Qlty - Code Quality and Coverage
Code quality and coverage done right. Linting, formatting, security, maintainability, and coverage all in a free, open Rust CLI.
Categories:
Qlty automates code quality analysis, test coverage enforcement, linting, security checks, and AI-powered autofixes for every pull request, designed for developers and AI agents working on multi-language codebases.
🚀 Overview
Qlty is a cloud-based platform that unifies code quality and coverage tools, providing instant feedback on pull requests without requiring CI configuration. It handles linting, formatting, security scanning, duplication detection, complexity measurement, and test coverage across dozens of languages and tools.
This project solves reviewer fatigue from nitpick reviews, inconsistent linting results, slow feedback loops, and challenges in multi-language monorepos by automating routine checks and offering AI-generated fixes for ~90% of issues. It allows teams to enforce standards consistently while focusing human effort on architecture and logic.
Built originally by Code Climate (spun out to Qlty Software in Nov 2024), it's for development teams, indie makers, and organizations adopting AI code generation who need fast, reliable quality gates. We built it to make high-quality code the default, accelerating delivery without sacrificing standards.
✨ Key Features
- Automated Code Review (instant pass/fail statuses, quality feedback on PRs, customizable triage rules)
- AI Autofix Suggestions (generates fixes for ~90% of lint issues to boost adoption)
- One-Click Auto-Format (amends PRs with formatting changes instantly)
- Baseline Analysis (ignores pre-existing issues, focuses on new code only)
- Coverage Gates & Diff Coverage (enforce thresholds on PR diffs, server-side merging)
- Qlty CLI (free open-source Rust tool, 3x faster, supports 70+ linters/formatters/security tools, monorepo-friendly)
- Upcoming: More AI enhancements and plugin support
🛠 Tech Stack
- CLI: Rust
- Integrations: GitHub App, GitHub Actions, CircleCI Orb
- Analysis: 70+ plugins (e.g., ESLint, RuboCop, biome, Trivy, Bandit)
- Auth: GitHub OAuth
- Hosting: Cloud-based (no CI required)
👥 Who Is This For?
This project is useful for:
- Developers who want to ___automate linting and get AI fixes locally or on PRs
- Teams looking for ___consistent quality gates in multi-language monorepos
- Indie makers building ___polyglot apps without heavy CI setup
📸 Screenshots / Demo
- Live demo: https://qlty.sh/
- GitHub: https://github.com/qltysh/qlty
🔥 Project Status
- 🟢 Actively building
Last updated: 2026-03-24
❓ FAQ
Is this project free?
Freemium — CLI is completely free with unlimited use for private repos; cloud analysis free for unlimited private contributors.
Is the source code available?
Yes — https://github.com/qltysh/qlty (CLI codebase) No for the cloud platform
Can I contribute?
Yes, open issues or submit PRs on the GitHub repo for the CLI; provide feedback via docs.qlty.sh or hello@qlty.sh.
📬 Contact & Links
- Website: https://qlty.sh/
- GitHub: https://github.com/qltysh
- Twitter/X: https://x.com/qltysh
- Email: hello@qlty.sh
Built with ❤️ and kept warm on WarmIndex.
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