Best skills for Testing & Review (2026)
improve-codebase-architecture is the best skill for Testing & Review - 1M installs and 253k GitHub stars. Strong alternatives: tdd and codebase-design.
4090 skills for developers in Testing & Review, ranked by real adoption (installs, then GitHub stars). Every pick links to install commands and trust signals.
Ranked by Skillselion · adoption from the skills.sh registry & GitHub · data refreshed October 25, 2026.
The top 10 skills for testing & review
| # | Skill | Stars | Installs |
|---|---|---|---|
| 1 | improve-codebase-architecturecollectionmattpocock · mattpocock/skillsTop pick Safely deepen clusters of shallow modules into cohesive, testable units while respecting their external dependencies. | 253k | 1M |
| 2 | tddcollectionmattpocock · mattpocock/skills Follow test-driven development with a strict red-green-refactor loop when creating reliable features or fixing bugs. | 253k | 1M |
| 3 | codebase-designcollectionmattpocock · mattpocock/skills Shared vocabulary for designing deep modules: improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable. | 253k | 849k |
| 4 | code-reviewcollectionmattpocock · mattpocock/skills Reviews a branch or PR diff on two axes at once: conformance to coding standards plus a code-smell baseline, and whether it actually implements the original spec. | 253k | 788k |
| 5 | google-agents-cli-evalcollectiongoogle · google/agents-cli Accurately evaluate agent trajectories that rely on Google Search grounding instead of regular tool calls. | 5.8k | 509k |
| 6 | migrate-to-shoehorncollectionmattpocock · mattpocock/skills Automatically update TypeScript test files that rely on unsafe `as` type assertions by replacing them with type-safe partial objects from @total-typescript/shoehorn. | 253k | 475k |
| 7 | caveman-reviewcollectionJuliusBrussee · JuliusBrussee/caveman Get ultra-compressed, one-line code review comments that cut noise while keeping every actionable fix. | 104k | 410k |
| 8 | setup-ts-deep-modulescollectionmattpocock · mattpocock/skills Install dependency-cruiser and enforce deep-module boundaries in a TypeScript monorepo so packages expose only root entry points. | 253k | 367k |
| 9 | cavecrewcollectionJuliusBrussee · JuliusBrussee/caveman Delegate coding tasks to specialized subagents that return compressed output, keeping the main context window usable for much longer sessions. | 104k | 357k |
| 10 | analyze-projectcollectionlllllllama · lllllllama/RigorPilot-Skills Get a conservative, read-only map of any deep-learning repository before deciding where to safely insert new agent logic. | 484 | 333k |
Why these skills rank for testing & review
1. improve-codebase-architecture
improve-codebase-architecture ranks #1 of the 4090 skills for Testing & Review by adoption, with 1M installs and 253k GitHub stars. It safely deepen clusters of shallow modules into cohesive, testable units while respecting their external dependencies.
2. tdd
tdd ranks #2 of the 4090 skills for Testing & Review by adoption, with 1M installs and 253k GitHub stars. It follow test-driven development with a strict red-green-refactor loop when creating reliable features or fixing bugs.
3. codebase-design
codebase-design ranks #3 of the 4090 skills for Testing & Review by adoption, with 849k installs and 253k GitHub stars. It shared vocabulary for designing deep modules: improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable.
4. code-review
code-review ranks #4 of the 4090 skills for Testing & Review by adoption, with 788k installs and 253k GitHub stars. It reviews a branch or PR diff on two axes at once: conformance to coding standards plus a code-smell baseline, and whether it actually implements the original spec.
5. google-agents-cli-eval
google-agents-cli-eval ranks #5 of the 4090 skills for Testing & Review by adoption, with 509k installs and 5.8k GitHub stars. It accurately evaluate agent trajectories that rely on Google Search grounding instead of regular tool calls.
Common questions
What is the best skill for Testing & Review?
improve-codebase-architecture is the top-ranked skill for Testing & Review, with 1M installs and 253k GitHub stars - Safely deepen clusters of shallow modules into cohesive, testable units while respecting their external dependencies..
What are the best alternatives to improve-codebase-architecture for testing & review?
Strong alternatives ranked just behind improve-codebase-architecture are tdd and codebase-design. All 4090 options are compared in the table above, ranked by real adoption.
How do I install improve-codebase-architecture?
Run: npx skills add https://github.com/mattpocock/skills --skill improve-codebase-architecture
How are these skills ranked?
By real adoption - installs first, then GitHub stars - across the 4090 skills in the Testing & Review category. Data from the skills.sh registry and GitHub.
More in Testing & Review
See every tool on the Testing & Review hub, browse all skills, or see every best-of shortlist.