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Controls script installation, update checking, and execution timing through parsed metadata tags like @match, @version, and @run-at.
Distinct from Lifecycle Script Execution: Distinct from Lifecycle Script Execution: this focuses on metadata-driven lifecycle management for userscripts specifically, not general system lifecycle events.
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Userscripts is a Safari browser extension that installs and runs custom JavaScript and CSS on websites through Apple's content script injection system. It provides a privileged execution context that allows userscripts to perform cross-origin HTTP requests and access clipboard functionality beyond standard browser sandbox restrictions. The extension uses metadata tags like @match, @run-at, and @weight to control precisely when and where scripts execute on web pages. It includes a built-in code editor with syntax highlighting and linting for modifying scripts directly, and supports automatic s
Controls script installation, update checking, and execution timing through parsed metadata tags like @match, @version, and @run-at.