modbender cdp-browser
CLI for Chrome/Chromium at localhost:9222. Inspect tabs, take screenshots, navigate, scroll, post to X, or run JS in a persistent browser session.
Repo: https://github.com/gostlightai/cdp-browser
Prerequisites: Chromium running with --remote-debugging-port=9222. Docker Compose or a local Chrome with remote debugging enabled.
Commands
Run from the skill dir (bin/ scripts):
| Command | Description |
|---|---|
status |
List all tabs (JSON from CDP) |
tabs |
Same as status |
new <url> |
Open new tab |
goto <tabId> <url> |
Navigate tab to URL |
snapshot <tabId> |
Full-page screenshot (PNG) |
close-popup <tabId> |
Dismiss dialogs/modals |
scroll <tabId> <px|sel> [down|up] |
Scroll by pixels or selector |
query <tabId> getUrl |
Return current page URL |
query <tabId> getText [selector] |
Return element text (or body) |
query <tabId> getHtml [selector] |
Return element HTML (or body) |
tweet-draft <tabId> "text" |
Fill compose box only; does NOT post |
tweet-post <tabId> --confirm "text" |
Post tweet (requires --confirm as second arg) |
tweet <tabId> "text" |
Alias for tweet-draft (fills compose only) |
Tweet flow
- tweet-draft (default): Fills the compose box; user reviews in browser and posts manually.
- tweet-post: Requires
--confirmas second arg (strict). Use when user explicitly approves ("go ahead", "post it", or Telegram confirm button). - Optional Telegram confirm: When
tweet.confirmButtonis enabled in config, the agent can runtweet-draft --save-pendingto write pending state, then send a message with an inline "Confirm Post" button. On confirm, the agent runstweet-post --confirm.
Config (required for Telegram confirm button)
The Telegram "Confirm Post" button only works if config exists. Copy the example and place it in your workspace:
# From the skill dir (e.g. ~/.openclaw/workspace/skills/cdp-browser):
cp .cdp-browser.json.example ~/.openclaw/workspace/.cdp-browser.json
Location: ~/.openclaw/workspace/.cdp-browser.json (or $OPENCLAW_WORKSPACE/.cdp-browser.json)
| Key | Default | Description |
|---|---|---|
tweet.confirmButton |
false |
When true, agent sends draft with inline "Confirm Post" button in Telegram. User clicks to approve or says "go ahead". |
Without this config, the agent uses plain tweet-draft (no button); user confirms via text only.
Telegram confirm button (agent instructions)
When tweet.confirmButton is true (config present) and you are in a Telegram session:
- Draft: Run
tweet-draft --save-pending <tabId> "text"from the skill dir. This fills the compose box and writes~/.openclaw/workspace/.cdp-browser/pending-tweet.json. - Send with button: Run from the skill dir:
Or use./scripts/send-tweet-confirm.sh <chat_id> "<tweet_text>"openclaw message senddirectly with--buttons '[[{"text":"Confirm Post","callback_data":"cdp:tweet:confirm"}]]'. Use the current session's reply target as<chat_id>. - On confirm: When the user clicks the button, OpenClaw delivers
callback_data: cdp:tweet:confirm. Or the user says "go ahead"/"post it". Treat either as approval. Then:- Read
~/.openclaw/workspace/.cdp-browser/pending-tweet.jsonfortextandtabId - Run
tweet-post <tabId> --confirm "<text>" - Edit or delete the message with the button (optional)
- Delete the pending file
- Read
Scripts
- cdp.js — Fetch-only wrapper for CDP HTTP API (
/json,/json/list,/json/new); no shell. - pw.js — Playwright connect to browser; runs snapshot/goto/scroll/query/tweet-draft/tweet-post. Compose launcher: SideNav_NewTweet_Button, /compose/post, Post only (avoids reply buttons). Post button: tweetButton, tweetButtonInline.
Security
See SECURITY.md for mitigations and operational notes.