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• Code smells

A very fast linter from the Oxc project. Agnes uses it to flag suspicious and error-prone code patterns, import cycles, and risky TypeScript shortcuts such as any, in JavaScript, TypeScript and the script blocks of Vue, Svelte and Astro files.

• Code smells

A fast toolchain for the web. Agnes runs its linter in three passes: style problems in CSS and HTML, overly complex code, and Vue, Svelte and Astro components, where it checks templates, unused code and complexity in their scripts. It also checks Astro accessibility.

• Code smells

The Fast TypeScript Analyzer, written in Rust. It rates how maintainable each file is, based on its complexity and size.

• Code smells

Finds unused files, exports and dependencies, so dead code doesn't pile up unnoticed.

• Duplication

A copy/paste detector. It finds blocks of duplicated code across your project and reports how much of it is repeated.

• Code smells

A modern CSS linter. Agnes runs its recommended rules to catch CSS mistakes such as duplicate selectors and properties or unknown properties, in CSS, SCSS, Sass and Less files and in the style blocks of Vue, Svelte and Astro components.

• Code smells

An offline HTML validator with accessibility checks. It flags broken markup, missing alt text or language attributes, and similar problems.

• Accessibility

An accessibility rules engine from Deque. When accessibility checks are on, Agnes runs it over your static HTML pages to find missing labels, missing alt text, invalid ARIA and similar problems. It can't judge colour contrast without a browser, so that is left out.

• Accessibility

A JavaScript implementation of the browser DOM. It lets axe-core read your HTML in a plain container, with no browser and without running your page's scripts.

• Accessibility

The pluggable JavaScript linter. For the accessibility checks, Agnes runs it with the Vue accessibility plugin and Angular's template accessibility rules on your components.

• Code smells
• Accessibility

Angular's own lint rules, run by ESLint. Agnes uses its recommended rules to flag templates and components that are likely to be wrong, such as negated async pipes or a misspelt two-way binding, and code that has not moved to the current Angular style, in external and inline templates and in the TypeScript. With the accessibility checks on, it also runs Angular's template accessibility rules.

• Code smells
• Security

The official Vue linter. Agnes runs a selection of its rules, the ones that oxlint and Biome do not already cover: props that a component changes, refs used without .value, unused template variables, invalid directives and invalid default props. It also flags v-html, which renders raw HTML, as a security finding to review.

• Code smells
• Security

The official Svelte linter. Agnes runs a selection of its rules that the Svelte compiler does not already cover: each blocks without a key, store misuse, duplicated directives and objects printed in text. It also flags {@html} and target="_blank" links as security findings to review.

• Code smells
• Accessibility

The Svelte compiler. It warns about accessibility problems in components, and about reactivity mistakes and unused styles; Agnes reads those warnings without generating or running any code.

• Security

Looks for committed secrets such as API keys, tokens and private keys. Agnes reports where one was found, never the secret itself.

• Dependencies

The open source vulnerability database. Agnes checks every package in your lockfile against it and reports known advisories, and whether a patch exists.

• Dependencies

The package registry tells us when a dependency you use is deprecated, outdated or hasn't been updated in a long time.