OpenKit Skills

OpenKit's collection of Agent Skills — reusable, model-invoked capabilities built on the open SKILL.md standard, so they work across Claude (Code, Cowork, claude.ai), Codex / ChatGPT, Cursor, Gemini CLI, Copilot, and any other agent that reads SKILL.md.

This repo is set up so the same GitHub repo works for both the cross-tool npx skills installer and the native Claude Code plugin marketplace. Pick whichever route your users prefer.

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⬇️ Download the skills (no repo to clone, no sifting)

One link, skills only. Unzipping gives a flat list of three .md files — one per skill, nothing to click through.

Download — the link for the website:

https://github.com/OpenKit-Ltd/skills/releases/latest/download/openkit-inbox-skills.zip

Unzip and you get, side by side:

build-user-context.md
inbox-triage.md
build-inbox-voice.md

In Claude's web/desktop app, add each one under Customize → Skills (start with build-user-context — the other two build on it). For Claude Code, use npx skills add or /plugin from the Install section below instead; those pull straight from the repo.

Claude Cowork plugin file — openkit-tools-plugin.zip installs all three as one plugin via Cowork's "upload a custom plugin file":

https://github.com/OpenKit-Ltd/skills/releases/latest/download/openkit-tools-plugin.zip

These releases/latest/download/… URLs are permanent — they always serve the newest release, so hard-code them on the OpenKit site once and never touch them again. A new release is cut whenever a v* tag is pushed (CI rebuilds these artifacts). See CONTRIBUTING.md.

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Install

Option 1 — npx skills (easiest, works across 30+ agents)

npx skills add OpenKit-Ltd/skills

No Claude session required, no restart — it drops the skills into the right place for whichever agent you have installed. Add -g for a global (all-projects) install, or --list to preview what's in the repo first.

Option 2 — Claude Code plugin marketplace (versioned + auto-updating)

/plugin marketplace add OpenKit-Ltd/skills
/plugin install openkit-tools@openkit

Then run a skill directly, e.g. /openkit-tools:inbox-triage. Update later with /plugin marketplace update openkit.

Option 3 — Claude web & desktop (no CLI, no commands)

No commands — you add each skill through the UI:

1. Download openkit-inbox-skills.zip (link at the top) and unzip it — you get three .md files (build-user-context.md, inbox-triage.md, build-inbox-voice.md).
2. In Claude, go to Customize → Skills and add each one. Start with build-user-context, since the other two build on it.

For teams: on Team/Enterprise plans an org owner can add the skills once under Organization settings → Skills so they appear automatically for everyone.

Option 4 — Claude Cowork (installs every skill at once)

Cowork installs plugins (bundles of skills), so a single install delivers the whole kit — no picking skills one by one. Two ways:

• Add marketplace from GitHub (nothing to download): Cowork → Customize → Plugins → + → Add marketplace → enter OpenKit-Ltd/skills → install openkit-tools. Every skill becomes available immediately (type / in chat or Cowork to see them).
• Upload the plugin file: download openkit-tools-plugin.zip from Releases and use the upload option on the Plugins page.

For teams: an org owner can distribute the marketplace org-wide and mark the plugin as required / auto-installed, so everyone gets all the skills with zero manual steps.

Maintainers: rebuild the download artifacts locally with bash scripts/build-skill-zips.sh (outputs to dist/). CI does this automatically on each v* tag and attaches them to the matching GitHub Release.

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Available skills

These three skills make up the OpenKit Inbox suite. Set them up in order — start with build-user-context, which the other two depend on.

Skill	What it does
build-user-context	Run first. Interviews you and researches your email to generate your personalised user-context skill — who you are, who you work with, the projects that matter, and how you write. Prerequisite for the rest.
inbox-triage	Reads your inbox over a chosen window and returns a structured brief — Urgent / Watching / Skip — as colour-coded priority cards that expand on click. Read-only; never drafts or sends. Uses user-context.
build-inbox-voice	Analyses your sent/received threads to build an inbox-reply-drafter skill that writes replies in your voice. Uses user-context.

build-user-context and build-inbox-voice are builders: running them generates two further skills — user-context and inbox-reply-drafter — which you install the same way as any other skill.

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What's in here

skills/                       # repo root (github.com/OpenKit-Ltd/skills)
├── .claude-plugin/
│   ├── marketplace.json     # marketplace catalog (enables /plugin marketplace add)
│   └── plugin.json          # plugin manifest (this repo == one plugin: "openkit-tools")
├── skills/                  # one folder per skill, each with a SKILL.md
│   ├── build-user-context/
│   │   └── SKILL.md
│   ├── inbox-triage/
│   │   └── SKILL.md
│   └── build-inbox-voice/
│       └── SKILL.md
├── templates/
│   └── SKILL.template.md    # copy this to start a new skill
├── scripts/
│   └── build-skill-zips.sh  # builds the flat skills bundle + plugin package -> dist/
├── .github/workflows/
│   └── release-skill-zips.yml  # CI: attach skill ZIPs to each GitHub Release
├── CONTRIBUTING.md          # how to add a skill + how to cut a release
├── SECURITY.md              # trust & safety notes for users
└── LICENSE

This one repo is a single source of truth for every agent: any SKILL.md-compatible tool (Codex / ChatGPT, Cursor, Gemini CLI, Copilot, …) installs with npx skills add OpenKit-Ltd/skills; Claude Code uses that or /plugin; Claude Cowork adds the repo as a marketplace and installs the whole plugin (all skills) at once, or takes the plugin file; and claude.ai web/desktop users download a per-skill ZIP and upload it in the UI.

The repo root doubles as both the marketplace and a single plugin (openkit-tools), so all skills live in the top-level skills/ directory.

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Develop & test locally

# Validate the marketplace + plugin manifests and skill frontmatter
claude plugin validate .

# Load the plugin into a throwaway Claude Code session without installing it
claude --plugin-dir .
#   then inside the session: /openkit-tools:inbox-triage
#   after edits:             /reload-plugins

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Adding your own skill

See CONTRIBUTING.md. Short version: copy templates/SKILL.template.md to skills/<your-skill-name>/SKILL.md, fill in the frontmatter, add a row to the table above, and bump the version in .claude-plugin/plugin.json.

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A note on the repo name

All install commands and download links assume this repo lives at github.com/OpenKit-Ltd/skills. If you ever move it, find-and-replace OpenKit-Ltd/skills in this README and in the homepage/repository fields of plugin.json and marketplace.json.

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License

MIT © OpenKit