Install Anti-Slop Oxlint Rules
dmmulroy/anti-slop
Installs, updates or migrates the vendored anti-slop Oxlint plugin in a repository, keeping local rule changes and the plugin's license and provenance files.
Fix the errors reported by MegaLinter. An agent skill from nvuillam/npm-groovy-lint.
Install Megalinter Fix
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fix --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/megalinter-fix .claude/skills/megalinter-fix && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .claude/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fixType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fix --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/megalinter-fix .agents/skills/megalinter-fix && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .agents/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fix --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/megalinter-fix .cursor/skills/megalinter-fix && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .cursor/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/nvuillam/npm-groovy-lint.git --path .claude/skills/megalinter-fix--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fix --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/megalinter-fix .gemini/skills/megalinter-fix && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .gemini/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fixInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/megalinter-fix .github/skills/megalinter-fix && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .github/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install nvuillam/npm-groovy-lint megalinter-fix --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nvuillam/npm-groovy-lint.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/megalinter-fix .opencode/skills/megalinter-fix && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "megalinter-fix" agent skill from https://github.com/nvuillam/npm-groovy-lint/tree/main/.claude/skills/megalinter-fix into .opencode/skills/megalinter-fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "megalinter-fix", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
megalinter-fix- GitHub stars
- 248
- Used in
- 1 other repo
- Token cost
- ~1.2k tokens
- SKILL.md length
- 554 words
- Files
- 126
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- MIT
At a glance
Fix the errors reported by MegaLinter. An agent skill from nvuillam/npm-groovy-lint.
- Works in 5 steps: Prepare → Load the fix guides — lazily → Fix → …
- Pastes MegaLinter/CI lint errors and wants them fixed
- SKILL.md covers 1. Prepare, 2. Load the fix guides — lazily, 3. Fix and 4. Disabling (always with user…, plus 2 more sections
- Calls npx and git; needs LINTER_KEY
What it does
Megalinter Fix is an agent skill from nvuillam/npm-groovy-lint. 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.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 126 other files (for example `linters/README.md`, `linters/action_actionlint.md` and `linters/action_zizmor.md`).
It sits in Development, covering Linting and formatting. The repository describes itself as: Lint, format and auto-fix your Groovy / Jenkinsfile / Gradle files using command line. The licence is MIT.
When your agent uses it
- Pastes MegaLinter/CI lint errors and wants them fixed
- Tasks that involve Linting and formatting
Example prompts
- “/megalinter-fix”
Requirements
- Node.js
- A credential in LINTER_KEY
- Pre-approved tools (allowed-tools): Bash, Read, Grep, Glob, Edit, Write, Agent, Skill, AskUserQuestion, WebSearch, WebFetch
Workflow steps
5 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 2080dff. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashReadGrepGlobEditWriteAgentSkillAskUserQuestionWebSearch
…and 1 more on the same allowed-tools line.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npxgit
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx and git, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
LINTER_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Megalinter Fix loads about 1.2k tokens when it runs. Until then it costs about 103 tokens; SKILL.md has 554 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read, Grep, Glob, Edit, Write, Agent, Skill, AskUserQuestion, WebSearch, WebFetch
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from nvuillam/npm-groovy-lint at commit 2080dff, republished under its MIT licence (© nvuillam). 554 words, ~1,223 tokens.
Download SKILL.mdSave it as
.claude/skills/megalinter-fix/SKILL.md (or your agent's skills folder). This skill also uses 125 other files; get the full folder from GitHub.- name
- megalinter-fix
- description
- 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.
- allowed-tools
- Bash, Read, Grep, Glob, Edit, Write, Agent, Skill, AskUserQuestion, WebSearch, WebFetch
- argument-hint
- [linter keys or pasted MegaLinter error list]
- user-invocable
- true
- licence
- MegaLinter by OX Security, Copyright 2026 - https://megalinter.io/
MegaLinter fix
Fix the MegaLinter errors you were given (output contract of megalinter-check: linter keys, error counts, files, sample error lines).
