in Claude Desktop

• Python and uv
• Local checkout with dependencies prepared using uv sync
• Credentials for chosen hosted providers, or an Ollama endpoint

This is the minimal README launch, not uv sync alone, which only prepares dependencies. The dot refers to the checkout directory; use the checkout's path if the client starts elsewhere. Provider values can be supplied by environment or .env. The optional --default-models argument chooses fallback models.

Just Prompt Claude Desktop configuration

1. Choose Claude Desktop configuration scope

   For Just Prompt, open macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json. Merge under mcpServers via Settings → Developer → Edit Config when available.

2. Add Just Prompt to Claude Desktop

   Use the just-prompt entry below in mcpServers. Keep Just Prompt's documented stdio connection fields and your other Claude Desktop entries.

3. Check Just Prompt in Claude Desktop

   Just Prompt: Fully quit and reopen Claude Desktop; check developer diagnostics.

{
  "mcpServers": {
    "just-prompt": {
      "command": "uv",
      "args": [
        "--directory",
        ".",
        "run",
        "just-prompt"
      ],
      "env": {
        "OPENAI_API_KEY": "<credential if selecting OpenAI models>",
        "ANTHROPIC_API_KEY": "<credential if selecting Anthropic models>",
        "GEMINI_API_KEY": "<credential if selecting Gemini models>",
        "GROQ_API_KEY": "<credential if selecting Groq models>",
        "DEEPSEEK_API_KEY": "<credential if selecting DeepSeek models>",
        "OLLAMA_HOST": "<address of the Ollama instance to consult>"
      }
    }
  }
}

Just Prompt tools available to Claude Desktop

Just Prompt's stored tool list documents 6 tools; compare it with Claude Desktop's connected tool list, because the stored list is not a live check.

ceo_and_board

When Claude Desktop requests ceo_and_board from Just Prompt, review the action before approving it.

Gather a panel's model responses, ask a designated model for a decision, and save the resulting files.

prompt_from_file_to_file

When Claude Desktop requests prompt_from_file_to_file from Just Prompt, review the action before approving it.

Read a local prompt by absolute path and write model answers to Markdown output files.

prompt_from_file

When Claude Desktop requests prompt_from_file from Just Prompt, review the action before approving it.

Load prompt text from an absolute file path for the chosen models or default model set.

prompt

When Claude Desktop requests prompt from Just Prompt, review the action before approving it.

list_models

When Claude Desktop requests list_models from Just Prompt, review the action before approving it.

list_providers

When Claude Desktop requests list_providers from Just Prompt, review the action before approving it.

Just Prompt: full stored tool descriptions

Troubleshooting Just Prompt in Claude Desktop

• Fully quit and reopen Claude Desktop for Just Prompt. If uv is missing, check the desktop process's PATH, which may differ from your terminal.
• In Claude Desktop's Just Prompt entry, check ANTHROPIC_API_KEY, DEEPSEEK_API_KEY, GEMINI_API_KEY, GROQ_API_KEY, OLLAMA_HOST, OPENAI_API_KEY. Keep secrets out of shared screenshots and repositories.
• Just Prompt uses stdio here: Claude Desktop must keep the configured process running; protocol output belongs on stdout and diagnostics on stderr.
• Known limitation: File-based operations require absolute prompt and output paths.
• Known limitation: Each hosted backend needs its own usable credential.
• Known limitation: Reasoning suffixes are tied to documented models and provider-specific limits.
• General Claude Desktop troubleshooting lives in the /clients/claude-desktop guide.

Frequently asked questions