Mutation Testing
jvm-skills/jvm-skills
Bootstrap pitest via the info.solidsoft.pitest Gradle plugin with Kotlin-sane defaults, run mutation tests scoped to changed classes, interpret surviving mutants from mutations.xml, triage…
Measure a project's code coverage and report the coverage number.
Install Coverage
$ npx skills add Amplicode/spring-skills --skill coverage -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Amplicode/spring-skills coverage --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/coverage .claude/skills/coverage && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .claude/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Amplicode/spring-skills/tree/main/skills/coverageType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Amplicode/spring-skills --skill coverage -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Amplicode/spring-skills coverage --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/coverage .agents/skills/coverage && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .agents/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Amplicode/spring-skills --skill coverage -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Amplicode/spring-skills coverage --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/coverage .cursor/skills/coverage && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .cursor/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Amplicode/spring-skills.git --path skills/coverage--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Amplicode/spring-skills --skill coverage -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Amplicode/spring-skills coverage --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/coverage .gemini/skills/coverage && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .gemini/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Amplicode/spring-skills coverageInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Amplicode/spring-skills --skill coverage -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/coverage .github/skills/coverage && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .github/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Amplicode/spring-skills --skill coverage -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Amplicode/spring-skills coverage --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Amplicode/spring-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/coverage .opencode/skills/coverage && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "coverage" agent skill from https://github.com/Amplicode/spring-skills/tree/main/skills/coverage into .opencode/skills/coverage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
coverage- GitHub stars
- 126
- Token cost
- ~526 tokens
- SKILL.md length
- 214 words
- Files
- 6 (incl. scripts, references)
- Skills in repo
- 16
- Repo updated
- First seen
- Licence
- None found
At a glance
Measure a project's code coverage and report the coverage number.
- Coverage needs to be measured — a user asking to run the coverage report
- SKILL.md covers What to cover and Pick the path
- Check the current level
- Also when the task itself calls for it: recording the starting coverage before development
What it does
Coverage is an agent skill from Amplicode/spring-skills. Measure a project's code coverage and report the coverage number. Use whenever coverage needs to be measured — a user asking to run the coverage report or check the current level, and also when the task itself calls for it: recording the starting coverage before development, confirming coverage didn't drop below the committed baseline after a change. Measures the whole project (unit + integration merged) or just one test group — a package/class glob or a subproject.
Its SKILL.md is about 530 tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts and reference files (for example `references/gradle.md`, `references/ide.md` and `references/report.md`).
It sits in Testing & QA, covering Test coverage. It works with Gradle. The repository describes itself as: Amplicode Agent Tools.
When your agent uses it
- Coverage needs to be measured — a user asking to run the coverage report
- Check the current level
- Also when the task itself calls for it: recording the starting coverage before development
- Confirming coverage didnt drop below the committed baseline after a change
Example prompts
- “/coverage”
Requirements
- Docker
What it can do on your machine
Read from SKILL.md and the folder at commit bf19b3c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/, which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Coverage loads about 526 tokens when it runs, and up to ~6.3k if it reads all its reference files. Until then it costs about 120 tokens; SKILL.md has 214 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 214 words (~526 tokens).
“Same two dimensions as the run-tests skill — test type, optionally narrowed to a module / group:”
- name
- coverage
Files
SKILL.md and 5 other files (scripts, references) in skills/coverage of Amplicode/spring-skills.
- SKILL.md
- references/gradle.md
- references/ide.md
- references/report.md
- scripts/coverage_in_ide.kts
- scripts/load_coverage_into_ide.kts
Open the folder on GitHubat commit bf19b3c
Compare with similar skills
Coverage next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Coverage this skillAmplicode/spring-skills | 126 | — | ~526 | Automated safety check: Pass | None | |
| Mutation Testingjvm-skills/jvm-skills | 140 | — | ~6.7k | Automated safety check: Pass | Apache-2.0 | |
| Coverage Kover Gradlejvm-skills/jvm-skills | 140 | — | ~301 | Automated safety check: Pass | Apache-2.0 | |
| Test Writing WorkflowiOfficeAI/AionUi | 33k | 1 repos | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Evaluate PR Testsdotnet/maui | 23k | — | ~2.9k | Automated safety check: Pass | MIT | |
| Requirementsrizsotto/Bear | 6.5k | — | ~2k | Automated safety check: Pass | GPL-3.0 |
Similar skills
Coverage Kover Gradle
jvm-skills/jvm-skills
Run test coverage report using Kover/Gradle and create test improvement plan document
Test Writing Workflow
iOfficeAI/AionUi
Sets the test-writing workflow for the repository: risk-first scenario lists, behavior-focused Vitest tests, a full run before each commit and a coverage target.
