code-quality
Skill1 starsChanged 16 days agoMITView on GitHub
Run Crapper, Dryer, and Mutator for complexity, duplication, and mutation-test reports on Clojure, Java, Go, TypeScript, Rust, or Python. Crapper and Mutator also support JavaScript.
77 other projects use a version of this.
Adopted by
Most recently taken up by
- magnusrodseth/dotfilestheir own version, first seen Nov 8, 2026
- KadirHarmanc/nazar-skilltheir own version, first seen Nov 8, 2026
- AndersonAndrad/skillstheir own version, first seen Nov 8, 2026
- Mehul72/skillstheir own version, first seen Nov 8, 2026
- eea/eea.agent.skillstheir own version, first seen Nov 8, 2026
- notque/vexjoy-agenttheir own version, first seen Nov 7, 2026
Used with
Projects with it also use spring-boot, logging-patterns and 9 more.
Other files people use alongside this one.
Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
ffsshhttiikkSkillspring-boot
Spring Boot framework and Java enterprise patterns
Also in 3 projects that use this
DIL8654Skilllogging-patterns
Keep logs structured, correlated, low-noise, and safe for production support. Use when adding operational logging, reviewing observability, or improving diagnostics in .NET services.
Also in 3 projects that use this
mstuder-slalomSkilljpa-patterns
JPA/Hibernate patterns for entity design, relationships, query optimization, transactions, auditing, indexing, pagination, and pooling in Spring Boot.
Also in 3 projects that use this
ffsshhttiikkSkilldesign-patterns
Practical application and coding skills for Design Patterns
Also in 4 projects that use this
glommerSkillpr-workflow
General guidelines for Commits, formatting, CI, dependencies, security
Also in 4 projects that use this
vm0-aiSkillcli-design
Design patterns and conventions for the Okou CLI user experience
Also in 3 projects that use this
Other versions77 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 77
- tursodatabase/turso★ 25ksame name
- superdesigndev/treg★ 7.7ksame name
- doorkeeper-gem/doorkeeper★ 5.5ksame name
- static-web-server/static-web-server★ 2.4ksame name
- piomin/claude-ai-spring-boot★ 1.4ksame name
- microsoft/winappCli★ 1.4ksame name
- glommer/pgmicro★ 1.2ksame name
- vm0-ai/vm0★ 1.2ksame name
- rommapp/argosy-launcher★ 710same name
- waybarrios/opencode-power-pack★ 547same name
67 more not listed
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository57 other files it gives its agents.
- AGENTS.mdAGENTS.md
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The file
We split this skill into the rules it gives an agent
7 rules. 0 are common, 4 are distinctive, and 3 are very specific to this project.
0
Common
Most of the 71 edited versions we read keep these.
4
Distinctive
This author's own choices. Worth a look.
3
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 8
Run the tools and report their output.
- Distinctive: line 11
Run from the target project's root.
- Distinctive: line 13
Check language support for each selected tool and report unsupported inputs as skipped.
- Very specific: line 16
Use uvx to run the pinned upstream tools.
- Distinctive: line 19
Run the selected commands below, appending requested file or directory paths and tool flags.
- Very specific: line 32
Use each tool's --help for options.
- Very specific: line 42
When fresh mutation results are needed after tests or dependencies change, use Mutator's --mutate-all to avoid reusing cached kills for …
“Common” is measured: kept by at least 6 in 10 of the 71 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Code Quality
Run the tools and report their output. Leave source changes and acceptance policy to the caller.
Run from the target project's root. Run all three tools unless a subset is requested. Honor requested paths and flags; without paths, analyze the project. Check language support for each selected tool and report unsupported inputs as skipped.
Use uvx to run the pinned upstream tools. Follow the setup
if uvx is unavailable.
Run the selected commands below, appending requested file or directory paths and tool flags.
crapper_source="git+https://github.com/unclebob/crapper.git@6fd92c4c9bcc56efb64a2f8743d5a2993bcfd42d"
dryer_source="git+https://github.com/unclebob/dryer.git@66ff6d21a42c04afcad89c78a80066176d1294b0"
mutator_source="git+https://github.com/unclebob/mutator.git@a5a0cb803b66e0cdb8bf471b3b08af701d424a41"
uvx --from "$crapper_source" crapper
uvx --from "$dryer_source" dryer
uvx --from "$mutator_source" --with "crapper @ $crapper_source" mutatorUse each tool's --help for options. Supply the project's test or coverage
command when its defaults do not fit. --changed selects uncommitted Git
changes; for a branch comparison, resolve the changed paths against the
requested base and pass those paths explicitly.
Return the commands, analyzed scope, exit statuses, and a concise summary of
the output. Include reports written by this run: .metrics/crap.edn,
.metrics/dry.edn, and .metrics/mutate/ for the respective tools. Distinguish
tool or coverage failures from code findings. Dryer can report duplicates with
exit status 0; Mutator uses 3 for survivors and 2 for a failed baseline.
When fresh mutation results are needed after tests or dependencies change,
use Mutator's --mutate-all to avoid reusing cached kills for unchanged functions.
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
Reviews can't be read right now.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

