What is hyday-pet?
hyday-pet is a Claude Code mod by mukiwu that a virtual pet that lives above your Claude Code prompt and grows from the work Claude does: it evolves by what Claude does most, gets sick from tool errors, plays mini games, and spends. It is listed under Cost & usage and has 72 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | mukiwu |
| Repository | mukiwu/muki-ai-plugins |
| Popularity | 72 GitHub stars |
| Category | Cost & usage |
| Security | Low risk (84/100) |
| Rank | #225 of 5,272 Claude Code mods; #36 in Cost & usage |
| Last commit | 2026-10-15 |
| Hooks | 7 events |
| Sees | every prompt, every tool call |
| Draws on | Pane, AbovePrompt |
Is hyday-pet safe to install?
hyday-pet scores 84/100 on the MCPMods security check: Low risk. Things to review: watches every prompt or event. It passed 6 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Watches every prompt or event | Review |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.every | |
$.clock.now | |
$.command.register | |
$.state.get | |
$.state.set | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.close | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install hyday-pet?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/mukiwu/muki-ai-plugins claude plugin validate ./muki-ai-plugins/plugins/hyday-pet
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add mukiwu/muki-ai-plugins && claude plugin install hyday-pet@muki-ai-plugins
Or ask Claude to set it up
Paste this into Claude Code and it installs hyday-pet for you:
Install the "hyday-pet" Claude Code mod from https://github.com/mukiwu/muki-ai-plugins/tree/master/plugins/hyday-pet. Run claude plugin validate on it first and show me what it can access before you enable it.
More from mukiwu/muki-ai-plugins
This repository has 2 Claude Code mods on MCPMods.
- world-news: Major news from the Taiwan edition of Google News, pinned under your prompt: each time you send a message it reads the f (Review before installing)