Best test generation skills for Claude Code, Codex and other agents.

Writes a Playwright end-to-end test from a prompt, runs it against a live Appsmith deployment and retries with fixes up to three times until it passes.

appsmithorg/appsmith

Checks that every Python code block in a Markdown file actually compiles and runs, by extracting each block to a temporary file, executing it in an isolated subprocess, and writing a pass/fail…

google/adk-python

Run Wix Engine (mobile-apps-engine) iOS E2E tests locally to validate RNN changes.

wix/react-native-navigation

Rules for writing, fixing and reviewing pytest unit tests that are hermetic: behavior-focused, deterministic, isolated and cheap to run.

dimensionalOS/dimos

EMC pre-compliance risk analysis for KiCad PCB designs — 18 check categories, 44 rule IDs covering ground planes, decoupling, I/O filtering, switching harmonics, clock routing, differential pair…

aklofas/kicad-happy

Run SWIG test suite for specific languages. An agent skill from swig/swig.

swig/swig

Testing framework for evaluating Databricks skills. An agent skill from databricks-solutions/ai-dev-kit.

databricks-solutions/ai-dev-kit

Comprehensive QA and testing skill for quality assurance, test automation, and testing strategies for ReactJS, NextJS, NodeJS applications.

nicepkg/auto-company

Generates a complete agent skill for a target tool, API, library or workflow through a seven-phase pipeline that ends with testing, tuning and packaging for several platforms.

AgentSkillOS/SkillAnything

Generate comprehensive test plans, manual test cases, regression test suites, and bug reports for QA engineers.

meshery/meshery-operator

Adds integration or unit tests to an OpenROAD module: writes the Tcl test, generates golden files and registers it in both CMake and Bazel.

The-OpenROAD-Project/OpenROAD

Statically pairs source files with test files to list code that no test references, using Roslyn for C# or tree-sitter for many languages, with no build.

dotnet/skills

Fixes an OpenROAD bug from a GitHub issue or error code: finds the root cause, implements the fix, adds a regression test and prepares a signed-off commit.

The-OpenROAD-Project/OpenROAD

Evaluate and improve GenAI models and agents using the Google GenAI Evaluation SDK.

GoogleCloudPlatform/vertex-ai-samples

Generates Vitest tests for every runnable code example on a JavaScript concept documentation page, following a four-phase extraction and conversion process.

leonardomso/33-js-concepts

A skill your agent uses when asked to run Design Error Detection (quick defect scan), find design errors in a Simulink model, perform root cause analysis on DED findings, fix division-by-zero…

matlab/simulink-agentic-toolkit

自主学习型测试文档生成器。从需求文档（Markdown）生成测试用例 XMind 文件，支持持久化记忆和持续学习。当用户提到"生成测试用例"、"根据需求生成测试"时触发。

342164796/generate-test-cases

Run or add ScottPlot 5 tests. Use for unit-test and cookbook-test work; unless explicitly asked otherwise, restrict manual test execution to the…

ScottPlot/ScottPlot

Turns a code change into one committed, passing Playwright end-to-end spec by resolving the change scope and handing authoring to a companion skill.

comet-ml/opik

Step-by-step guide to writing the mandatory integration tests for syncable metadata entities in Twenty's server, covering failures and CRUD success cases.

twentyhq/twenty

Drives a real browser through the kane-cli tool and designs requirement-linked test suites from a PRD or a plain description, with mobile and cloud-grid runs.

LambdaTest/kane-cli

A skill your agent uses when developing PenguinHarness itself — changing packages/{core,server,web,cli,desktop,landing,docs,skills}, the built-in model catalog, the installers or the release…

Prism-Shadow/penguin-harness

Create interactive PHP test case scripts for Dolibarr ERP/CRM that allow users to setup test data, view results via direct links, and tear down (clean up) the data.

