Build with an AI agent

If you work with a coding agent such as Claude Code, you can give it a skill for HUB.KI custom apps. A skill is a short instruction file the agent loads when a task matches it. This one tells the agent how to approach a custom app and where to look things up — it contains no API details of its own. The agent reads the pages of this documentation live, so it follows the current SDK, manifest rules and sandbox policy rather than whatever it remembers.

Install

The skill is a single file: docs.hub.ki/skills/hub-custom-apps/SKILL.md.

For one project, from the project root:

mkdir -p .claude/skills/hub-custom-apps
curl -fsSL https://docs.hub.ki/skills/hub-custom-apps/SKILL.md \
  -o .claude/skills/hub-custom-apps/SKILL.md

For every project on your machine, install it into ~/.claude/skills/ instead:

mkdir -p ~/.claude/skills/hub-custom-apps
curl -fsSL https://docs.hub.ki/skills/hub-custom-apps/SKILL.md \
  -o ~/.claude/skills/hub-custom-apps/SKILL.md

Commit the project copy if your team should share it. Other agents that support the Agent Skills format load the same file from their own skills folder.

Because the skill only points at the documentation, it rarely changes. Run the same command again to update it.

Use it

Describe the app you want; the agent picks the skill up on its own. For example:

Build a HUB.KI custom app that keeps a per-user reading list: title, link, and a done checkbox. It should follow the host theme and run locally while I develop.

Here is my custom app. Check the manifest against the validation rules and tell me why the sync skips it.

I need this app to call our own API at https://api.example.com. What do I have to change, and what does our admin have to approve?

The agent will:

1. read llms.txt and the pages it needs,
2. ask you for anything only you can decide — above all your appId namespace and where data should live, since the key/value store starts empty on every new app version,
3. scaffold, develop against the SDK's mock host, build a single HTML file, and check the manifest against every validation rule,
4. tell you exactly what to upload and what to ask your administrator for.

What to expect

• It needs a GitHub token to install the SDK, exactly as in the Quick start. Export GITHUB_TOKEN in the shell the agent uses; the skill tells it never to write the token to a file or print it.
• It does not publish. Uploading to a source is yours to do, and registering, syncing and making the app available are an administrator's.
• It cannot run the production build inside HUB.KI. The mock host covers development. The agent will say what it could not test and list what to check after the first sync.

Without skills

Any assistant can use the same material. Point it at llms.txt, an index of every page as Markdown, or paste llms-full.txt, the whole documentation in one file. Copy Markdown at the top of each page gives you a single page.