E2E Test Thinker
UniClipboard/UniClipboard
Analyze the current branch's diff against main and determine which changes are testable via CLI-based end-to-end tests.
Detect missing test coverage and generate test suggestions. An agent skill from ruvnet/ruflo.
Install Test Gaps
$ npx skills add ruvnet/ruflo --skill test-gaps -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ruvnet/ruflo test-gaps --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/ruvnet/ruflo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .claude/skills/test-gaps && 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 "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .claude/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gapsType 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 ruvnet/ruflo --skill test-gaps -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ruvnet/ruflo test-gaps --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .agents/skills/test-gaps && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .agents/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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 ruvnet/ruflo --skill test-gaps -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ruvnet/ruflo test-gaps --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .cursor/skills/test-gaps && 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 "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .cursor/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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/ruvnet/ruflo.git --path plugins/ruflo-testgen/skills/test-gaps--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 ruvnet/ruflo --skill test-gaps -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ruvnet/ruflo test-gaps --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .gemini/skills/test-gaps && 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 "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .gemini/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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 ruvnet/ruflo test-gapsInstalls 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 ruvnet/ruflo --skill test-gaps -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .github/skills/test-gaps && 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 "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .github/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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 ruvnet/ruflo --skill test-gaps -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ruvnet/ruflo test-gaps --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ruflo-testgen/skills/test-gaps .opencode/skills/test-gaps && 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 "test-gaps" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-testgen/skills/test-gaps into .opencode/skills/test-gaps/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-gaps", 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
test-gaps- GitHub stars
- 74k
- Token cost
- ~214 tokens
- SKILL.md length
- 29 words
- Files
- 1
- Skills in repo
- 264
- Repo updated
- First seen
- Licence
- MIT
At a glance
Detect missing test coverage and generate test suggestions. An agent skill from ruvnet/ruflo.
- The user asks about coverage gaps
- Calls npx
- What tests to write next
- Also after adding a feature to find what still needs tests
What it does
Test Gaps is an agent skill from ruvnet/ruflo. Detect missing test coverage and generate test suggestions. Use when the user asks about coverage gaps, untested code, or what tests to write next; also after adding a feature to find what still needs tests.
Its SKILL.md is about 210 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Test coverage and Test generation. The repository describes itself as: 🌊 The original agent harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory…. The licence is MIT.
When your agent uses it
- The user asks about coverage gaps
- What tests to write next
- Also after adding a feature to find what still needs tests
Example prompts
- “/test-gaps”
Requirements
- Node.js
- Pre-approved tools (allowed-tools): Bash(npx *), mcp__plugin_ruflo-core_ruflo__hooks_worker-dispatch, Read, Grep
What it can do on your machine
Read from SKILL.md and the folder at commit de590e1. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash(npx *)mcp__plugin_ruflo-core_ruflo__hooks_worker-dispatchReadGrep
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.
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
Test Gaps loads about 214 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 29 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); files beside SKILL.md are not scanned.
SKILL.md
The full file from ruvnet/ruflo at commit de590e1, republished under its MIT licence (© ruvnet). 29 words, ~214 tokens.
Download SKILL.mdSave it as
.claude/skills/test-gaps/SKILL.md (or your agent's skills folder).- name
- test-gaps
- description
- Detect missing test coverage and generate test suggestions. Use when the user asks about coverage gaps, untested code, or what tests to write next; also after adding a feature to find what still needs tests.
- allowed-tools
- Bash(npx *), mcp__plugin_ruflo-core_ruflo__hooks_worker-dispatch, Read, Grep
- argument-hint
- [--path PATH] [--limit N]
Find test coverage gaps via CLI:
npx @claude-flow/cli@latest hooks coverage-gaps --format table --limit 20
npx @claude-flow/cli@latest hooks coverage-route --task "add auth tests"
npx @claude-flow/cli@latest hooks coverage-suggest --path src/Or dispatch the testgaps worker via MCP:
mcp__plugin_ruflo-core_ruflo__hooks_worker-dispatch({ trigger: "testgaps" })
For continuous detection, use /loop with the loop-worker skill targeting the testgaps worker.
