Agent skill

Fix Tests

by NeoLabHQ in NeoLabHQ/context-engineering-kit

Systematically fix all failing tests after business logic changes or refactoring

GPL-3.0Auto-check passedDevelopment

Install Fix Tests

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/fix-tests .claude/skills/fix-tests && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .claude/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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

$skill-installer install https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests

Type 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.

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/fix-tests .agents/skills/fix-tests && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .agents/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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.

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/fix-tests .cursor/skills/fix-tests && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .cursor/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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

$ gemini skills install https://github.com/NeoLabHQ/context-engineering-kit.git --path skills/fix-tests

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/fix-tests .gemini/skills/fix-tests && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .gemini/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests

Installs 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).

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/fix-tests .github/skills/fix-tests && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .github/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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.

skills CLI

$ npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install NeoLabHQ/context-engineering-kit fix-tests --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/NeoLabHQ/context-engineering-kit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/fix-tests .opencode/skills/fix-tests && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "fix-tests" agent skill from https://github.com/NeoLabHQ/context-engineering-kit/tree/master/skills/fix-tests into .opencode/skills/fix-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-tests", 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: fix-tests
GitHub stars: 1.7k
Token cost: ~914 tokens
SKILL.md length: 417 words
Files: 1
Skills in repo: 57
Repo updated: Aug 26, 2026
First seen: Oct 8, 2026
Licence: GPL-3.0

At a glance

Systematically fix all failing tests after business logic changes or refactoring

Works in 4 steps: Read sadd skill if available → Discover test infrastructure → Run all tests → …
Tasks that involve Failing and flaky tests
SKILL.md covers User Arguments, Context, Goal and Important Constraints, plus 3 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Fix Tests is an agent skill from NeoLabHQ/context-engineering-kit. Systematically fix all failing tests after business logic changes or refactoring

Its SKILL.md is about 910 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 Development, covering Failing and flaky tests and Refactoring. The repository describes itself as: Hand-crafted Claude Code Skills focused on improving agent results quality. Compatible with OpenCode, Cursor, Antigravity, Gemini CLI, and others. Includes CodeRabbit open-source… The licence is GPL-3.0.

When your agent uses it

Tasks that involve Failing and flaky tests
Tasks that involve Refactoring

Example prompts

“/fix-tests”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

Read sadd skill if available
Discover test infrastructure
Run all tests
Identify all failing test files

What it can do on your machine

Read from SKILL.md and the folder at commit 23e2428. 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
No scripts in the folder and no shell commands in SKILL.md.
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

Fix Tests loads about 914 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 417 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~23
When it runs · the whole SKILL.md, loaded when a task matches: ~914

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 NeoLabHQ/context-engineering-kit at commit 23e2428, republished under its GPL-3.0 licence (© NeoLabHQ). 417 words, ~914 tokens.

Download SKILL.mdSave it as .claude/skills/fix-tests/SKILL.md (or your agent's skills folder).

name: fix-tests
description: Systematically fix all failing tests after business logic changes or refactoring

Fix Tests

User Arguments

User can provide to focus on specific tests or modules:

$ARGUMENTS

If nothing is provided, focus on all tests.

Context

After business logic changes, refactoring, or dependency updates, tests may fail because they no longer match the current behavior or implementation. This command orchestrates automated fixing of all failing tests using specialized agents.

Goal

Fix all failing tests to match current business logic and implementation.

Important Constraints

Focus on fixing tests - avoid changing business logic unless absolutely necessary
Preserve test intent - ensure tests still validate the expected behavior
"Analyse complexity of changes" -
- if there 2 or more changed files, or one file with complex logic, then Do not write tests yourself - only orchestrate agents!
- if there is only one changed file, and it's a simple change, then you can write tests yourself.

Workflow Steps

Preparation

Read sadd skill if available
- If available, read the sadd skill to understand best practices for managing agents
Discover test infrastructure
- Read @README.md and package.json (or equivalent project config)
- Identify commands to run tests and coverage reports
- Understand project structure and testing conventions
Run all tests
- Execute full test suite to establish baseline
Identify all failing test files
- Parse test output to get list of failing test files
- Group by file for parallel agent execution

Analysis

Verify single test execution
- Choose any test file
- Launch haiku agent with instructions to find proper command to run this only test file
  - Ask him to iterate until you can reliably run individual tests
- After he complete try running a specific test file if it exists
- This ensures agents can run tests in isolation

