jup 0.19.1

jup - Agent Skills Manager

jup ✨

jup is a small command-line tool for installing and syncing agent skills across the local skill directories used by supported AI assistants.

Why jup? 💊

The name is short for "jump", a nod to the Jump Program from The Matrix. Just as the program was a foundational training ground for jumping between buildings (and realizing your potential), jup helps your agents "jump" between different environments and workflows with the right skills in hand.

It helps you:

• install skills from GitHub repositories that expose a top-level skills/ folder (or .claude/skills/ as a fallback)
• keep installed skills organized in a lockfile so they can be synced again later
• copy or link skills into the directories used by harnesses like Gemini, Copilot, and Claude

Features ✨

• Multi-Harness Support: Sync skills for Gemini, Copilot, Claude, and Codex.
• Local-First: Works with local skill directories and global configurations.
• Git Integration: Install and update skills directly from GitHub.

Quick Start 🚀

1. Install jup 📦

The preferred way to install jup is from PyPI with uv:

uv tool install jup
jup --help

If you do not want to install it, you can run it on demand:

uvx jup --help

pip also works if you prefer a traditional install:

pip install jup
jup --help

2. Check the current configuration ⚙️

jup config show

3. Choose which harness directories should receive synced skills 🤖

jup config set harnesses gemini,copilot,claude

Use none to clear the list:

jup config set harnesses none

4. Add skills ➕

jup add owner/repo --category productivity

Search for skills 🔍

Search for skills in the skills.sh registry:

jup find instagram

By default, this lists matching skills. You can filter and limit the results:

jup find instagram --limit 5 --min-installs 100

To install a skill interactively from the search results, use the --interactive (or -it) flag:

jup find instagram --interactive

Advanced GitHub Usage

You can use --path to specify a subdirectory (default: skills/), and --skills to select specific skill names (comma-separated) to add from the skills directory:

jup add owner/repo --path custom/skills/dir --skills skill-a,skill-b --category productivity

• --path and --skills only work with GitHub sources (not local directories).
• If --skills is omitted, all skills in the specified path are added.
• If --path is omitted, the default is skills/.
• If the specified skills directory does not exist, jup will also look for .claude/skills/ as a fallback.

You can also add local skills using relative or absolute paths (these ignore --path and --skills):

jup add ./local-skills --category productivity
jup add ../team-skills
jup add /absolute/path/to/local-skills

5. Review and update skills 📋

jup list

• Shows all installed skills, their source repo (with clickable links in supported terminals), install/update date, and which harness directories they are synced to.

Check for updates and apply them

jup sync --update

• Checks all installed GitHub skills for updates and applies them if available. Tracks the last update date for each source.
• You can also use jup sync --check to only check for updates without applying them.
• The update status and last checked date are shown in jup list.

6. Push the managed skills into the configured harness directories 🔄

jup sync

Comparison with npx skills ⚖️

While Vercel's npx skills is a fantastic package manager for AI skills with a built-in search registry, jup focuses heavily on centralized lockfile management and local symlink synchronization across multiple harnesses. jup is ideal if you want to maintain a single source of truth for your skills and automatically symlink them to Gemini, Claude, and Copilot simultaneously, especially when authoring skills locally.

For a full breakdown of commands, pros, and cons, see the jup vs. npx skills comparison.

What It Does 🧭

jup works with repositories that follow a simple structure:

repo/
  skills/
    skill-name/
      SKILL.md

When you run jup add owner/repo, it clones the repository, finds every nested skill directory under skills/ (or .claude/skills/ if present) that contains a SKILL.md file, stores those skills in ~/.jup, and records them in a lockfile.

For local sources, jup add supports either of these layouts:

local-skills/
  skill-a/
    SKILL.md
  skill-b/
    SKILL.md

or a single skill directory:

single-skill/
  SKILL.md

After that, jup sync installs the managed skills into the configured target locations. By default, jup uses symlinks, but you can switch to copying with:

jup config set sync-mode copy

Skills are placed directly into the harness's skill folder (e.g., ~/.gemini/skills/my-skill/), ensuring they are correctly discovered by the harness.

Update and Check Features

• jup sync --update checks for updates to all installed GitHub skills and updates them if new versions are available. The last update date is tracked per source.
• jup sync --check checks for updates but does not apply them.
• jup list shows the last update/check date and provides clickable links to the source repositories (in supported terminals).

The main configuration values are:

• scope: global or local
• harnesses: a comma-separated list of harness names
• sync-mode: link or copy

7. Manage custom harness providers 🤖

You can add your own harness providers if they use a standard skills/ directory structure:

# List all providers
jup harness list

# Add a new custom provider
jup harness add myharness --global-location ~/.myharness/skills --local-location ./.myharness/skills

# Edit an existing custom provider
jup harness edit myharness --local-location ./new-path/skills

# Remove a custom provider
jup harness remove myharness

Once a custom harness is added, you can activate it in your configuration:

jup config set harnesses gemini,myharness

Supported Harnesses 🧩

jup includes built-in locations for these harness names:

• gemini
• copilot
• claude
• codex
• .agents

Contributing 🤝

Contributions are welcome. We use standard tools like uv, ruff, ty, just, and pre-commit.

See CONTRIBUTING.md for detailed development setup, workflow, and publishing details.