© ruvnet, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in plugins/ruflo-testgen/skills/test-gaps of ruvnet/ruflo.
Open the folder on GitHubat commit de590e1
Compare with similar skills
Test Gaps 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 |
|---|---|---|---|---|---|---|
| Test Gaps this skillruvnet/ruflo | 74k | — | ~214 | Automated safety check: Pass | MIT | |
| E2E Test ThinkerUniClipboard/UniClipboard | 1.8k | — | ~1.7k | Automated safety check: Pass | AGPL-3.0 | |
| Ralph Coveragejvm-skills/jvm-skills | 140 | — | ~683 | Automated safety check: Pass | Apache-2.0 | |
| Designing TestsCloudAI-X/opencode-workflow | 275 | — | ~2.9k | Automated safety check: Pass | MIT | |
| Mutation Testingproffesor-for-testing/agentic-qe | 494 | — | ~1.7k | Automated safety check: Pass | MIT | |
| Write Testsgnomeria/usbtree | 688 | — | ~622 | Automated safety check: Pass | MIT |
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Ralph Coverage
jvm-skills/jvm-skills
Run Ralph in coverage mode — iteratively write tests for untested classes until coverage targets are met.
Designing Tests
CloudAI-X/opencode-workflow
Guides test strategy, TDD/BDD approaches, test coverage planning, and testing best practices.
Mutation Testing
proffesor-for-testing/agentic-qe
Test quality validation through mutation testing, assessing test suite effectiveness by introducing code mutations and measuring kill rate.
Write Tests
gnomeria/usbtree
Author tests that match the repo's stack and existing test style, at the cheapest level that catches the regression.
Mutation Test
jmagly/aiwg
Run mutation testing to validate test quality beyond code coverage.
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Related
Categories
Questions about Test Gaps
What does Test Gaps do?
Detect missing test coverage and generate test suggestions. An agent skill from ruvnet/ruflo. Test Gaps is an agent skill from ruvnet/ruflo. Detect missing test coverage and generate test suggestions.
When should I use Test Gaps?
Test Gaps fits situations like: the user asks about coverage gaps; what tests to write next; also after adding a feature to find what still needs tests.
How do I install Test Gaps in Claude Code?
Run `npx skills add ruvnet/ruflo --skill test-gaps -a claude-code`. Or copy the skill folder (plugins/ruflo-testgen/skills/test-gaps in ruvnet/ruflo) into .claude/skills/test-gaps in your project. Claude Code loads it when a task matches its description.
How do I install Test Gaps in Codex?
Run `npx skills add ruvnet/ruflo --skill test-gaps -a codex`. Or copy the skill folder (plugins/ruflo-testgen/skills/test-gaps in ruvnet/ruflo) into .agents/skills/test-gaps in your project. Codex loads it when a task matches its description.
Can I use Test Gaps 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 ruvnet/ruflo --skill test-gaps -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/test-gaps, .gemini/skills/test-gaps, .github/skills/test-gaps and .opencode/skills/test-gaps in your project.
What does Test Gaps need to run?
Going by SKILL.md and its folder, Test Gaps needs the command-line tools its instructions call (npx). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Bash(npx *), mcp__plugin_ruflo-core_ruflo__hooks_worker-dispatch, Read, Grep.
Does Test Gaps access the network?
SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Test Gaps 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. Review the folder before installing.
What licence does Test Gaps use?
Test Gaps is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Test Gaps use?
About 214 tokens (SKILL.md is roughly 856 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Test Gaps?
Skills that share tags, products or a category with Test Gaps: E2E Test Thinker (UniClipboard/UniClipboard, 1.8k stars), Ralph Coverage (jvm-skills/jvm-skills, 140 stars), Designing Tests (CloudAI-X/opencode-workflow, 275 stars) and Mutation Testing (proffesor-for-testing/agentic-qe, 494 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Test Gaps?
ruvnet (a GitHub user) maintains it in ruvnet/ruflo, which has 74,012 GitHub stars. The repository holds 264 skills in this directory. The repository was last updated on October 7, 2026.
Source: ruvnet/ruflo on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.