Overview
Impeccable gives agents a shared design vocabulary, records product context in PRODUCT.md, and ships deterministic rules that flag common AI-generated frontend patterns.
What it does
- 24 design commands such as polish, audit and critique
- 59 deterministic design detector rules
- Live browser iteration
- PRODUCT.md project context
Capability source: Project documentation
Who Impeccable fits
Teams that want agent-built interfaces reviewed against explicit design rules.
How you run it
Impeccable runs on infrastructure you manage.
Documented deployment options: npx impeccable install.
Before you choose it
The deterministic rules run without a model; critique commands use your agent's model.
Self-hosting and deployment
- Self-hostable
- Yes
- Cloud / hosted offering
- Not recorded
- Docker noted in deployment tags
- Not recorded
- Deployment tags
- npx impeccable install
- Difficulty
- Easy
Impeccable questions
- What is Impeccable?
- Design guidance for coding agents: one skill, 24 commands, and design detector rules. It is listed under Agent skills on PickOpenSource.
- Is Impeccable open source?
- Yes. Its source code is public on GitHub under the Apache-2.0 license.
- Can you self-host Impeccable?
- Yes. Listed deployment options: npx impeccable install.
- Is Impeccable free?
- Pricing is not recorded in this catalog. Check the official website for hosted plans and edition limits, and the Apache-2.0 license for usage conditions. Self-hosting also requires infrastructure and maintenance.
- What are alternatives to Impeccable?
- Similar agent skills projects include Superpowers, Skills by Matt Pocock, and Ponytail.
- Is Impeccable actively maintained?
- The latest commit on GitHub was October 12, 2026, and the repository has 80k stars.
Related projects
Other approved projects in Agent skills: Superpowers, Skills by Matt Pocock, Ponytail.
Superpowers
A software development method for coding agents, built from composable skills.- Stars
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- License
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Superpowers
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Skills by Matt Pocock
A set of engineering skills Matt Pocock uses daily, written to be small, easy to adapt and composable, and to work with any model instead of owning your whole process.Website GitHubPonytail
A skill that makes coding agents write the smallest change that solves the task.- Stars
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- Hosting
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- Category
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Ponytail
Ponytail is one skill prompt that pushes an agent to reuse existing code and native features before adding dependencies, while keeping validation, error handling, security and accessibility. It adds review and repository audit commands.Website GitHubMaintain Impeccable? Add the README badge
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