Category · Testing & Review
Testing & Review tools
Every Testing & Review tool worth a solo builder's time - the skills, MCP servers, marketplaces and workflows in the Testing & Review category, ranked by community signal and filterable by phase, type and what you're building.
What's in the Testing & Review category
The Testing & Review category collects 706 curated tools across agent skills, marketplaces and plugins. Every one is screened against a single quality bar and ranked by real community signal, so the strongest tools surface first.
These tools span Validate, Build, Ship, Grow and Operate of the build journey — use the filters below to narrow by phase, type or tool, or jump straight to a phase hub to see testing & review tools in the context of everything else that phase needs.
TypeDescription
1Agent BrowserTesting & ReviewskillDrive real browser sessions from the agent CLI to test flows, fill forms, capture screenshots, and extract page data via snapshot refs.404k5.6k
2Improve Codebase ArchitectureTesting & ReviewskillGuide an agent through safely merging shallow modules into deeper units using seams, ports, and adapters instead of risky big-bang refactors.226k121k
3TddTesting & ReviewskillRun a red-green-refactor loop while building features or fixing bugs so tests describe behavior through public APIs instead of brittle implementation checks.214k121k
4Use My BrowserTesting & ReviewskillUse the user live browser session for logged-in flows, DevTools context, and rendered DOM inspection.198k61
5Zoom OutTesting & ReviewskillWhen entering unfamiliar code, invoke to get a higher-level map of modules, callers, and domain glossary terms instead of line-by-line guessing.181k121k
6Caveman ReviewTesting & ReviewskillProduce terse, line-scoped PR review comments with optional severity tags instead of verbose feedback.139k70k
7Requesting Code ReviewTesting & ReviewskillDispatch a subagent with a senior code-reviewer prompt, your plan, and a git SHA range so finished work is checked before you merge or stack more changes.119k221k
8Test Driven DevelopmentTesting & ReviewskillMake your coding agent follow strict test-first red-green-refactor before any feature, bugfix, or refactor production code.118k221k
9Verification Before CompletionTesting & ReviewskillInstall this when you want your coding agent to prove tests, lint, and builds actually pass before it says a task is done or opens a PR.100k221k
10Receiving Code ReviewTesting & ReviewskillTurn messy or authoritative review comments into verified, incremental code changes without performative agreement.96.2k221k
11Webapp TestingTesting & ReviewskillVerify local web apps with Python Playwright—UI behavior, screenshots, and browser logs—with optional managed dev-server startup.90.9k148k
12AuditTesting & ReviewskillGenerate a scored technical quality report—accessibility, performance, theming, responsive layout, and anti-patterns—with P0–P3 severities without auto-fixing code.82.6k35.9k
13Browser UseTesting & ReviewskillAutomate real browser flows—open pages, click by indexed elements, fill forms, screenshot, and scrape—without wiring Playwright scripts by hand.77.6k97.7k
14Playwright CliTesting & ReviewskillDrive Playwright CLI snapshots, eval probes, and test runs from your coding agent when E2E tests fail or selectors are unclear.51.6k11.1k
15Playwright Best PracticesTesting & ReviewskillInstall this when you want your coding agent to author, stabilize, and maintain Playwright suites across E2E, component, API, visual, and accessibility flows.47.7k292
16Request Refactor PlanTesting & ReviewskillTurn a messy refactor idea into a scoped GitHub issue full of tiny, test-aware commits before anyone touches production code.30.5k121k
17QaTesting & ReviewskillRun a conversational QA pass where you describe bugs and the agent files durable, user-facing GitHub issues using your project’s domain language.26.4k121k
18AccessibilityTesting & ReviewskillRun WCAG 2.2–aligned accessibility audits and get concrete HTML/CSS/ARIA fixes before you ship a solo-built web UI.25k2.2k
