x-video-post

name	x-video-post
description	Post a video with text to X (Twitter) using hybrid Playwright + macOS-use workflow. Use when user asks to post a video to X or Twitter.
allowed-tools	Bash, Read, Grep, mcp__playwright-extension__*, mcp__macos-use__*

X (Twitter) Video Post

Posts a video with accompanying text to X. Uses Playwright for navigation and text entry, then switches entirely to macOS-use for file upload and posting.

Critical difference from LinkedIn: You MUST close the Playwright browser connection before triggering the file upload, or the native dialog will not appear.

Prerequisites

• Chrome logged into X (Twitter)
• Video file exists at an absolute path on disk
• Post text prepared

Step-by-Step Workflow

Phase 1: Type Post Text (Playwright)

1. Navigate to X home:

   browser_navigate → https://x.com/home
   

2. Take a snapshot to find the composer
3. Click the "What is happening?!" text area to focus it
4. Type the post text into the composer

Phase 2: Close Playwright (Critical!)

5. Close Playwright browser connection:

   browser_close
   

   This is mandatory — Playwright's CDP fileChooserOpened listener will intercept the file dialog event and prevent the native macOS dialog from appearing. The typed text will persist in Chrome after closing Playwright.

Phase 3: Upload Video (macOS-use)

6. Get Chrome PID:

   pgrep -x "Google Chrome"
   

7. Use click_and_traverse on the media upload icon (image/video icon in composer toolbar)
   • Grep traversal for media-related buttons or icons
   • It's typically an image icon in the bottom toolbar of the composer
8. Wait for native file dialog (AXSheet) to appear
   • Grep traversal for AXSheet to confirm
9. Press Cmd+Shift+G via press_key_and_traverse to open "Go to folder"
10. Type the absolute video file path via type_and_traverse
11. Press Return via press_key_and_traverse
12. Grep traversal for "Open" button (AXButton near bottom of AXSheet, y > 1500)
13. Click "Open" via click_and_traverse

Phase 4: Wait for Upload & Post (macOS-use)

14. Wait for video upload to complete — X shows upload progress
    • Look for "Uploaded (100%)" or similar completion indicator
    • Large videos may take 30-60+ seconds
    • Periodically refresh_traversal and grep for upload status
15. Once upload complete, click "Post" button via click_and_traverse
    • Grep traversal for "Post" AXButton

Troubleshooting

• File dialog doesn't appear: Most likely Playwright is still connected. Ensure you called browser_close before clicking the media button with macOS-use.
• Text disappeared after browser_close: This shouldn't happen — Chrome keeps the page state. If it does, re-type via macOS-use type_and_traverse.
• Upload progress stuck: Large videos take time. Wait and check. If truly stuck, try re-selecting the file.
• "Post" button grayed out: Video may still be processing. Wait for upload completion indicator.
• Can't find media button: Traverse Chrome window and grep for image/photo/media related accessibility labels. The button is in the composer toolbar row.