Agent skill

Nw Optimize Tests

Minimizes test count while preserving coverage. An agent skill from nWave-ai/nWave.

MITAuto-check passed

Install Nw Optimize Tests

skills CLI

$ npx skills add nWave-ai/nWave --skill nw-optimize-tests -a claude-code

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

GitHub CLI

$ gh skill install nWave-ai/nWave nw-optimize-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/nWave-ai/nWave.git skills-src && mkdir -p .claude/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .claude/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .claude/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-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 nWave-ai/nWave --skill nw-optimize-tests -a codex

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

GitHub CLI

$ gh skill install nWave-ai/nWave nw-optimize-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/nWave-ai/nWave.git skills-src && mkdir -p .agents/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .agents/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .agents/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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 nWave-ai/nWave --skill nw-optimize-tests -a cursor

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

GitHub CLI

$ gh skill install nWave-ai/nWave nw-optimize-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/nWave-ai/nWave.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .cursor/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .cursor/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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/nWave-ai/nWave.git --path nWave/skills/nw-optimize-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 nWave-ai/nWave --skill nw-optimize-tests -a gemini-cli

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

GitHub CLI

$ gh skill install nWave-ai/nWave nw-optimize-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/nWave-ai/nWave.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .gemini/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .gemini/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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 nWave-ai/nWave nw-optimize-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 nWave-ai/nWave --skill nw-optimize-tests -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/nWave-ai/nWave.git skills-src && mkdir -p .github/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .github/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .github/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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 nWave-ai/nWave --skill nw-optimize-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 nWave-ai/nWave nw-optimize-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/nWave-ai/nWave.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/nWave/skills/nw-optimize-tests .opencode/skills/nw-optimize-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 "nw-optimize-tests" agent skill from https://github.com/nWave-ai/nWave/tree/main/nWave/skills/nw-optimize-tests into .opencode/skills/nw-optimize-tests/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nw-optimize-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: nw-optimize-tests
GitHub stars: 617
Token cost: ~1k tokens
SKILL.md length: 384 words
Files: 1
Skills in repo: 106
Repo updated: Sep 16, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Minimizes test count while preserving coverage. An agent skill from nWave-ai/nWave.

Works in 4 steps: APPROVE — full plan, all rows → APPROVE WITH EXCLUSIONS — list row IDs… → REJECT — abort, return findings as… → …
SKILL.md covers Overview, Context Files Required, Timing Baseline and Agent Invocation, plus 6 more sections
Calls git

What it does

Nw Optimize Tests is an agent skill from nWave-ai/nWave. Minimizes test count while preserving coverage. Detects byte-identical pairs, parametrize-inflation, language-guarantee tests, AST-shape tests, stale migration nets. Approval gate before any change.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: AI agents that guide you from idea to working code, with you in control at every step. The licence is MIT.

Example prompts

“Use the nw-optimize-tests skill to minimiz test count while preserving coverage. An agent skill from nWave-ai/nWave”
“/nw-optimize-tests”

Workflow steps

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

APPROVE — full plan, all rows
APPROVE WITH EXCLUSIONS — list row IDs to skip
REJECT — abort, return findings as deferred report
REPLAN — provide new scope or constraint

What it can do on your machine

Read from SKILL.md and the folder at commit da401a8. 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
Shell commands in SKILL.md call:
- git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, 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

Nw Optimize Tests loads about 1k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 384 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~54
When it runs · the whole SKILL.md, loaded when a task matches: ~1k

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 nWave-ai/nWave at commit da401a8, republished under its MIT licence (© nWave-ai). 384 words, ~1,005 tokens.

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

name: nw-optimize-tests
description: Minimizes test count while preserving coverage. Detects byte-identical pairs, parametrize-inflation, language-guarantee tests, AST-shape tests, stale migration nets. Approval gate before any change.
user-invocable: true
argument-hint: [scope] - Optional: a path (e.g. tests/des/unit/), a feature-id (auto-resolves to tests/<id>/), or omit for full unit suite. --reviewer to chain reviewer agent.

