test-quality

Portable AI code quality reviews for Codex, Cursor, Copilot and other coding agents: six Agent Skills for architecture, technical debt, tests and remediation.

Playwright and Cypress E2E testing skills for AI agents. Generate Playwright tests, review test quality, and debug failures in Claude Code and Codex.

Mutation Testing for Ruby

Generates a test suite from acceptance criteria, then converges code against it with an agent that never sees those criteria.

Stops your coding agent from finishing with green tests that check nothing. Mutagate plants small bugs in the code under test. If the agent's new tests catch fewer than 80%, it gets sent back to write better ones. Runs in the background, one file at a time. Claude Code, Codex, OpenCode, Pi · Java, Kotlin, Python, TS/JS, Go, C#.

🧪 Intelligent test analysis tool that finds duplicate and redundant tests using coverage analysis. Improve test suite quality with detailed reports and pytest integration.

Mutation testing for GDScript and Godot: find the bugs your green tests would miss.

Static analysis tool that scores TypeScript tests across 6 quality dimensions. Works with Jest, Vitest, Playwright, Cypress, and Mocha.

AI-powered GitHub Action that analyzes test quality, provides scores, identifies issues, and suggests improvements through OpenAI's GPT models. Posts detailed reports directly to your pull requests.

Find weak tests before they become a false-green CI. Deterministic test-effectiveness analysis for JavaScript & TypeScript: no-assertion & trivial-assertion detection, 0-100 suite score, PR reviews via GitHub Action. Zero config: npx trashtests scan. Works with Jest, Vitest, Mocha & Ava.

Static Playwright test-quality grading with actionable findings and example reports.

Verification system that catches coding agents falsely claiming task completion. Runs 4 parallel checks (file integrity, test quality, scope narrowing, optional LLM judge) over task+claim+diff and returns a weighted 0-100 confidence score with evidence.

Fast, extensible mutation testing engine powered by Rust. Built for Dart, Flutter, and beyond.

Automated chaos testing for Python — fault injection, property assertions, and stateful exploration

Find false-green tests: tests that pass without verifying anything. Deterministic Python/pytest AST scanner (C1-C59 + PL config-audit), zero-dep, CI-ready.

Run a canfail declaration in one GitHub Actions step, and fail for a stated reason.

Agent skill + manifesto to audit and clean up test suites: detect test smells and refactor safely

Static analyzer for JavaScript and TypeScript test suites: finds tests that can pass without testing anything. Runs locally, never runs your tests.

Detect weakened pytest tests with repeatable evidence.

Local-first MCP server that runs isolated mutation testing against a codebase to expose the gaps its test suite does not cover. Wraps StrykerJS, cosmic-ray, cargo-mutants and Infection behind one tool surface.