{"id":51298062,"url":"https://github.com/shivam2014/chrome-cdp-cli","last_synced_at":"2026-06-30T16:32:15.542Z","repository":{"id":361719118,"uuid":"1255531715","full_name":"shivam2014/chrome-cdp-cli","owner":"shivam2014","description":"Project-agnostic Chrome DevTools CLI for extension development. 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Connects to Chrome via CDP (Chrome DevTools Protocol) on port 9222.\n\n## Install\n\n```bash\ncd ~/tools/chrome-cdp\nnpm install\nnpm link          # makes `cdc` available globally\n```\n\nChrome must be running with `--remote-debugging-port=9222`.\n\n## Commands\n\n```\ncdc list                              List all open tabs/pages\ncdc status                            Health check + circuit state\ncdc reload-ext \u003cname\u003e                 Reload extension by name\ncdc refresh-page \u003curl-pattern\u003e        Refresh first page matching pattern\ncdc reload-ext+page \u003cext\u003e \u003cpattern\u003e   Reload ext then refresh page\ncdc eval \u003curl-pattern\u003e \u003cjs-expr\u003e      Evaluate JS in matching page\ncdc screenshot \u003curl-pattern\u003e [path]   Screenshot matching page\ncdc nav \u003curl-pattern\u003e \u003curl\u003e           Navigate matching page\ncdc dev-mode [on|off|status]          Toggle/query Chrome extension developer mode\ncdc ext-errors \u003cname\u003e [--clear]       Read/clear extension errors\ncdc layout \u003curl-pattern\u003e [mode]       Page layout: actionable (default) or tree\n\nInteraction (index or CSS selector):\ncdc fill \u003cpattern\u003e \u003ctarget\u003e \u003cvalue\u003e   Auto-detect + fill field\ncdc fill-many \u003cpattern\u003e \u003cjson\u003e        Fill multiple fields (one connection)\ncdc clear \u003cpattern\u003e \u003ctarget\u003e          Clear a field\ncdc click \u003cpattern\u003e \u003ctarget\u003e          Click element (real mouse events)\ncdc check \u003cpattern\u003e \u003ctarget\u003e [on]     Toggle checkbox\ncdc verify \u003cpattern\u003e \u003ctarget\u003e [val]   Check field value\ncdc type \u003cpattern\u003e \u003ctarget\u003e \u003ctext\u003e    Keyboard simulation\ncdc options \u003cpattern\u003e \u003ctarget\u003e        List dropdown/combobox options\ncdc hover \u003cpattern\u003e \u003ctarget\u003e          Hover over an element\n\nFlags:\n  --wait \u003cms\u003e   Wait for element to appear (fill, click)\n\nAll results include `duration` (ms) for performance tracking.\n```\n\n## Examples\n\n```bash\n# Check Chrome is alive\ncdc status\n\n# List open tabs\ncdc list\n\n# Reload extension + refresh target page\ncdc reload-ext+page \"Job Copilot\" oraclecloud\n\n# Evaluate JS in a page matching URL\ncdc eval oraclecloud \"document.title\"\n\n# Screenshot a page\ncdc screenshot oraclecloud /tmp/shot.png\n\n# Extract page layout as structured text (no vision model needed)\ncdc layout oraclecloud\n\n# Fill a field (by index from layout)\ncdc fill oraclecloud 5 \"Bhalla\"\n\n# Fill by CSS selector\ncdc fill oraclecloud \"#lastName\" \"Bhalla\"\n\n# Fill multiple fields at once (one connection, 4x faster)\ncdc fill-many oraclecloud '{\"5\":\"Bhalla\",\"7\":\"Shivam\",\"15\":\"Kumar\"}'\n\n# Fill from JSON file\ncdc fill-many oraclecloud fields.json\n\n# Click an element\ncdc click oraclecloud 8\n\n# Clear a field\ncdc clear oraclecloud 5\n\n# Check field value\ncdc verify oraclecloud 5 \"Bhalla\"\n\n# Check extension errors\ncdc ext-errors \"Job Copilot\"\n\n# Enable developer mode\ncdc dev-mode on\n```\n\n## Environment\n\n| Variable | Default | Description |\n|---|---|---|\n| `CDC_PORT` | `9222` | Chrome CDP port |\n\n## Architecture\n\n```\nlib/connect.mjs     Playwright connectOverCDP + findPage\nlib/circuit.mjs     Circuit breaker (CLOSED/OPEN/HALF_OPEN)\nbin/cdc.mjs         CLI entry, routes to commands\ncommands/*.mjs      One file per command\n```\n\nCircuit breaker persists state in `/tmp/cdc-circuit.json`. Two consecutive CDP failures → OPEN (fail fast for 15s) → HALF_OPEN (one test request) → CLOSED (normal).\n\n## Layout Modes\n\nTwo modes for different use cases:\n\n**`cdc layout \u003cpattern\u003e`** or **`cdc layout \u003cpattern\u003e actionable`** (default) — Numbered interactive elements as markdown table. AI agents reference elements by number (\"click element 8\"). Fast, compact, directly actionable.\n\n**`cdc layout \u003cpattern\u003e tree`** — Full AX tree with roles, names, hierarchy. For debugging/development. Optional depth: `cdc layout \u003cpattern\u003e tree 6`.\n\nInspired by [CEF-based browser project](https://old.reddit.com/r/AI_Agents/comments/1r8mr39/) that found text models navigate 3x faster than vision models when fed structured element tables.\n\n## How it works\n\n**reload-ext**: Opens `chrome://extensions` in a temp tab, drills three levels of shadow DOM (`extensions-manager` → `extensions-item-list` → `extensions-item`), finds extension by name, clicks `#dev-reload-button`. Works for any Chrome extension.\n\n**layout**: Uses CDP `Accessibility.getFullAXTree` to extract the page's accessibility tree as structured text. Shows element roles, names, values, and positions. No vision model needed — faster and more accurate than screenshots for understanding page structure.\n\n**ext-errors**: Reads the error badge and error text from `chrome://extensions` shadow DOM. Errors appear when content scripts throw uncaught exceptions.\n\n## Design principles\n\n- No project-specific code. All commands take parameters.\n- Every command closes the CDP connection on exit (no hanging).\n- Circuit breaker prevents silent hangs when Chrome is down.\n- URL pattern matching: substring match against `page.url()`.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fshivam2014%2Fchrome-cdp-cli","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fshivam2014%2Fchrome-cdp-cli","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fshivam2014%2Fchrome-cdp-cli/lists"}