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Just MCP Server

promptexecution/just-mcp

Wraps the Just command runner to expose Justfile recipes through MCP's tool interface. Instead of letting your LLM fumble through bash or try to parse Justfiles directly, this gives it four clean tools: list_recipes, run_recipe, get_recipe_info, and validate_justfile. The pitch is solid: Justfiles create a curated, safer command surface than raw shell access, and the recipe abstraction saves context since the LLM gets commands and parameters without reading implementation files. Built in Rust using rmcp, ships as npm/pip/cargo packages plus Docker images. Most useful if you're already using Just for project automation and want to give Claude controlled execution without the hallucination risks of unrestricted bash.

GitHub stars
50
tools
4
transport
STDIO
last updated
Nov 15, 2025
View on GitHub

Tools

4 tools

Public tool metadata for what this MCP can expose to an agent.

list_recipesList all available recipes in the justfile

List all available recipes in the justfile

No parameter schema in public metadata yet.

run_recipeExecute a specific recipe with optional arguments

Execute a specific recipe with optional arguments

No parameter schema in public metadata yet.

get_recipe_infoGet detailed information about a specific recipe

Get detailed information about a specific recipe

No parameter schema in public metadata yet.

validate_justfileValidate the justfile for syntax and semantic errors

Validate the justfile for syntax and semantic errors

No parameter schema in public metadata yet.

Sponsors

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Readme

just-mcp

CI Release Crates.io License: MIT

Trust Score

👋 A way to let LLMs speak Just

A production-ready MCP server that provides seamless integration with Just command runner, enabling AI assistants to discover, execute, and introspect Justfile recipes through the standardized MCP protocol.

🎯 Why Just + MCP = Better Agent Execution

View the full README on GitHub

Details

Repository
github.com/promptexecution/just-mcp
Category
Automation & Workflows
Package
ghcr.io/promptexecution/just-mcp:0.1.5
Transport
STDIO
Registry
MCP registry, active

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