Dolibarr/dolibarr

Launch and drive the real cc-safety-net CLI — the hook decision path, explain, status/doctor, logs, and the local policy GUI — against an isolated home, capturing evidence.

kenryu42/cc-safety-net

Inspect a ChatGPT Apps MCP server codebase and generate chatgpt-app-submission.json with app info suggestions, tool hint justifications, test cases, and negative test cases, then report review-check…

nteract/semiotic

Testing workflow skill for finding high-value test candidates, writing focused tests, generating realistic workloads, reviewing test value, and diagnosing test-suite health.

workersio/skills

Write tests, add test coverage, unit test, or add missing tests for Bitwarden iOS.

bitwarden/ios

Coordinate heavy local workloads across worktrees, processes, and subagents — benchmarks and timing-sensitive gates run exclusively on a quiesced machine, while builds, test suites, regeneration…

nooga/let-go

A skill your agent uses when running a previously designed distributed-systems test plan against a real or simulated cluster — driving fault injection, workload, chaos scenarios, linearizability /…

shenli/distributed-system-testing

Check whether a Playwright, Puppeteer, Selenium or CDP-driven browser presents a coherent fingerprint, using liarjs as a library against a Page you already have - navigator.webdriver, HeadlessChrome…

liarjsdev/liarjs-skills

ALWAYS LOAD THIS SKILL when working with FileServer, SMB, SMB2, SMB3, CIFS, file sharing, MS-SMB2, MS-FSCC, MS-FSA, MS-DFSC, MS-FSRVP, MS-RSVD, MS-SQOS, or any file server protocol test…

microsoft/WindowsProtocolTestSuites

Cut a new tuition release — verify release notes, tuition.asd version, README currency, a clean tree, and a green test suite, then tag vX.Y.Z and push so CI builds the GitHub release.

atgreen/cl-tuition

Parse a Go e2e test from tests/e2e/, translate each step to kubectl and az CLI commands, and interactively replay the test against a live cluster.

kubernetes-sigs/cloud-provider-azure

Writes Vitest tests following project patterns: tests/ directories, vi.mock() for module mocking with vi.hoisted() for test-time factories, global LLM mock from src/test/setup.ts, environment…

caliber-ai-org/ai-setup

Validate Con's local socket control plane against a real running app session, and write/run con-test integration tests.

nowledge-co/con-terminal

Audit, plan, write, and verify unit tests for Python projects using pytest.

areed1192/finance-news-aggregator

Design, run, and analyze AI test suites on Rhesis — explore endpoints, build test foundations from a spec, create requirements and metrics, execute tests, and analyze results.

rhesis-ai/rhesis

Write Jest integration and unit tests for the Grafana Synthetic Monitoring app using React Testing Library, MSW, and src/test helpers.

grafana/synthetic-monitoring-app

Run the Antigravity CLI (Gemini) as a collaborating AI inside Claude Code, with intelligent model routing across the software development lifecycle.

yuting0624/antigravity-for-claude-code

Adds a new end-to-end (e2e) test suite for the Crowdin CLI under tests/e2e/suites/, exercising real CLI commands against a freshly-created Crowdin project.

crowdin/crowdin-cli

Design comprehensive test cases using PICT (Pairwise Independent Combinatorial Testing) for any piece of requirements or code.

omkamal/pypict-claude-skill

Run the netboxbranching plugin's Django test suite against a local NetBox checkout.

netboxlabs/netbox-branching

Adversarial verification layer for reviewing agent-generated or otherwise untrusted implementations.

werf/trdl

Converts test suites from external eval frameworks into the Margin Eval suite format.

Margin-Lab/evals

Run a mobile QA checklist on a physical Android device over adb for tlon-apps, then triage what fails into fixes.

tloncorp/tlon-apps

A skill your agent uses when adding or modifying JET tests. An agent skill from aviatesk/JET.jl.

aviatesk/JET.jl

Explores a terminal app's navigation with bounded breadth-first search and turns the discovered paths into replayable acceptance tests.

pproenca/agent-tui

Run targeted Sampler test scopes to validate changes quickly and safely, then run the full test suite when needed for confidence before PRs.

gaelcolas/Sampler