NW-OPTIMIZE-TESTS: Test Suite Optimization

Wave: CROSS_WAVE Agent: Trim (nw-test-optimizer) Reviewer: Trim Review (nw-test-optimizer-reviewer)

Overview

Dispatches Trim to inventory a test scope, detect duplication and anti-patterns, propose a consolidation plan, and apply it after explicit approval. Coverage is preserved; production code is never modified. Use after a feature lands, when a suite feels slow or noisy, on weekly audit, or whenever overtesting is suspected.

Context Files Required

The scope path (passed as argument or auto-detected)
~/.claude/skills/nw-test-optimization/SKILL.md — methodology (loaded by agent)

Timing Baseline

Trim compares against the wall-clock figures recorded in the execution-log.json.

Agent Invocation

@nw-test-optimizer

Execute test optimization for {scope}.

Configuration:

scope: <path | feature-id | empty for full unit suite>
approval_required: true # always; gate is non-negotiable
mutation_validation: false # set true for critical scopes (financial, safety, infra)
reviewer_chain: false # set true to dispatch nw-test-optimizer-reviewer after apply

Approval Gate

Trim presents the plan as a markdown table after Phase 3 (PLAN). The orchestrator (or invoking user) responds with one of:

APPROVE — full plan, all rows
APPROVE WITH EXCLUSIONS — list row IDs to skip
REJECT — abort, return findings as deferred report
REPLAN — provide new scope or constraint

No changes are applied without one of these responses. Trim never assumes approval.

Reviewer Chain (optional)

If reviewer_chain: true:

@nw-test-optimizer-reviewer

Validate the optimization output for {scope}.

Reviewer hard-blocks on: production drift, coverage drop without justification, unmapped removal, missing approval gate evidence.

Show full SKILL.md (157 more words)Show less

Success Criteria

Baseline numbers recorded (passed count, coverage %)
Plan presented before any change
Explicit approval received
Production files in diff: 0
Coverage % preserved (or drop documented per skill 5.3)
Atomic commits per consolidation pattern
Final report with deltas and SHAs

Examples

Example 1: Full unit suite audit

/nw-optimize-tests

Trim inventories the unit suite, runs md5sum cross-check, scans for anti-patterns, produces a leverage-sorted plan covering byte-identical pairs and parametrize-inflated files.

Example 2: Scoped to a feature

/nw-optimize-tests lean-wave-documentation

Trim resolves to tests/<feature-id>/ paths from the execution-log.json if available, otherwise scopes to test files referencing the feature-id.

Example 3: Single fat file

/nw-optimize-tests tests/build/unit/test_skill_restructuring.py

Trim probes the single file (315 collected tests), checks migration-collapse lifecycle (skill 3.5), proposes collapse to ~3 tests.

Example 4: With reviewer

/nw-optimize-tests tests/des/unit/ --reviewer

Trim runs the workflow, then dispatches Trim Review for adversarial validation. Reviewer issues YAML verdict.

Out of Scope

Authoring new tests (crafter scope, DELIVER wave)
Production code refactoring (/nw-refactor, crafter scope)
Test infrastructure changes (platform-architect, troubleshooter)

Expected Outputs

git log --oneline {base}..HEAD                  (atomic commits per pattern)
<scope>                                          (test files modified or deleted)
report (returned inline by agent)                (baseline, after, deltas, SHAs)

Files

Just SKILL.md in nWave/skills/nw-optimize-tests of nWave-ai/nWave.

Open the folder on GitHubat commit da401a8

Compare with similar skills

Nw Optimize 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.

Nw Optimize Tests compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Nw Optimize Tests this skillnWave-ai/nWave	617	—	~1k	Automated safety check: Pass	MIT	22 days ago
Detection Engineering Coverage Evaluationgoogle/skills	21k	—	~3.3k	Automated safety check: Pass	Apache-2.0	today
Coveragealirezarezvani/claude-skills	28k	2 repos	~669	Automated safety check: Pass	MIT	1 mo ago
SQL Optimizationgithub/awesome-copilot	40k	2 repos	~2.3k	Automated safety check: Pass	MIT	today
Caveman Optimization EvaluatorJuliusBrussee/caveman	110k	1 repos	~1.2k	Automated safety check: Pass	Apache-2.0	today
Test Coveragethedaviddias/Front-End-Checklist	74k	—	~407	Automated safety check: Pass	MIT	2 days ago

