---
name: version
description: Show installed and latest scaffold version
phase: null
order: null
dependencies: []
outputs: []
conditional: null
stateless: true
category: tool
knowledge-base: []
---

## Purpose

Show the installed scaffold version and check if a newer version is available.
A read-only diagnostic — no files are modified.

## Instructions

### Step 1 — Detect Installed Version

Determine the currently installed scaffold version using this detection cascade (stop at the first match):

1. **User-command install:** Run `cat ~/.claude/commands/.scaffold-version 2>/dev/null` to check for the user-command version marker.
   - If the file exists, parse the version from it (format: `1.2.0 (abc1234)` — extract the version number before the space).

2. **Plugin install (clone):** Read the version from the marketplace clone's plugin manifest:
   ```bash
   cat ~/.claude/plugins/marketplaces/zigrivers-scaffold/.claude-plugin/plugin.json 2>/dev/null
   ```
   Extract the `version` field from the JSON.

3. **Plugin install (metadata fallback):** Read the version from Claude Code's plugin registry:
   ```bash
   cat ~/.claude/plugins/installed_plugins.json 2>/dev/null
   ```
   Find the entry for `scaffold@zigrivers-scaffold` and extract its `version` field.

4. **Final fallback:** If none of the above worked, report the installed version as "unknown".

Store the detected version for comparison.

### Step 2 — Fetch Latest Version

Check the latest available version from GitHub:

```bash
curl -sf https://raw.githubusercontent.com/zigrivers/scaffold/main/CHANGELOG.md
```

From the output, extract the version number from the **first** `## [X.Y.Z]` line. This is the latest released version.

If the `curl` command fails (non-zero exit, empty output), note that the remote check failed and skip to Step 3.

### Step 3 — Compare and Report

Display the results to the user:

---

**Scaffold version check**

- **Installed:** `<installed version>`
- **Latest:** `<latest version>` (or "couldn't reach GitHub" if the remote check failed)
- **Status:** one of:
  - "Up to date" — if installed version matches latest
  - "Update available" — if latest is newer than installed
  - "Couldn't check remote" — if the fetch failed

If an update is available, suggest:

> Run `/scaffold:update` (or `/user:update` for user-command installs) to update.

---

## Process Rules

1. **Read-only** — do NOT modify any files.
2. Run each step in order.
3. If the remote check fails, still report the installed version — don't treat it as an error.
4. Keep the output concise — no extra explanation beyond the version report.