A setup and run tool for MegaLinter, which checks source code and configuration with many language and format linters. It can be used locally or from continuous integration, the automated checks that run during code changes.

Use it to add MegaLinter to a repository, run its checks, and fix reported issues across supported languages and file formats.

It gives a repository one way to run and fix many style and correctness checks instead of configuring each linter separately.

megalinter — Plugin for Gemini CLI by oxsecurity

About the project

MegaLinter is a repository analysis tool that runs linters and related checks across source code, infrastructure-as-code, configuration, scripts, formats, spelling, copy-pastes, and security issues. It is for teams that want automated quality checks in GitHub Actions, other CI systems, or local development. The catalogue add-ons help coding agents use and configure MegaLinter and respond to its findings.

oxsecurity/megalinter · 2,630 stars · on GitHub · megalinter.io

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/oxsecurity/megalinter

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/oxsecurity/megalinter/gemini-extension/github.svg)](https://agentmods.dev/plugins/oxsecurity/megalinter/gemini-extension)

Your own site

<a href="https://agentmods.dev/plugins/oxsecurity/megalinter/gemini-extension"><img src="https://agentmods.dev/badge/plugins/oxsecurity/megalinter/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/oxsecurity/megalinter/gemini-extension"><img src="https://agentmods.dev/badge/plugins/oxsecurity/megalinter/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Security

Grade A, and why

megalinter scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gemini-extension.json · 6 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

51 files beside gemini-extension.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday Changed b8bef0da7d7e
8d ago Changed 18177095f38d
9d ago Changed 24e01279edcd
10d ago Changed 323776f7455f
16d ago Changed 6970ac0b16fb
17d ago Changed 22c0923b5ac9
18d ago Changed 5de186e76b48
1mo ago Changed 359641db5712
1mo ago Changed 97fc87598f08
1mo ago First seen · 6 lines scan A ffb60194d08b

Subscribe to this mod's changes

megalinter is a plugin published in the GitHub repository oxsecurity/megalinter (2,630 stars, last pushed today), licensed AGPL-3.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.

CI and CD DevOps and cloud Java Python code-quality jenkins linter terraform

megalinter

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

The source is not reproduced here

Licensed AGPL-3.0

What ships with it

What this file has done since we first saw it

Other plugins, from other repositories

docvet marketplace

docvet-lsp

specflow-improve

persona-harness

sdlc

claudeconf