Guide · Agent skill
How to use the Console Cleanup agent skill (console-cleanup)
Updated · written with AI from the project's own documentation and checked against our catalogue data
The console-cleanup skill is a set of instructions that teaches an AI coding agent to look for console statements in JavaScript that would be visible in a live product. It is useful for front-end developers preparing a web app for release and for teams doing a pre-deployment review. After reading this guide you will know what the skill does, how to install it, how to ask for it in plain language, and where its limits are.
Console Cleanupthedaviddias/Front-End-Checklist · MIT Download the skill Quick start
- 1Download the ZIP. Download the console-cleanup ZIP from this page. It contains SKILL.md and references/rule.md.
- 2Choose where to install. Unzip into ~/.claude/skills/ for personal use, or into .claude/skills/ inside a project for that project only.
- 3Or upload it in the Claude apps. In the Claude apps, open Settings, go to Capabilities, and upload the skill under Skills.
- 4Ask for a review in plain language. Describe the files or components to check, such as asking the agent to review console statements before release.
- 5Apply and verify. Apply the suggested changes you agree with, then reload the page in the browser and confirm the debug output no longer appears.
What the console-cleanup skill makes the agent do
When the skill is installed, the agent reviews JavaScript code for console.log, console.debug, console.table and similar debugging output. The skill's guidance is that these statements can leak sensitive information, affect performance, and create an unprofessional experience when visible in production.
For each finding, the agent suggests one of several options: removing the statement, wrapping it in an environment-aware check, replacing it with a proper logging service, or configuring build tools to strip console statements automatically. The skill also says console.error may be kept for critical error tracking, and console.warn may be kept for developer warnings.
- Flags console.log, console.debug, console.info, console.table, console.time, console.trace, console.group and similar methods
- Suggests removal, environment checks, a logging service, or build-tool stripping
- Reviews client-side scripts and browser behaviour for related issues
- Describes how to verify a fix in the browser
How to install the console-cleanup skill
Download the console-cleanup ZIP from the download link on this page. The skill is made of two files, SKILL.md and references/rule.md, so the ZIP should contain the skill folder with those files inside.
You can install it for yourself or for one project. For yourself, unzip it into ~/.claude/skills/. For a single project, unzip it into the .claude/skills/ folder inside that project. If you use the Claude apps instead, open Settings, go to Capabilities, and upload the skill under Skills.
- Personal install: unzip into ~/.claude/skills/
- Project install: unzip into .claude/skills/ inside your project
- Claude apps: Settings → Capabilities → Skills, then upload
How to trigger the skill with natural requests
You do not need a special command. The skill's description tells the agent when to use it: when reviewing scripts, client components, bundles, or runtime behaviour related to removing console statements in production. Ask for that work in ordinary language and the agent should pick up the skill.
Name the scope you care about. A request that points at a file, folder or component gives the agent a clear target, and asking it to check the browser behaviour as well asks it to follow the verification step in the skill.
- Review the console statements in src/ before we release this
- Check the client components in this checkout flow for debug output that would show in production
- Find console.log calls that could leak user data in the bundle code I just changed
- Check whether our login scripts leave debug output visible in the browser
Examples of what the agent returns
A typical review lists each console call it found, explains why it matters in production, and proposes a fix. For a call that logs user data, the likely suggestion is to remove it. For a useful error log, the agent may suggest keeping console.error or sending the error to a logging service instead.
Because the skill covers browser execution paths too, the review can also point out runtime side effects or blocking operations in client scripts. It should state how to confirm the fix in the browser, for example by reloading the page and checking that the output no longer appears.
- Each finding with file context and a reason
- A suggested fix: remove, guard with an environment check, log via a service, or strip at build time
- Browser verification steps for the change
console.log('User data:', userData)
console.debug('API response:', response)
console.table(results)What the skill needs and its safety notes
The skill lists no requirements. It does not run scripts and does not use the network, according to its listing. It works from the code and browser behaviour you give it, and it suggests changes rather than being described as running them automatically.
Read the suggestions before applying them, especially when the change would remove logging you rely on for incident debugging. The skill itself is specific to console statements in JavaScript, so it gives no guidance for other languages.
- No listed requirements
- Does not run scripts
- Does not use the network
- Check suggested removals before applying them
Tips and limits
Run the skill on a branch or a staging build first, so you can compare the output before and after. Keep console.error where your team depends on it for error tracking, as the skill itself suggests.
Do not use this skill where console output is intentionally part of the product, or where you need it to diagnose a live incident. Removing diagnostics in those cases could hide the information you need.
- Review changes in a branch before merging
- Keep console.error if your team uses it for error tracking
- Skip projects where console output is part of the product
- Skip non-JavaScript codebases
What people use it for
- Clean up debug logging in a web app before a production release
- Review a checkout or login flow for console output that could expose user data
- Check a changed component or bundle for leftover console.table or console.time calls
- Plan how to replace debug logs with a logging service or environment-aware checks
Frequently asked questions
Is the console-cleanup skill free?
The skill is published under the MIT licence, as stated on this page. Check the licence file in the source repository for the full terms.
What do I need to use the console-cleanup skill?
The skill lists no requirements. It needs an agent that supports skills, and it is specific to JavaScript code. It does not run scripts and does not use the network.
Where do I put the console-cleanup skill files?
Unzip the ZIP into ~/.claude/skills/ for personal use, or into .claude/skills/ inside a project. In the Claude apps, you can upload it under Settings, then Capabilities, then Skills.
Will the skill remove console.log statements automatically?
The skill describes suggesting removal, wrapping statements in environment checks, using a logging service, or configuring build tools to strip them. Review each suggestion before applying it.
Should I remove console.error as well?
Not necessarily. The skill says console.error may be kept for critical error tracking, and console.warn may be kept for developer warnings.
Can I use this skill for non-JavaScript projects?
No. The skill's guidance is specific to console statements in JavaScript, so it is not suitable for non-JavaScript codebases.
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Our verdict
Use console-cleanup if you are a front-end developer or a team preparing a JavaScript web app for release and want a consistent check for debug output. Skip it if your console output is part of the product or needed for live incident debugging, or if your codebase is not JavaScript.
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