The Agent Skills Directory

[COMMAND_EXECUTION]: The skill executes local developer tools such as npm, npx, and node to build and test the project. These are standard development operations restricted to the local project environment.
[EXTERNAL_DOWNLOADS]: The skill requires playwright to be installed. It provides instructions to download the Playwright browser binaries via npx playwright install chromium. This targets a well-known service (Microsoft/Playwright) for its primary functionality.
[INDIRECT_PROMPT_INJECTION]: The skill ingests scenario files (.mjs) and evaluates expressions within a headless browser context. However, this is used for testing the developer's own code, and the tool is intended for manual execution by the developer rather than processing untrusted third-party data.
[DYNAMIC_EXECUTION]: The harness uses page.evaluate() to run JavaScript inside the browser context to probe the game state. This is a standard and necessary method for headless browser testing and does not incorporate untrusted external input.

phaser-playtest