- Official
Evaluate PR Tests
dotnet/maui
Reviews the tests added in a pull request for fix coverage, quality, edge cases and test type, and recommends lighter test types where they would do.
Requirements
rizsotto/Bear
Write, modify, or review a requirement file under docs/requirements -- pick the single owning file, keep the text contract-only, name IDs so they need no explanation, and verify cross-references and…
Mutant
mbj/mutant
Run mutant, read mutation reports, fix alive mutations, and verify coverage.
More from Amplicode/spring-skills
All 16 skills in this repoMutation Testing
Amplicode/spring-skills
Set up and run mutation testing with PIT (pitest) on a Gradle project, and read the mutation score.
Amplicode Install
Amplicode/spring-skills
Installs the Amplicode IntelliJ plugin into IntelliJ IDEA (Ultimate/Community) and GigaIDE on the user's machine.
Spring Data Jdbc
Amplicode/spring-skills
Rules and guidelines for working with Spring Data JDBC in the project.
Spring Data Jpa
Amplicode/spring-skills
Rules and guidelines for working with Spring Data JPA in the project.
Spring Explore
Amplicode/spring-skills
Explores a Spring Boot application and builds primary context: tech stack, module structure, domain entities, REST endpoints.
Spring Security Configuration
Amplicode/spring-skills
Creates a Spring Security configuration class with authentication, authorization, and HTTP protection setup.
Related
Works with
Categories
Questions about Coverage
What does Coverage do?
Measure a project's code coverage and report the coverage number. Coverage is an agent skill from Amplicode/spring-skills. Measure a project's code coverage and report the coverage number.
When should I use Coverage?
Coverage fits situations like: coverage needs to be measured — a user asking to run the coverage report; check the current level; also when the task itself calls for it: recording the starting coverage before development; confirming coverage didnt drop below the committed baseline after a change.
How do I install Coverage in Claude Code?
Run `npx skills add Amplicode/spring-skills --skill coverage -a claude-code`. Or copy the skill folder (skills/coverage in Amplicode/spring-skills) into .claude/skills/coverage in your project. Claude Code loads it when a task matches its description.
How do I install Coverage in Codex?
Run `npx skills add Amplicode/spring-skills --skill coverage -a codex`. Or copy the skill folder (skills/coverage in Amplicode/spring-skills) into .agents/skills/coverage in your project. Codex loads it when a task matches its description.
Can I use Coverage in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Amplicode/spring-skills --skill coverage -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/coverage, .gemini/skills/coverage, .github/skills/coverage and .opencode/skills/coverage in your project.
What does Coverage need to run?
SKILL.md names no scripts, command-line tools or credentials: Coverage is instructions for the agent only. Our summary lists: Docker.
Does Coverage access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Coverage safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Coverage use?
No licence was found for Coverage or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Coverage use?
About 526 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.7k tokens, read only when the agent opens those files.
What are the alternatives to Coverage?
Skills that share tags, products or a category with Coverage: Mutation Testing (jvm-skills/jvm-skills, 140 stars), Coverage Kover Gradle (jvm-skills/jvm-skills, 140 stars), Test Writing Workflow (iOfficeAI/AionUi, 33k stars) and Evaluate PR Tests (dotnet/maui, 23k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Coverage?
Amplicode (a GitHub organization) maintains it in Amplicode/spring-skills, which has 126 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 6, 2026.
Source: Amplicode/spring-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.