# Mise

> Manage tool versions and tasks with mise (formerly rtx). Use when a user asks to manage Node.js/Python/Go versions per project, replace nvm/pyenv/asdf, or define project-level tool requirements.

- Skill: `eliferjunior/mise` (Agent Skill)
- Install (CLI): `npx skillmds@latest add eliferjunior/mise`
- Raw SKILL.md: https://api.skillmd.com/api/skills/eliferjunior/mise/raw
- Safety review: WARNING (external: skill-scanner WARNING, skillspector WARNING)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: Apache-2.0
- Author: eliferjunior (https://skillmd.com/u/eliferjunior)
- Updated: 2026-08-19
- Page: https://skillmd.com/skills/eliferjunior/mise

---


# mise

## Overview
mise manages tool versions — Node.js, Python, Go, Rust, Ruby, etc. One tool replaces nvm, pyenv, rbenv, and asdf. Also runs project tasks.

## Instructions

### Step 1: Install
```bash
curl https://mise.run | sh
echo 'eval "$(mise activate bash)"' >> ~/.bashrc
```

### Step 2: Configuration
```toml
# mise.toml — Project tool versions and tasks
[tools]
node = "20"
python = "3.12"
go = "1.22"

[env]
DATABASE_URL = "postgresql://localhost/myapp"

[tasks.dev]
run = "npm run dev"

[tasks.test]
run = "npm test"
```

```bash
mise install    # install all tools
mise run dev    # run task
```

## Guidelines
- mise is 10-100x faster than asdf (Rust vs bash).
- Reads .tool-versions, .node-version, .python-version — drop-in replacement.
- Tasks in mise.toml replace Makefiles and package.json scripts.