impeccable
The design vocabulary for your coding agent. Steer with polish and bolder, review with critique and audit, catch AI slop before it ships.
Our verdict
A usable project with some maintenance caveats. This assessment is derived from GitHub's own repository metrics on 2026-10-28, not from hands-on testing.
The design vocabulary for your coding agent. Steer with polish and bolder, review with critique and audit, catch AI slop before it ships. The project is written primarily in Rust, released under Apache-2.0, and has 92,627 stars and 5,478 forks on GitHub. 61 contributors have committed to it, and the most recent push was 2026-10-28. The latest tagged release is skill-v4.8.0 (2026-10-26). Figures come from the GitHub API on 2026-10-28 and are refreshed daily; the score below weighs adoption, maintenance, release discipline, contributor breadth, licence clarity and issue hygiene.
Reviewed by AI Review Rating from GitHub API data How we score
Repository
- Licence
- Apache-2.0
- Language
- Rust
- Last push
- 2026-10-28
Releases
-
skill-v4.8.0Skill 4.8.0 -
engine-v0.1.18impeccable engine engine-v0.1.18 -
cli-v4.8.0CLI 4.8.0 -
engine-v0.1.17impeccable engine engine-v0.1.17 -
skill-v4.7.0Skill 4.7.0 -
engine-v0.1.16impeccable engine engine-v0.1.16
Pros and cons
Pros
Pricing
- Free tierYes
- LicenceApache-2.0
- Self-hostYes, source is public
- Public price listNot published
impeccable does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales. Why we do this
Visit impeccable.styleUser reviews
No one has reviewed impeccable here yet. Reviews are moderated before they appear, and our own score is editorial and separate from user ratings, though once reviews land they do lift it.
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Side by side
| Tool | Our score | From | Free tier | Best for | |
|---|---|---|---|---|---|
| impeccable this page | 7.6 | - | Yes | ||
| 🥇Spec Kit | 8 | - | Yes | ||
| 🥈Supabase | 8 | - | Yes | ||
| 🥉Gemini CLI | 7.8 | - | Yes | ||
| Agent Skills | 7.7 | - | Yes | ||
| Context7 | 7.7 | - | Yes | ||
| OpenHands | 7.7 | - | Yes |
Questions
Is impeccable free?
Yes. impeccable advertises a free tier on its own site.
How much does impeccable cost?
impeccable does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales.
Is impeccable open source?
Yes. impeccable is a public repository released under Apache-2.0. You can self-host or inspect the source directly.
How is impeccable scored here?
impeccable scores 7.6 out of 10. That comes from a desk review of public evidence, which is capped at 8.5 out of 10: public pricing, documentation, maintenance signals and how much we could actually verify. Affiliate relationships are excluded from scoring entirely. The full rubric is published on our methodology page.