Whats New

What's New — Update Checker

Checks if the GTM Engine has been updated since the user last checked, shows changelog entries for new versions, and offers to reinstall updated skills.

Invocation

• /whats-new -- Check for updates

Instructions

Step 1: Read current version

Read the VERSION file from the repo root. Store as current_version.

If the VERSION file does not exist, display an error:

Could not find VERSION file. Make sure you're in the GTM Engine repo root.

And stop.

Step 2: Read last seen version

Read config/config.yaml and extract the last_seen_version field.

If config.yaml does not exist, display:

No config found. Run /setup first to initialize the GTM Engine.

And stop.

Store as last_seen_version.

Step 3: Compare versions

If current_version equals last_seen_version:

Display:

## You're up to date!

**Current version:** [current_version]

No new changes since you last checked.

Then skip to Step 7 (still check for skill drift).

If versions differ, proceed to Step 4.

Step 4: Show changelog

Read CHANGELOG.md from the repo root.

Parse the changelog to find all version entries. Show only the entries that are NEWER than last_seen_version.

Display:

## New Updates Available!

**Your version:** [last_seen_version] -> **Latest:** [current_version]

---

[Paste the relevant changelog entries here, preserving markdown formatting]

Step 5: Check for framework changes

1. List all .md files in the frameworks/ directory
2. Read config/config.yaml to see if there's a record of known frameworks (if you added a known_frameworks field previously)
3. If new framework files exist that aren't in the user's context, list them:

### New Frameworks Added
- [framework name] — [one-line description from the file's first heading]

These frameworks will be automatically available in your conversations.

If no new frameworks, skip this section.

Step 6: Check for skill updates

Compare skill files in the repo's skills/ directory against installed skills in ~/.claude/skills/:

1. List all subdirectories in skills/ that contain a SKILL.md
2. For each skill:

a. Check if ~/.claude/skills/[skill-name]/SKILL.md exists b. If it doesn't exist -> mark as "New skill (not installed)" c. If it exists -> read both files and compare their contents

• If contents differ -> mark as "Updated (changes available)"
• If contents match -> mark as "Up to date"

Display a table:

### Skill Status
| Skill | Status | Action Needed |
|-------|--------|--------------|
| [name] | Up to date | None |
| [name] | Updated | Re-install to get changes |
| [name] | New | Install to enable |

Step 7: Offer to reinstall

If any skills are marked as "Updated" or "New":

Ask: "Want me to reinstall updated skills? This will run /setup --reinstall to copy the latest skill files to ~/.claude/skills/."

If user says yes:

1. For each skill marked "Updated" or "New":

• Create ~/.claude/skills/[skill-name]/ if it doesn't exist
• Read the SKILL.md from skills/[skill-name]/SKILL.md
• Write it to ~/.claude/skills/[skill-name]/SKILL.md
• If the skill directory contains a learnings.md in the repo, and there is NO existing learnings.md in ~/.claude/skills/[skill-name]/, create an empty one (never overwrite learnings -- those are user data)

1. Display: "Reinstalled [N] skills: [list names]"

If user says no: Display: "No problem. Run /whats-new anytime to check again, or /setup --reinstall to update manually."

Step 8: Update lastseenversion

If the version changed (Step 3 found a difference):

1. Read the current config/config.yaml
2. Find the line containing last_seen_version: and replace its value with current_version
3. Write the updated config back

Display:

Updated your last_seen_version to [current_version].

If the version was already current (no change), skip this step.

---

Important Notes

• Never overwrite learnings.md files in ~/.claude/skills/ -- those contain user-specific learning data
• Always preserve the rest of config.yaml when updating lastseenversion -- only change that one field
• The VERSION file is the single source of truth for the current engine version
• Changelog parsing: version headers follow the format ## [X.Y.Z] -- use this to identify version boundaries
• If the user has local modifications to SKILL.md files in ~/.claude/skills/, warn them before overwriting: "Your installed [skill] has local changes. Overwrite with the latest version?"

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: himanshusaleria
• Source: himanshusaleria/gtm-engine
• License: MIT

Install and usage instructions live in the source repository linked above.