By testland
Visual regression testing: 7 skills (percy-visual-regression-testing, chromatic-visual-regression-testing, playwright-snapshots, storybook-visual-regression-testing, responsive-breakpoint-runner, visual-baseline-conventions, visual-baseline-gate) and 2 agents (visual-diff-classifier, visual-baseline-curator).
Builder agent that proposes a coverage-optimal initial baseline set for a Storybook (or page-driven app), generates the matching engine config (Chromatic story parameters / Percy widths / Playwright projects / Storybook test-runner postVisit hook), and writes the files into the repo. Use when starting visual regression on a project that has none, or auditing an existing baseline set against the conventions.
CI-enforcement orchestrator that aggregates per-diff judgements from visual-diff-classifier into a single pipeline BLOCK / REVIEW / OK verdict via the visual-baseline-gate skill. Use when a visual-regression build has completed and classified diffs are ready to be turned into a hard pass/fail merge-gate decision - closing the advisory-classifier to CI-gate path.
Adversarial reviewer of visual regression diffs. Classifies each diff in a build (Percy / Chromatic / Playwright snapshot report) into one of three categories - intentional, incidental, or regression - with rationale and recommended action. Use when reviewing a visual-test build that the team is about to accept; surfaces "looks intentional but isn't" cases that human reviewers rubber-stamp.
Dispatches a single conceptual visual run across a viewport matrix using whichever engine the project has configured (Percy, Chromatic, Playwright snapshots, Storybook test-runner). Routes per-engine viewport syntax, runs each, aggregates the results into one cross-breakpoint report. Use when a project ships responsive UI and the breakpoint matrix is large enough to need a unifying entry point.
Sets up visual regression coverage for a Storybook project - either via the official @chromatic-com/storybook addon (hosted) or via @storybook/test-runner with a postVisit hook that calls Playwright's toHaveScreenshot (self-hosted). Covers test-runner install, lifecycle hooks (setup / preVisit / postVisit), and CI integration.
Reference catalog for visual regression coverage decisions - which Storybook stories or pages get baselines, how to choose breakpoints, when to mask vs adjust threshold, when to add or remove a baseline, and a decision matrix for picking among Percy / Chromatic / Playwright / Storybook test-runner. Use when designing visual coverage for a new project or auditing an existing baseline set.
Builds a CI release-readiness gate for visual regression. Reads diff classifications from the visual-diff-classifier agent and the engine's acceptance log (Percy / Chromatic build approval, Playwright snapshot --update-snapshots commit), refuses to pass when intentional-looking diffs lack explicit acceptance, emits a single go/no-go verdict with markdown + JSON artifact for the CI step.
Authors Percy visual snapshot tests via the @percy/cli + framework SDK (Playwright, Cypress, Selenium, Storybook), runs them with `percy exec -- <test command>`, configures viewports / masking / ignored regions, and reviews diffs in the Percy build UI. Use when the project ships visual regression coverage to BrowserStack Percy.
Uses power tools
Uses Bash, Write, or Edit tools
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A rigorously curated quality-engineering plugin marketplace for Claude Code. 77 plugins, 695 components, every one rating-gated before merge.
d6 floordocs/REVIEWER_TRAINING.mdSee Quality bar and docs/REVIEWER_CHECKLIST.md.
The marketplace ships three kinds of building block:
qa-api-testing, qa-load-testing). You install only the plugins your
stack needs.great-expectations,
oauth-flow-test-author). Claude loads a skill when your request matches
its trigger; you can also ask for it by name.schema-diff-reviewer reviews a migration diff and returns a findings
table). An agent may preload one or more skills to do its work.Installed components stay dormant until a matching task comes up, so adding a plugin doesn't add noise — it adds capability that activates on demand.
/plugin marketplace add testland/qa
/plugin install <plugin-name>@testland-qa
For example:
/plugin install qa-data-quality@testland-qa
/plugin marketplace add https://github.com/testland/qa
git clone https://github.com/testland/qa ~/.claude/marketplaces/testland-qa
Before you install: plugins run inside your Claude Code session and ship agent instructions and tool wrappers. Anthropic doesn't vet marketplace contents — review a plugin's components before installing it into a sensitive project. Every component here is rating-gated (see Quality bar), but you remain in control of what runs.
New to the marketplace? Install one or two plugins for your role rather than everything — components activate on demand, so a focused set keeps things sharp.
| If you're a… | Try first |
|---|---|
| Manual / exploratory tester | qa-manual-testing · qa-bdd · qa-bug-repro |
| Test automation engineer | qa-web-e2e · qa-api-testing · qa-unit-tests-js |
| Performance engineer | qa-load-testing · qa-chaos-resilience |
| Security tester | qa-sast · qa-secrets · qa-dast |
| Lead / manager / head of quality | qa-roles · qa-test-management · qa-process |
The full catalog is below; for versions and component counts see
CATALOG.md.
Once a plugin is installed, its skills and agents are available to Claude
Code — invoke them by describing the task in plain language. Example with
qa-data-quality:
/plugin install qa-data-quality@testland-qa
great-expectations skill scaffolds an ExpectationSuite + Checkpoint and
wires the results into a CI gate.schema-diff-reviewer agent returns a Critical / Warning / Info findings
table covering breaking-vs-additive changes and downstream impact.Each plugin's README.md lists its skills and agents and what each one does.
npx claudepluginhub testland/qa --plugin qa-visual-regressionContract testing for microservices: 5 skills (pact-contract-testing, openapi-contract-diff, graphql-schema-regression, protobuf-compat-checking, contract-compatibility-gate) and 2 agents (contract-drift-investigator, contract-test-scaffolder).
Flake triage: 2 skills (flaky-test-quarantine, flake-pattern-reference) and 5 agents (e2e-flake-bisector, parallel-isolation-checker, regression-bisector, ai-flake-detector, e2e-test-trend-reporter).
Bug reproduction workflow: 1 skill (bug-report-template) and 8 agents (bug-report-from-recording, bug-repro-builder, crash-stack-trace-analyzer, defect-clusterer, defect-trend-narrator, escape-defect-analyzer, failure-classifier, test-failure-debugger).
API testing: 7 skills (postman-collections, restassured-testing, karate-testing, tavern-testing, schemathesis-fuzzing, restler-fuzzing, api-chaos-runner) plus 2 A2 agents — api-test-tool-selector (picks tool from project markers + goal) and api-test-author (composes the chosen tool to emit one functional test per endpoint + scenario).
Data quality testing for analytical pipelines: 5 skills (dbt-testing, great-expectations, soda-checks, data-quality-gate, data-quality-conventions) and 2 agents (schema-diff-reviewer, data-anomaly-triager).
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