[FEATURE]: Skill Update Notification and Auto-Update Mechanism

[moonjoke001]

Problem

Currently, skills installed in OpenCode (via git clone or manual copy) have no update mechanism:

1. No update notification - Users don't know when upstream skills have new versions
2. No auto-update - Must manually git pull or re-clone each skill
3. No version tracking - No way to see installed vs latest version

This is especially problematic for popular skills like:

• obra/superpowers (currently at v4.0.3)
• OthmanAdi/planning-with-files (currently at v2.4.1)
• nextlevelbuilder/ui-ux-pro-max-skill

Proposed Solution

Option A: Update Check Command

opencode skill check-updates
# Output:
# superpowers: v4.0.1 → v4.0.3 (update available)
# planning-with-files: v2.4.1 (up to date)

Option B: Startup Notification

On startup, check for updates and show notification:

[!] 2 skill updates available. Run `/skill update` to update.

Option C: Auto-Update (with config flag)

// opencode.json
{
  "skill": {
    "autoUpdate": true,  // or "notify" or false
    "checkInterval": "daily"
  }
}

Implementation Considerations

1. Skills installed via git clone can use git fetch to check for updates
2. Skills from npm plugins would follow npm update mechanism (per PR feat(plugin): add skill support for plugins #9010)
3. Need to track installation source (git URL vs manual copy vs npm)

Related Issues

• [FEATURE]: Skill Registry + Installer for Awesome-Claude-Skills (Make OpenCode the One Tool) #8386 - Skill Registry proposal (includes version management)
• feat(plugin): add skill support for plugins #9010 - Plugin skill support (npm-based updates)
• [FEATURE]: Add Skill Configuration to Config Type #6013 - Add Skill Configuration to Config Type

Environment

• OpenCode v1.1.28
• Skills installed via git clone to ~/.config/opencode/skills/

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: Skill Registry + Installer for Awesome-Claude-Skills (Make OpenCode the One Tool) #8386: Comprehensive Skill Registry + Installer proposal that includes version management, pinned installs, and update mechanisms
• [FEATURE]: Hot-reload agents, skills and commands. #8751: Hot-reload feature that enables agents to create and reload skills on-the-fly
• [FEATURE]: Add /skills command to list and quick-invoke skills #7846: /skills command for listing and quick-invoking skills with better discoverability

#8386 in particular addresses most of the core functionality proposed here (update checks, version tracking, and auto-update via registry mechanism), though with a broader scope. The approaches are complementary - #8386 focuses on registry-based installation and management, while this issue focuses on update notifications for existing installations.

Feel free to ignore if your use case requires a different approach or if you'd like to track standalone update mechanisms separate from the registry system.

[nokaka]

This is really necessary; here are some projects you can refer to.

https://github.com/numman-ali/openskills
https://github.com/vercel-labs/add-skill
https://github.com/buzhangsan/skills-manager-client/blob/master/docs/README_EN.md