19ReviewTesting & ReviewskillRun a parallel Standards-and-Spec diff review from a fixed git point through HEAD before you merge or ship a branch.24.4k121k
20Migrate To ShoehornTesting & ReviewskillRefactor TypeScript tests to replace unsafe `as` assertions with @total-typescript/shoehorn helpers like `fromPartial()` for lean partial fixtures.23.7k121k
21Code Review ExcellenceTesting & ReviewskillRun structured, constructive PR and architecture reviews that catch bugs early and teach standards without slowing the team.21.7k36.5k
22VitestTesting & ReviewskillConfigure Vitest browser-like test environments (jsdom, happy-dom, edge-runtime) and per-file overrides so DOM and window APIs work in unit tests.21k5.2k
23Swiftui ProTesting & ReviewskillRun a structured SwiftUI and Swift review for deprecated APIs, data flow, navigation, HIG, accessibility, and performance before merge or release.19.1k4.1k
24RefactorTesting & ReviewskillImprove maintainability of existing code through small, behavior-preserving refactors when structure blocks features or reviews surface smells.17.8k34.6k
25E2e Testing PatternsTesting & ReviewskillGive your coding agent Playwright-ready E2E patterns—config, page objects, and CI settings—so solo builders can add reliable browser tests without reinventing structure.17k36.5k
26Momentic TestTesting & ReviewskillAuthor, run, and maintain browser E2E tests as *.test.yaml with AI-resolved steps and Playwright-backed execution.16.1k12
27Momentic Result ClassificationTesting & ReviewskillTriage failing Momentic browser test runs by classifying failures with MCP-accessible run assets and past-run comparison.16.1k12
28Flutter Add Widget TestTesting & ReviewskillAuthor a Flutter widget test with WidgetTester to verify UI rendering and tap/type/scroll interactions.14.4k2.4k
29Flutter Add Integration TestTesting & ReviewskillAdd integration_test and Flutter Driver to a Flutter app, key widgets for automation, and turn explored MCP user flows into permanent end-to-end tests.14.3k2.4k
30Javascript Testing PatternsTesting & ReviewskillStand up Jest or Vitest suites with mocks, fixtures, and coverage gates so your agent does not ship broken JS/TS.14.2k36.5k
31Web Design GuidelinesTesting & ReviewskillAudit UI code against live Vercel Web Interface Guidelines with terse file:line findings.14.1k5.2k
32Karpathy GuidelinesTesting & ReviewskillKeep agent-written code minimal, explicit, and verifiable whenever you implement, review, or refactor.13.8k171k
33Playwright Generate TestTesting & ReviewskillTurn a written user-flow scenario into a passing Playwright TypeScript test by rehearsing it in the browser via Playwright MCP before generating code.13k34.6k
34Vue Testing Best PracticesTesting & ReviewskillStop false-negative Vue 3 tests by awaiting async component resolution with flushPromises before assertions.12.4k5.2k
35Google Agents Cli EvalTesting & ReviewskillRun agent evals on Google ADK agents that use google_search without picking metrics that always fail.12.4k2.7k
36Fixing AccessibilityTesting & ReviewskillAudit and minimally fix HTML accessibility—ARIA, keyboard paths, focus, contrast, and forms—when you add interactive UI or need WCAG-oriented review before ship.12.1k2.1k
37Firecrawl QaTesting & ReviewskillExploratory and pre-launch QA on a live URL with navigation, forms, responsive checks, and evidence-backed bug reports via Firecrawl.11.5k29
38AntfuTesting & ReviewskillAdopt Anthony Fu’s ESLint flat config so a solo repo gets unified lint plus formatting without Prettier across TS, Vue, React, and related stacks.11.4k5.2k
39Refactor PlanTesting & ReviewskillSequence a safe multi-file refactor with investigation, phased steps, verification, and rollback—without editing code until you confirm the plan.11.1k34.6k
40Sql Code ReviewTesting & ReviewskillReview SQL in your repo for injection risk, permissions, and maintainability before you ship database-backed features.11.1k34.6k
41Javascript Typescript JestTesting & ReviewskillInstall this skill when your agent writes or refactors Jest tests for JavaScript or TypeScript so mocks, async patterns, and structure stay consistent.11k34.6k
