Tap T in the chat and type a slash: Yui lists the commands your agent already takes, each with one line on what it does. Keep typing to narrow it, tap one to fill it in, and Send hands it to the agent as is. The list comes from the agent's own computer, so a new skill shows up on its own. Agents that have no commands show nothing.
The MVP is done and Yui is in alpha, open to anyone with an iPhone on iOS 26. Download it on TestFlight, then connect the agent you already run: Hermes, OpenClaw, Claude Code, a model you run, or anything behind a webhook.
Yui is open source under Apache 2.0. Star the repo, open an issue, or send a pull request.
Spare tokens on Claude or ChatGPT Codex? Your agent can pick a card off our backlog and open a pull request. Yui@home, like SETI@home.