Similar skills

Detection Engineering Coverage Evaluation
google/skills
Official
Automates the end-to-end detection engineering workflow in Google SecOps using MCP tools.
21k GitHub stars~3.3k tokensUpdated today
SecurityAuto-check passed
Coverage
alirezarezvani/claude-skills
Analyze test coverage gaps. An agent skill from alirezarezvani/claude-skills.
28k GitHub starsUsed in 2 repos~669 tokens
Testing & QAAuto-check passed
SQL Optimization
github/awesome-copilot
Official
Universal SQL performance optimization assistant for comprehensive query tuning, indexing strategies, and database performance analysis across all SQL databases (MySQL, PostgreSQL, SQL Server…
40k GitHub starsUsed in 2 repos~2.3k tokens
DatabasesAuto-check passed
Caveman Optimization Evaluator
JuliusBrussee/caveman
Turns a Caveman report-only optimization observation into one minimal code change and a paired baseline evaluation, after the operator picks which to pursue.
110k GitHub starsUsed in 1 repo~1.2k tokens
AI & LLM EngineeringAuto-check passed
Test Coverage
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing CI coverage, automated checks, or test strategy related to Maintain test coverage thresholds.
74k GitHub stars~407 tokensUpdated 2 days ago
Testing & QAAuto-check passed
Prompt Optimizer
affaan-m/ECC
Analyze draft prompts, detect intent and missing context, match ECC commands, skills, and agents, and output a ready-to-paste optimized prompt with diagnosis and rationale — advisory only, never…
275k GitHub starsUsed in 5 repos~3.8k tokens
AI & LLM EngineeringAuto-check passed

Questions about Nw Optimize Tests

What does Nw Optimize Tests do?

Minimizes test count while preserving coverage. An agent skill from nWave-ai/nWave. Nw Optimize Tests is an agent skill from nWave-ai/nWave. Minimizes test count while preserving coverage.

How do I install Nw Optimize Tests in Claude Code?

Run `npx skills add nWave-ai/nWave --skill nw-optimize-tests -a claude-code`. Or copy the skill folder (nWave/skills/nw-optimize-tests in nWave-ai/nWave) into .claude/skills/nw-optimize-tests in your project. Claude Code loads it when a task matches its description.

How do I install Nw Optimize Tests in Codex?

Run `npx skills add nWave-ai/nWave --skill nw-optimize-tests -a codex`. Or copy the skill folder (nWave/skills/nw-optimize-tests in nWave-ai/nWave) into .agents/skills/nw-optimize-tests in your project. Codex loads it when a task matches its description.

Can I use Nw Optimize 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 nWave-ai/nWave --skill nw-optimize-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/nw-optimize-tests, .gemini/skills/nw-optimize-tests, .github/skills/nw-optimize-tests and .opencode/skills/nw-optimize-tests in your project.

What does Nw Optimize Tests need to run?

Going by SKILL.md and its folder, Nw Optimize Tests needs the command-line tools its instructions call (git).

Does Nw Optimize Tests access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Nw Optimize 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 Nw Optimize Tests use?

Nw Optimize Tests 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 Nw Optimize Tests use?

About 1k tokens (SKILL.md is roughly 4k 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 Nw Optimize Tests?

Skills that share tags, products or a category with Nw Optimize Tests: Detection Engineering Coverage Evaluation (google/skills, 21k stars), Coverage (alirezarezvani/claude-skills, 28k stars), SQL Optimization (github/awesome-copilot, 40k stars) and Caveman Optimization Evaluator (JuliusBrussee/caveman, 110k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nw Optimize Tests?

nWave-ai (a GitHub organization) maintains it in nWave-ai/nWave, which has 617 GitHub stars. The repository holds 106 skills in this directory. The repository was last updated on September 16, 2026.

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

Install Nw Optimize Tests

Facts

At a glance

What it does

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

NW-OPTIMIZE-TESTS: Test Suite Optimization

Overview

Context Files Required

Timing Baseline

Agent Invocation

Approval Gate

Reviewer Chain (optional)

Success Criteria

Examples

Example 1: Full unit suite audit

Example 2: Scoped to a feature

Example 3: Single fat file

Example 4: With reviewer

Out of Scope

Expected Outputs

Files

Compare with similar skills

Similar skills

More from nWave-ai/nWave

Questions about Nw Optimize Tests