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+---
+name: petdex
+description: Install and select animated petdex mascots for Hermes.
+version: 1.0.0
+author: Hermes Agent
+license: MIT
+platforms: [linux, macos, windows]
+metadata:
+  hermes:
+    tags: [petdex, mascot, display, cli, tui, desktop]
+    category: productivity
+    homepage: https://petdex.dev
+---
+
+# Petdex Skill
+
+Browse, install, and select animated "pet" mascots from the public
+[petdex](https://github.com/crafter-station/petdex) gallery. An installed pet
+reacts to agent activity (idle, running a tool, reviewing, error, done) across
+the Hermes CLI, TUI, and desktop app. This skill drives the `hermes pets` CLI
+and the `display.pet` config — it does not generate sprites.
+
+## When to Use
+
+- The user wants a desktop/terminal mascot or asks about "pets" / petdex.
+- The user wants to change, preview, or disable the active pet.
+- Diagnosing why a pet isn't showing (terminal graphics support, config).
+
+## Prerequisites
+
+- Network access to `petdex.dev` for the gallery/manifest (read-only, no auth).
+- Pillow (a core Hermes dependency) for sprite decoding — already installed.
+- For full-fidelity terminal rendering: a graphics-capable terminal (kitty,
+  Ghostty, WezTerm, iTerm2, or sixel). Otherwise a truecolor Unicode
+  half-block fallback is used automatically.
+
+## How to Run
+
+Use the `terminal` tool to run `hermes pets <subcommand>`.
+
+## Quick Reference
+
+| Goal | Command |
+| --- | --- |
+| Browse the gallery | `hermes pets list` (add a substring to filter: `hermes pets list cat`) |
+| List installed pets | `hermes pets list --installed` |
+| Install a pet | `hermes pets install <slug>` (add `--select` to make it active) |
+| Set the active pet | `hermes pets select <slug>` (omit slug for a picker) |
+| Resize the pet everywhere | `hermes pets scale <factor>` (e.g. `0.5`, clamped 0.1–3.0) |
+| Preview/animate in terminal | `hermes pets show [slug] [--cycle] [--state run]` |
+| Disable the pet | `hermes pets off` |
+| Remove a pet | `hermes pets remove <slug>` |
+| Diagnose setup | `hermes pets doctor` |
+
+## Procedure
+
+1. Find a pet: `hermes pets list <query>` and note its `slug`.
+2. Install + activate: `hermes pets install <slug> --select`.
+3. Preview it: `hermes pets show` (Ctrl+C to stop).
+4. Confirm setup: `hermes pets doctor` — shows the resolved pet, configured
+   render mode, detected terminal graphics protocol, and effective mode.
+
+Pets install into `<HERMES_HOME>/pets/<slug>/` (profile-aware). Selecting a pet
+writes `display.pet.slug` + `display.pet.enabled` to `config.yaml`.
+
+## Configuration
+
+Under `display.pet` in `config.yaml`:
+
+- `enabled` (bool) — master on/off.
+- `slug` (str) — active pet; empty = first installed.
+- `render_mode` — `auto` (detect) | `kitty` | `iterm` | `sixel` | `unicode` | `off`.
+- `scale` (float) — on-screen size of the native 192×208 frames (default 0.33,
+  clamped 0.1–3.0). One knob resizes every surface; set it with
+  `hermes pets scale <factor>`, the `/pet scale` slash command, or the desktop
+  Appearance slider.
+- `unicode_cols` (int) — width in columns for the Unicode fallback.
+
+## Pitfalls
+
+- A pet only shows once one is installed AND selected (`enabled: true`).
+- Inside a pipe/redirect (no TTY) terminal rendering is disabled by design.
+- The petdex npm CLI installs to `~/.codex/pets`; Hermes uses its own
+  profile-scoped `<HERMES_HOME>/pets/` instead — install through `hermes pets`.
+
+## Verification
+
+- `hermes pets doctor` reports `✓ ready` when a pet is installed, selected,
+  enabled, and Pillow is importable.