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megalinter

v1.0.12

Set up, run and fix MegaLinter on any repository: 100+ linters for 69+ languages, 23+ formats and 21+ tooling formats, from CI or locally.

CodexClaude CodeAgent Plugins4 Skills

By OX SecurityLicense: AGPL-3.02.6k GitHub starsUpdated 1 hour ago

Directory evidence

Runtimes
Codex, Claude Code, and Agent Plugins
Parsed components
4 skill or MCP entries
Source updated
Sep 28, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install megalinter for Codex and Claude Code

Installs for the current user
codex plugin marketplace add oxsecurity/megalinter
codex plugin marketplace upgrade megalinter
codex plugin add megalinter@megalinter

Paste and run these commands in a terminal with Codex. They add and refresh the megalinter catalog, then install this plugin.

Compatibility: the page URL and API slug “megalinter” remain stable.

  • Codex: megalinter@agent-plugin-marketplace → megalinter@megalinter

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/oxsecurity/megalinter

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

megalinter/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── plugin.json
├── skills/megalinter/SKILL.md
├── skills/megalinter-check/SKILL.md
├── skills/megalinter-fix/SKILL.md
└── skills/megalinter-setup/SKILL.md

Included Skills4

megalinterskills/megalinter/SKILL.md

Entry point for everything MegaLinter. Use when the user wants to lint their repository, set up MegaLinter, check or fix lint errors, make CI lint jobs pass, or says "run megalinter", "fix lint errors", "make the linters happy", "clean up code quality". Detects the repository state and orchestrates the megalinter-setup, megalinter-check and megalinter-fix skills in a loop until the repository is clean.

megalinter-checkskills/megalinter-check/SKILL.md

Collect MegaLinter lint errors for the current repository. Use when the user wants to know if the code passes linting, why the MegaLinter CI job fails, or before/after fixing lint errors. Two modes - watch a CI job (GitHub Actions, GitLab CI, Azure Pipelines, Bitbucket Pipelines) and parse its logs, or run MegaLinter locally with Docker (full run or fast parallel standalone linter runs).

megalinter-fixskills/megalinter-fix/SKILL.md

Fix the errors reported by MegaLinter. Use after megalinter-check found errors, or when the user pastes MegaLinter/CI lint errors and wants them fixed. Applies safe fixes automatically (auto-fix linters first, then guided manual fixes using per-linter fix guides), asks the user when fixing is ambiguous, and can disable rules or linters with user confirmation. Never pushes to the default branch.

megalinter-setupskills/megalinter-setup/SKILL.md

Install or upgrade MegaLinter on a repository. Use when the user wants to add MegaLinter to a project, set up linting CI, update MegaLinter configuration or version, or says "install megalinter", "setup linting", "add code quality checks", "update megalinter skills". Always goes through npx mega-linter-runner (--install or --upgrade), then refines .mega-linter.yml. In upgrade mode it also refreshes the installed MegaLinter skills and sub-agents. Also sets up a MegaLinter custom flavor repository when the user explicitly asks for one.

Plugin manifests3

.codex-plugin/plugin.json
{
  "name": "megalinter",
  "version": "1.0.12",
  "description": "Set up, run and fix MegaLinter on any repository: 100+ linters for 69+ languages, 23+ formats and 21+ tooling formats, from CI or locally.",
  "author": {
    "name": "OX Security",
    "url": "https://megalinter.io"
  },
  "homepage": "https://megalinter.io",
  "repository": "https://github.com/oxsecurity/megalinter",
  "license": "AGPL-3.0",
  "keywords": [
    "linter",
    "code-quality",
    "formatter",
    "security",
    "ci"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "MegaLinter",
    "shortDescription": "Lint, fix and secure any repository with 100+ linters.",
    "longDescription": "MegaLinter aggregates 100+ linters covering 69+ languages, 23+ formats and 21+ tooling formats. This plugin installs it on your repository, collects errors from a CI job or a local Docker run, and fixes them using per-linter fix guides.",
    "developerName": "OX Security",
    "category": "Code Quality",
    "websiteURL": "https://megalinter.io",
    "defaultPrompt": "Set up MegaLinter on this repository and fix the errors it reports",
    "capabilities": [
      "Install MegaLinter on a repository",
      "Collect lint errors from a CI job or a local run",
      "Fix lint errors with per-linter fix guides"
    ]
  }
}
.claude-plugin/plugin.json
{
  "name": "megalinter",
  "displayName": "MegaLinter",
  "version": "1.0.12",
  "description": "Set up, run and fix MegaLinter on any repository: 100+ linters for 69+ languages, 23+ formats and 21+ tooling formats, from CI or locally.",
  "author": {
    "name": "OX Security",
    "url": "https://megalinter.io"
  },
  "homepage": "https://megalinter.io",
  "repository": "https://github.com/oxsecurity/megalinter",
  "license": "AGPL-3.0",
  "keywords": [
    "linter",
    "code-quality",
    "formatter",
    "security",
    "ci"
  ],
  "skills": "./skills/",
  "agents": [
    "./skills/megalinter-setup/agents/megalinter-watcher.md",
    "./skills/megalinter-setup/agents/megalinter-runner.md",
    "./skills/megalinter-setup/agents/megalinter-fixer.md"
  ]
}
plugin.json
{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "megalinter",
  "version": "1.0.12",
  "description": "Set up, run and fix MegaLinter on any repository: 100+ linters for 69+ languages, 23+ formats and 21+ tooling formats, from CI or locally.",
  "author": {
    "name": "OX Security",
    "url": "https://megalinter.io"
  },
  "homepage": "https://megalinter.io",
  "repository": "https://github.com/oxsecurity/megalinter",
  "license": "AGPL-3.0",
  "keywords": [
    "linter",
    "code-quality",
    "formatter",
    "security",
    "ci"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[megalinter on Agent Plugins Marketplace](https://pluginsmp.com/plugins/megalinter)