How do I install the Nxv skill?

Run npx skillmds@latest add javimosch/nxv in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Nxv skill do?

Use this skill when the user wants to find Nix package versions, search nixpkgs history, or locate specific commits for Nix shell commands. It is listed under Coding & Dev Tools on SkillMD.

SkillMD's automated safety review verdict for this skill is WARNING. Independent scanners report: SkillSpector: PASS, Skill Scanner: WARNING. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Nxv?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

javimosch (@javimosch) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Nxv by javimosch — Agent Skill

Name: Nxv
Author: javimosch

File contents

nxv Plugin

Find any version of any Nix package, instantly.

Commands

Package Search

nxv package search — Search for Nix packages
nxv package info — Show package details
nxv package history — Show version history

Usage Examples

"Find all versions of Python in nixpkgs"
"Search for nodejs packages"
"Get info about a specific package"
"See when a version was available"

Installation

curl -fsSL https://raw.githubusercontent.com/utensils/nxv/main/install.sh | sh

Or:

cargo install nxv
nix run github:utensils/nxv -- search python

Examples

# Search for packages
nxv search python
nxv search python 3.11
nxv search "json parser" --desc

# Get package info
nxv info python
nxv info python 3.11.0

# Version history
nxv history python
nxv history python 3.11.0

# Use a found version
nix shell nixpkgs/e4a45f9#python

Key Features

Fast search with Bloom filter
Version history for all packages
Multiple interfaces: CLI, HTTP API, or web UI
NixOS module for systemd service
SQLite FTS5 full-text search

Frequently asked questions

Nxv