1. Prepare
- If the current branch is the default branch (
main/master), create a branch first:git checkout -b megalinter/fix-<topic>. - Group the errors by linter key. Handle blocking linters (❌) first; mention non-blocking ones (⚠️) to the user but don't fix them unless asked.
2. Load the fix guides — lazily
For each failing linter only, read its fix guide from this skill's directory: linters/<linter_key_lower>.md (e.g. linters/python_ruff.md). The index is in linters/README.md.
Each guide contains a generated block (auto-fix support, config/ignore files, rule documentation URLs, tuning variables, known non-lint failure patterns) and researched fix instructions. Never load guides for linters without errors.
3. Fix
In this order:
- Auto-fixable linters (guide says auto-fix supported): if a container engine is available, run
npx mega-linter-runner --linter <KEY> --fix [failing files...](add--container-engine podmanwhen using podman; usenpx mega-linter-runner@betawhen.mega-linter.ymlpinsMEGALINTER_VERSION: beta— see the version rule inmegalinter-check). Otherwise apply the underlying tool's documented fix behavior manually. If no engine is installed/running, ask the user first, then followcontainer-engine.mdin themegalinter-checkskill directory. - Manual fixes: fix remaining errors file by file following the guide's instructions. Consult the rule documentation URLs when unsure what a rule means.
- Errors not covered by the guide (unknown rule, missing/outdated guide): browse the web — fetch the rule's official documentation (start from the URLs in the guide's generated block) or search for the exact error message — before deciding on a fix. Never guess a fix or a suppression syntax.
- Ambiguous cases (fix would change behavior, several valid approaches, false positive suspected): ask the user, presenting the options — fix this way, inline-disable with justification, or ignore.
Show full SKILL.md (264 more words)Show less
4. Disabling (always with user confirmation)
When fixing is not relevant (false positives, rule conflicts with project style, linter not applicable):
- Narrowest first: inline-disable comment on the line → rule exclusion in the linter's config file →
<KEY>_FILTER_REGEX_EXCLUDE→<KEY>_DISABLE_ERRORS: true(non-blocking) →DISABLE_LINTERS(last resort). - The guide gives the exact syntax for each level. Never disable anything without explicit user confirmation.
- If a project-mode linter reports unexpected results tied to its exclusions or config resolution, check its console log for
[Excluded directories]lines: MegaLinter automatically forwards excluded directories through extra CLI arguments or generated ignore/config files. Disabling that forwarding for the linter (<LINTER_KEY>_FORWARD_EXCLUDED_DIRECTORIES: false) restores the tool's native behavior — useful when the repository's own ignore/config files are already complete.
5. Verify and finish
- Re-check with the
megalinter-checkskill (targeted re-check mode: only the fixed linters/files). Iterate at most 3 times in total. - Show the user a summary: fixed / disabled (with justification) / remaining.
- Commit on the working branch with a clear message. Ask before pushing; never push to the default branch.
Optimization: sub-agents (Claude Code and compatible agents)
If sub-agents are available and megalinter-fixer is installed (see megalinter-setup), fan out one megalinter-fixer per failing linter in parallel, giving each: the linter key, its error list, and the content of its fix guide. Each fixer returns its fixed count, modified files, and an unresolved list (possibly containing proposed_disable suppressions — fixers never apply disables themselves). Consolidate, ask the user about every unresolved item and proposed disable, apply the confirmed ones yourself, then run the targeted re-check (via megalinter-runner agents when available).
Without sub-agents, fix linters sequentially inline.
© nvuillam, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 125 other files in .claude/skills/megalinter-fix of nvuillam/npm-groovy-lint.
