Just Prompt MCP Server

Just Prompt MCP server exists for a simple reason — assistants are far more useful when they can act on Just Prompt directly instead of describing what you should do. just-prompt is a Model Control Protocol (MCP) server that provides a unified interface to various Large Language Model (LLM) providers including OpenAI, Anthropic, Google Gemini, Groq, DeepSeek, and Ollama. See how we use the.

What you get

• Unified API for multiple LLM providers
• Support for text prompts from strings or files
• Run multiple models in parallel
• Automatic model name correction using the first model in the --default-models list
• Ability to save responses to files
• Easy listing of available providers and models

Setting it up

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

What the assistant can call

Once Just Prompt is connected, these are the calls the assistant has available:

• Parameters — - text: The prompt text

Configuration and credentials

You will need 6 environment variables: OPENAI_API_KEY, ANTHROPIC_API_KEY, GEMINI_API_KEY, GROQ_API_KEY, DEEPSEEK_API_KEY, OLLAMA_HOST. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

Before you rely on it

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the just prompt mcp server does with a few real requests.

Choosing this one

Among the AI and media services options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Just Prompt's toolset — Parameters — is a fair guide to whether it matches your workflow. It is maintained by disler; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.