Asdf
Command reference for asdf-vm: plugins, .tool-versions, shims, and migrating off nvm/pyenv/rbenv.
Test report
- Verdict
- Tested · Works
- Score
- Tested
- Jul 14, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Aug 10, 2026 · 3014981
A migrate-from-nvm mini-task showed the concrete value: the skill body correctly reaches for the modern `asdf set` command and the exact `.asdfrc` `legacy_version_file` key plus `asdf reshim` for broken shims, where an unguided answer is more likely to reach for the deprecated `asdf local`/`asdf global` syntax still common in older docs.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 7/10
- Docs & honesty 4/5
What Asdf does
Reference for installing and operating asdf, the universal runtime version manager, covering plugin management, .tool-versions resolution, shell integration for Bash/Zsh/Fish, shim troubleshooting, and migration from nvm/pyenv/rbenv/tfenv. Triggers on any mention of asdf, .tool-versions files, or switching between per-project language/tool versions.
How to install Asdf
git clone https://github.com/jjmartres/ai-coding-agents
cd ai-coding-agents
mkdir -p ~/.claude/skills
cp -r shared/.ai-agents/skills/asdf ~/.claude/skills/asdf
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Asdf
-
/asdfCommand reference for asdf-vm: plugins, .tool-versions, shims, and migrating off nvm/pyenv/rbenv.
It also activates on plain-language prompts like these:
-
How do I install asdf and set up Node 20 with .tool-versions? -
I'm migrating from nvm to asdf, how do I enable legacy files? -
My asdf shims aren't working, node command not found
Frequently asked questions
- Is the Asdf skill free?
- Yes. The skill itself is free from jjmartres/ai-coding-agents. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Asdf work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. A migrate-from-nvm mini-task showed the concrete value: the skill body correctly reaches for the modern `asdf set` command and the exact `.asdfrc` `legacy_version_file` key plus `asdf reshim` for broken shims, where an unguided answer is more likely to reach for the deprecated `asdf local`/`asdf global` syntax still common in older docs.
- What is the Asdf SkillProof Score?
- 8.4/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 4/5.
- How do I install Asdf?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Asdf with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.