- SKILL.md
- linters/README.md
- linters/action_actionlint.md
- linters/action_zizmor.md
- linters/ansible_ansible_lint.md
- linters/arm_arm_ttk.md
- linters/bash_exec.md
- linters/bash_shellcheck.md
- linters/bash_shfmt.md
- linters/bicep_bicep_linter.md
- linters/c_clang_format.md
- linters/c_cppcheck.md
- linters/c_cpplint.md
- linters/clojure_clj_kondo.md
- linters/clojure_cljstyle.md
- linters/cloudformation_cfn_lint.md
- linters/coffee_coffeelint.md
- linters/copypaste_jscpd.md
- linters/cpp_clang_format.md
- linters/cpp_cppcheck.md
- … and 106 more
Open the folder on GitHubat commit 2080dff
Used in 2 other repositories
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in nvuillam/npm-groovy-lint, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Megalinter Fix next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Megalinter Fix this skillnvuillam/npm-groovy-lint | 248 | 1 repos | ~1.2k | Automated safety check: Notes | MIT | |
| Install Anti-Slop Oxlint Rulesdmmulroy/anti-slop | 5.3k | 1 repos | ~2.2k | Automated safety check: Pass | MIT | |
| Summarise Ecosystem Resultsastral-sh/ruff | 50k | 1 repos | ~2.2k | Automated safety check: Pass | MIT | |
| Minimizing Ty Ecosystem Changesastral-sh/ruff | 50k | — | ~4.6k | Automated safety check: Pass | MIT | |
| Babysit PR To Pass CIsgl-project/sglang | 37k | 2 repos | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Rust Best Practicesfarm-fe/farm | 5.6k | 3 repos | ~1.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Megalinter Fix
What does Megalinter Fix do?
Fix the errors reported by MegaLinter. An agent skill from nvuillam/npm-groovy-lint. Megalinter Fix is an agent skill from nvuillam/npm-groovy-lint. Fix the errors reported by MegaLinter.
When should I use Megalinter Fix?
Megalinter Fix fits situations like: pastes MegaLinter/CI lint errors and wants them fixed; tasks that involve Linting and formatting.
How do I install Megalinter Fix in Claude Code?
Run `npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a claude-code`. Or copy the skill folder (.claude/skills/megalinter-fix in nvuillam/npm-groovy-lint) into .claude/skills/megalinter-fix in your project. Claude Code loads it when a task matches its description.
How do I install Megalinter Fix in Codex?
Run `npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a codex`. Or copy the skill folder (.claude/skills/megalinter-fix in nvuillam/npm-groovy-lint) into .agents/skills/megalinter-fix in your project. Codex loads it when a task matches its description.
Can I use Megalinter Fix in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nvuillam/npm-groovy-lint --skill megalinter-fix -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/megalinter-fix, .gemini/skills/megalinter-fix, .github/skills/megalinter-fix and .opencode/skills/megalinter-fix in your project.
What does Megalinter Fix need to run?
Going by SKILL.md and its folder, Megalinter Fix needs the command-line tools its instructions call (npx and git) and credentials named LINTER_KEY. Our summary lists: Node.js; A credential in LINTER_KEY. Its frontmatter pre-approves these tools: Bash, Read, Grep, Glob, Edit, Write, Agent, Skill, AskUserQuestion, WebSearch, WebFetch.
Does Megalinter Fix access the network?
SKILL.md contains no URLs. Its commands use npx and git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Megalinter Fix safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Megalinter Fix use?
Megalinter Fix is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Megalinter Fix use?
About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Megalinter Fix?
Skills that share tags, products or a category with Megalinter Fix: Install Anti-Slop Oxlint Rules (dmmulroy/anti-slop, 5.3k stars), Summarise Ecosystem Results (astral-sh/ruff, 50k stars), Minimizing Ty Ecosystem Changes (astral-sh/ruff, 50k stars) and Babysit PR To Pass CI (sgl-project/sglang, 37k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Megalinter Fix?
nvuillam (a GitHub user) maintains it in nvuillam/npm-groovy-lint, which has 248 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 4, 2026.
Source: nvuillam/npm-groovy-lint on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.