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Webapp Testing

94TrustedShips scripts

Browser automation scripts to verify functionality and UI behavior for local web applications.

What it does

Installing this skill equips your assistant with pre-configured Python scripts that manage the lifecycle of local development servers. It allows the assistant to launch, navigate, and interact with browser-based applications directly, effectively acting as an automated user to validate site behavior.

By treating the provided scripts as black-box tools, the assistant avoids reading large source files into memory. This ensures your active context window stays focused on the specific testing logic rather than the infrastructure code required to manage browser instances.

When it earns its place

Reach for it when…

Apply this when you need to verify dynamic frontend interactions, such as checking if buttons function correctly, capturing screenshots of specific UI states, or parsing rendered DOM content after JavaScript execution completes.

Look elsewhere when…

Do not rely on this for scraping production websites, as the scripts are designed specifically for local development workflows. It is also overkill for verifying purely static HTML files that contain no JavaScript or complex, state-dependent UI components.

What to say to use it

You never invoke a skill directly — the assistant picks it up when your request matches what it covers. These are the kinds of things that do that.

  • check if the login button works on my local site
  • can you take a screenshot of the dashboard page
  • see what the console output says after I click submit
  • find all the form fields on my homepage

Install it

Install for all your projects

Copy the skill directory into your personal skills folder. Claude picks it up on its own the next time your request matches what it does — there is nothing to enable.

bash
git clone --depth 1 --branch main https://github.com/anthropics/skills.git /tmp/skills
mkdir -p ~/.claude/skills
cp -r /tmp/skills/skills/webapp-testing ~/.claude/skills/webapp-testing

Install for one project only

Put it in the project's own skills folder instead, so it can be committed and shared with everyone working on that repository.

bash
cp -r /tmp/skills/skills/webapp-testing .claude/skills/webapp-testing

If a skill of the same name exists in both places, the personal one wins.

Installing on Claude.ai or through the API instead? The full guide covers every surface.

Pair it with an MCP server

Webapp Testing changes how the work is done. These servers change what Claude can reach while doing it.

How skills and MCP servers differ →