Functional testing

API testing: 8 skills (api-chaos-runner, api-testing-getting-started, karate-testing, postman-collections, restassured-testing, restler-fuzzing, schemathesis-fuzzing, tavern-testing) and 2 agents (api-test-author, api-test-tool-selector).

BDD pipelines: 10 skills (acceptance-test-from-criteria, bdd-getting-started, bdd-step-library-curator, behave-testing, cucumber-testing, gherkin-from-stories, living-documentation-publisher, manual-step-to-gherkin, reqnroll-testing, specflow-testing) and 2 agents (bdd-scenario-author, gherkin-style-reviewer).

Contract testing for microservices: 5 skills (contract-compatibility-gate, graphql-schema-regression, openapi-contract-diff, pact-contract-testing, protobuf-compat-checking) and 2 agents (contract-drift-investigator, contract-test-scaffolder).

Desktop application testing across Windows (WinAppDriver, Appium-Windows), macOS (XCTest UI, Apple Accessibility Inspector), Linux (AT-SPI), Electron (Playwright _electron API), and Qt (QtTest framework)

Embedded C/C++ testing: GoogleTest on ARM, ThrowTheSwitch Unity-C and Ceedling, gcov coverage, QEMU system emulation

Game engine testing (Unity, Unreal, Godot), platform certification overview (Sony TRC, Nintendo Lotcheck, MS XR, Steam Direct), multiplayer state machine coverage, and gameplay recording/replay

Mobile + mobile-web E2E testing: 11 skills covering xcuitest-suite, espresso-suite, appium-testing, detox-testing, maestro-flows, flutter-testing, mobile-device-matrix-toolkit, mobile-web-emulation-runner, touch-gesture-tester, mobile-web-perf-budget, mobile-a11y-test-author - plus 3 agents (mobile-driver-selector, mobile-test-author, mobile-test-scaffolder).

Mutation testing across languages: 5 skills (mull-mutation, mutmut-mutation, pitest-mutation, stryker-mutation, stryker-net-mutation) and 2 agents (mutation-survivor-explainer, mutation-tool-selector).

Property-based testing libraries: 5 skills covering Hypothesis (Python), fast-check (JS/TS), proptest (Rust), jqwik (JVM), and QuickCheck (Haskell) + ScalaCheck - each ships authoring + run + shrinking + CI integration - plus 3 agents (property-based-test-author, property-based-tool-selector, vacuous-property-critic).

Go + Rust unit testing per-framework wrappers: 5 skills (cargo-test, ginkgo-tests, go-rust-mocking, go-test, rstest-tests) and 2 agents (go-rust-framework-selector, go-rust-test-author).

JS/TS unit testing per-framework wrappers: 5 skills (ava-tests, jasmine-tests, jest-tests, mocha-tests, vitest-tests) and 1 agent (js-test-author). Per-framework lifecycle (configure / run / mock / coverage / CI). Does not duplicate qa-test-review test code hygiene.

JVM unit testing per-framework wrappers: 6 skills (assertj, junit5-tests, kotest-tests, scalatest, spock-tests, testng-tests) and 2 agents (jvm-framework-selector, jvm-test-author).

.NET unit testing per-framework wrappers: 4 skills (fluentassertions, mstest-tests, nunit-tests, xunit-tests) and 2 agents (dotnet-test-author, dotnet-test-framework-selector).

Python unit testing per-framework wrappers: 5 skills (doctest-tests, nose2-tests, pytest-asyncio-patterns, pytest-tests, unittest-tests) and 1 agent (python-test-author).

Web E2E framework wrappers + cross-browser strategy and grids: 8 skills (playwright-testing carrying the cross-browser matrix reference, cypress-testing, selenium-testing, webdriverio-testing, cloud-grid-e2e covering BrowserStack / Sauce Labs / LambdaTest, selenium-grid-4-runner for the self-hosted grid, browser-matrix-strategy-reference with the T1/T2/T3 tiering + compatibility budget + matrix review checklist, and the web-e2e-overview decision guide) and 2 agents (playwright-codegen-reviewer, which also reviews Cypress Studio recordings, and automation-harness-bootstrapper, which scaffolds a full E2E harness skeleton for a repo with no suite).