42Playwright Explore WebsiteTesting & ReviewskillExplore a live web app with Playwright MCP before you write E2E tests, so you capture real flows, locators, and test ideas.10.9k34.6k
43Webapp TestingTesting & ReviewskillReuse small Playwright helpers—wait loops, console capture, and timestamped screenshots—when agents or scripts stabilize flaky webapp tests.10.9k34.6k
44Pytest CoverageTesting & ReviewskillDrive pytest line coverage to 100% using annotated coverage reports and targeted test additions.10.8k34.6k
45Java JunitTesting & ReviewskillGuide an agent through JUnit 5 unit and parameterized tests in Maven or Gradle Java projects.10.1k34.6k
46Review And RefactorTesting & ReviewskillHave the agent read your repo’s Copilot instruction files, review the codebase, and refactor in place to match those standards without splitting files.10.1k34.6k
47SimplifyTesting & ReviewskillPolish code you just wrote so it matches project conventions and reads clearly without changing behavior.10k349
48React DoctorTesting & ReviewskillRun React Doctor before commit to catch regressions in lint, accessibility, bundle size, and architecture with a 0–100 score.9.2k12.4k
49Refactor Method Complexity ReduceTesting & ReviewskillShrink a named method’s cognitive complexity at or below a threshold by extracting focused helper methods.9.2k34.6k
50Scoutqa TestTesting & ReviewskillRun AI-powered exploratory and accessibility QA on live web apps via the ScoutQA CLI after shipping features or when validating user flows.9.1k34.6k
51Clerk TestingTesting & ReviewskillRun Playwright or Cypress E2E tests against Clerk auth with testing tokens, clerkSetup, and persisted storageState.9.1k46
52Flutter Testing AppsTesting & ReviewskillAdd and structure Flutter unit, widget, and integration tests so regressions are caught before you ship mobile builds.9k2.4k
53Breakdown TestTesting & ReviewskillTurn PRDs, technical breakdowns, and implementation plans into ISTQB-aligned test strategies and GitHub-ready QA task breakdowns before you ship.8.8k34.6k
54Csharp NunitTesting & ReviewskillApply NUnit conventions—fixtures, AAA, and data-driven TestCase patterns—when adding or refactoring C# unit tests in a dedicated test project.8.6k34.6k
55Code Exemplars Blueprint GeneratorTesting & ReviewskillGenerate a tailored AI prompt so your agent scans the repo and writes an exemplars.md of on-pattern code for team standards.8.6k34.6k
56Csharp MstestTesting & ReviewskillWrite MSTest 3.x/4.x unit tests in a separate `[ProjectName].Tests` project with modern assertions and data-driven patterns.8.5k34.6k
57Csharp TunitTesting & ReviewskillGuide an agent to write focused TUnit tests in a separate `[ProjectName].Tests` project on .NET 8+ with AAA structure and fluent `await Assert.That()` assertions.8.5k34.6k
58Polyglot Test AgentTesting & ReviewskillRun a Research → Plan → Implement pipeline to add unit tests that compile, pass, and match project conventions across many languages.8.5k34.6k
59Ast GrepTesting & ReviewskillAuthor and debug YAML ast-grep rules for structural code search, codemods, and lint-style checks in agent or CLI workflows.7.8k724
60Frontend Code ReviewTesting & ReviewskillRun a structured frontend review on pending changes or named `.tsx`/`.ts`/`.js` files before commit or release.7.8k144k
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Testing & Review tools — common questions
What counts as a Testing & Review tool?
It's any agent skill, MCP server, marketplace or workflow whose job is testing & review work. Skillselion groups the whole catalog into a handful of canonical categories so a single page collects every testing & review tool across all four types in one place.
How are Testing & Review tools ranked?
By real community signal — installs, GitHub stars and votes — not paid placement. Sponsored slots, when present, are labelled and kept out of the ranking.
Are these Testing & Review tools free?
The listings are open-source skills, MCP servers, marketplaces and workflows, installable with a single command. Skillselion is an independent directory, not the vendor.