Show full SKILL.md (144 more words)Show less

Test Fixing

Launch developer agents (parallel)
- Launch one agent per failing test file
- Provide each agent with clear instructions:
  - Context: Why this test needs fixing (business logic changed)
  - Target: Which specific file to fix
  - Guidance: Read TDD skill (if available) for best practices how to write tests.
  - Resources: Read README and relevant documentation
  - Command: How to run this specific test file
  - Goal: Iterate until test passes
  - Constraint: Fix test, not business logic (unless clearly broken)
Verify all fixes
- After all agents complete, run full test suite again
- Verify all tests pass
Iterate if needed
- If any tests still fail: Return to step 5
- Launch new agents only for remaining failures
- Continue until 100% pass rate

Success Criteria

All tests pass ✅
Test coverage maintained
Test intent preserved
Business logic unchanged (unless bugs found)

Agent Instructions Template

When launching agents, use this template:

The business logic has changed and test file {FILE_PATH} is now failing.

Your task:
1. Read the test file and understand what it's testing
2. Read TDD skill (if available) for best practices on writing tests.
3. Read @README.md for project context
4. Run the test: {TEST_COMMAND}
5. Analyze the failure - is it:
   - Test expectations outdated? → Fix test assertions
   - Test setup broken? → Fix test setup/mocks
   - Business logic bug? → Fix logic (rare case)
6. Fix the test and verify it passes
7. Iterate until test passes

Files

Just SKILL.md in skills/fix-tests of NeoLabHQ/context-engineering-kit.

Open the folder on GitHubat commit 23e2428

Compare with similar skills

Fix Tests 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.

Fix Tests compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Fix Tests this skillNeoLabHQ/context-engineering-kit	1.7k	—	~914	Automated safety check: Pass	GPL-3.0	1 mo ago
Build Fixcodewithmukesh/dotnet-claude-kit	755	—	~1.8k	Automated safety check: Pass	MIT	2 mo ago
Test Guidelinesgetsentry/sentry-dart	873	—	~3.1k	Automated safety check: Pass	MIT	today
Code SolvingHoangTheQuyen/think-better	122	—	~3.7k	Automated safety check: Pass	MIT	today
Adk Reviewgoogle/adk-python	22k	—	~1.6k	Automated safety check: Pass	Apache-2.0	today
Refactor Valuesidavidov13/agentic-playwright	225	—	~2.3k	Automated safety check: Pass	MIT	yesterday

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Questions about Fix Tests

What does Fix Tests do?

Systematically fix all failing tests after business logic changes or refactoring. Fix Tests is an agent skill from NeoLabHQ/context-engineering-kit.

When should I use Fix Tests?

Fix Tests fits situations like: tasks that involve Failing and flaky tests; tasks that involve Refactoring.

How do I install Fix Tests in Claude Code?

Run `npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a claude-code`. Or copy the skill folder (skills/fix-tests in NeoLabHQ/context-engineering-kit) into .claude/skills/fix-tests in your project. Claude Code loads it when a task matches its description.

How do I install Fix Tests in Codex?

Run `npx skills add NeoLabHQ/context-engineering-kit --skill fix-tests -a codex`. Or copy the skill folder (skills/fix-tests in NeoLabHQ/context-engineering-kit) into .agents/skills/fix-tests in your project. Codex loads it when a task matches its description.

Can I use Fix Tests 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 NeoLabHQ/context-engineering-kit --skill fix-tests -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fix-tests, .gemini/skills/fix-tests, .github/skills/fix-tests and .opencode/skills/fix-tests in your project.

What does Fix Tests need to run?

SKILL.md names no scripts, command-line tools or credentials: Fix Tests is instructions for the agent only.

Does Fix Tests 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 Fix Tests 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 Fix Tests use?

Fix Tests is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Fix Tests use?

About 914 tokens (SKILL.md is roughly 3.7k 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 Fix Tests?

Skills that share tags, products or a category with Fix Tests: Build Fix (codewithmukesh/dotnet-claude-kit, 755 stars), Test Guidelines (getsentry/sentry-dart, 873 stars), Code Solving (HoangTheQuyen/think-better, 122 stars) and Adk Review (google/adk-python, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Fix Tests?

NeoLabHQ (a GitHub organization) maintains it in NeoLabHQ/context-engineering-kit, which has 1,749 GitHub stars. The repository holds 57 skills in this directory. The repository was last updated on August 26, 2026.

Source: NeoLabHQ/context-engineering-kit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Fix Tests

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Fix Tests

User Arguments

Context

Goal

Important Constraints

Workflow Steps

Preparation

Analysis

Test Fixing

Success Criteria

Agent Instructions Template

Files

Compare with similar skills

Similar skills

More from NeoLabHQ/context-engineering-kit

Related

Questions about Fix Tests