cmux-browser

Browser automation for cmux webviews with snapshot-based element targeting and state verification. Use this skill for browser tasks inside cmux webviews. Notes: cmux supports wait patterns similar to agent-browser: If get url is empty or about:blank , navigate first instead of waiting on load state. These commands currently return not_supported because they rely on Chrome/CDP-only APIs not exposed by WKWebView: Use supported high-level commands ( click , fill , press , scroll , wait , snapshot ) instead. Some complex pages can reject or break the JavaScript used for rich snapshots and ad-hoc evaluation. Recovery steps: - Open surfaces, navigate, and verify URLs before acting; snapshot with --interactive to get fresh element references for clicks, fills, and selections - Wait patterns support selectors, text content, URL changes, load states, and custom JavaScript functions with configurable timeouts - Recommended workflow: navigate → verify URL → wait for load state → snapshot → act → snapshot again to handle DOM changes - Built on WKWebView; high-level commands (click, fill, press, scroll, wait) are supported; Chrome-specific features like viewport emulation and network mocking are not available - Open or target a browser surface. - Verify navigation with get url before waiting or snapshotting. - Snapshot ( --interactive ) to get fresh element refs.