One Skill to Rule Them All
Task Observer is a skill that watches your AI work sessions and suggests improvements to your other skills for people who build and maintain Claude skills.
What it is good for
- Spotting repeated steps that should become a reusable skill
- Improving existing AI skills based on corrections made during work
- Keeping a running log of changes to a library of AI instructions
- Tracking recurring mistakes an AI assistant makes across projects
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- Skill or plugin
- Tasks
- Works with
- Claude Code, Claude Cowork, Claude apps, Hermes, Openclaw
Momentum
- Rank this week
- Not ranked yet
- Best rank
- None yet
- GitHub stars
- 3,686
GitHub numbers as of Nov 2, 2026. Updated weekly.
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is One Skill to Rule Them All free?
- Yes. It is free and open source (CC-BY-4.0 license).
- Do I need to know how to code to use One Skill to Rule Them All?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does One Skill to Rule Them All work with?
- According to its own documentation, it works with Claude Code, Claude Cowork, Claude apps, Hermes, and Openclaw.
- What is One Skill to Rule Them All good for?
- Spotting repeated steps that should become a reusable skill, improving existing AI skills based on corrections made during work, keeping a running log of changes to a library of AI instructions, and tracking recurring mistakes an AI assistant makes across projects.
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