:vertical_traffic_light: Check your GraphQL query strings against a schema.
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MarkdownLint Command Line Interface
- markdownlint
- markdown
Spelling, grammar and style checking on LaTeX documents
- latex
- grammar-checker
- spell-check
- spell-checker
plugins to check (lint) markdown code style
- remark
- remark-lint
- markdown
- lint
Magic number detection for JavaScript
- magic-numbers
- javascript
- code-smells
- clean-code
A RuboCop extension focused on enforcing Rails best practices and coding conventions.
- ruby
- rubocop
- linter
- static-code-analysis
A CSS bookmarklet that puts pink error boxes (with messages in comic sans) everywhere you write bad HTML.
An extension of RuboCop focused on code performance checks.
- ruby
- rubocop
- linter
- static-code-analysis
Universal toolkits for linting, viewing and managing i18n for any frameworks.
CSS selectors complexity and performance analyzer
PHP Magic Number Detector
A static code analysis tool for Crystal
- crystal
- linter
- ameba
- code-analysis
The missing linter and lsp for AI coding assistants. Validate CLAUDE.md, AGENTS.md, SKILL.md, hooks, MCP. Plugin for all major IDEs included, with autofixes.
Magento Coding Standard
- magento
- php
- php-codesniffer
- coding-standard
A Go linter to check that errors from external packages are wrapped
- go
- go-linter
- error
- check
An OCI-based ASDF system distribution and management tool for Common Lisp
The CLI for working with JSON Schema. Covers formatting, linting, testing, bundling, and more for both local development and CI/CD pipelines
- json
- json-schema
- jsonschema
- openapi
Architecture checks for Go projects
- architecture
- go
- golang
- quality
Language server, formatter, and linter for Quarto and other Markdown flavors
- formatter
- pandoc
- quarto
- language-server
Shrink (minify) Pico-8 (& Picotron) carts, as well as other tools (e.g. linting, format conversion, exports)
- pico-8
- minify
- lint
- picotron
English, rewritten in Rust: grammar as trait bounds, pronouns as borrows, and englishc, a compiler with rustc-style diagnostics for prose
Security linter for AI-generated code: catches the exact vulnerabilities Copilot, Cursor and ChatGPT repeatedly produce. SQL injection, hardcoded secrets, JWT bypass, command injection and 15+ more rules. Grade A–F. Zero config. CI/CD ready.
Flake8 plugin for managing type-checking imports & forward references.
- flake8-plugin
- flake8
- typing
- flake8-extensions
Pure-Go SQL parser, formatter, linter and security scanner for 8 dialects. Zero-copy, race-free, with an LSP and MCP server.