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Add clipboard paste functionality and documentation for X Articles and regular posts
- Implemented `paste-from-clipboard.ts` script to send real paste keystrokes across macOS, Linux, and Windows. - Created detailed guides for publishing articles to X Articles and posting regular content, including usage examples and troubleshooting tips. - Added support for Markdown formatting and image handling in X Articles. - Documented manual workflows for image pasting and browser interactions using Playwright MCP.
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Jim Liu 宝玉
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# X Articles - Detailed Guide
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Publish Markdown articles to X Articles editor with rich text formatting and images.
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## Prerequisites
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- X Premium subscription (required for Articles)
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- Google Chrome installed
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- `bun` installed
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## Usage
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```bash
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# Publish markdown article (preview mode)
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npx -y bun ${SKILL_DIR}/scripts/x-article.ts article.md
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# With custom cover image
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npx -y bun ${SKILL_DIR}/scripts/x-article.ts article.md --cover ./cover.jpg
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# Actually publish
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npx -y bun ${SKILL_DIR}/scripts/x-article.ts article.md --submit
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```
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## Markdown Format
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```markdown
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---
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title: My Article Title
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cover_image: /path/to/cover.jpg
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---
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# Title (becomes article title)
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Regular paragraph text with **bold** and *italic*.
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## Section Header
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More content here.
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- List item 1
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- List item 2
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1. Numbered item
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2. Another item
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> Blockquote text
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[Link text](https://example.com)
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\`\`\`
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Code blocks become blockquotes (X doesn't support code)
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\`\`\`
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```
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## Frontmatter Fields
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| Field | Description |
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|-------|-------------|
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| `title` | Article title (or uses first H1) |
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| `cover_image` | Cover image path or URL |
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| `cover` | Alias for cover_image |
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| `image` | Alias for cover_image |
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## Image Handling
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1. **Cover Image**: First image or `cover_image` from frontmatter
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2. **Remote Images**: Automatically downloaded to temp directory
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3. **Placeholders**: Images in content use `[[IMAGE_PLACEHOLDER_N]]` format
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4. **Insertion**: Placeholders are found, selected, and replaced with actual images
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## Markdown to HTML Script
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Convert markdown and inspect structure:
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```bash
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# Get JSON with all metadata
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npx -y bun ${SKILL_DIR}/scripts/md-to-html.ts article.md
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# Output HTML only
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npx -y bun ${SKILL_DIR}/scripts/md-to-html.ts article.md --html-only
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# Save HTML to file
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npx -y bun ${SKILL_DIR}/scripts/md-to-html.ts article.md --save-html /tmp/article.html
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```
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JSON output:
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```json
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{
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"title": "Article Title",
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"coverImage": "/path/to/cover.jpg",
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"contentImages": [
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{
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"placeholder": "[[IMAGE_PLACEHOLDER_1]]",
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"localPath": "/tmp/x-article-images/img.png",
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"blockIndex": 5
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}
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],
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"html": "<p>Content...</p>",
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"totalBlocks": 20
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}
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```
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## Supported Formatting
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| Markdown | HTML Output |
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|----------|-------------|
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| `# H1` | Title only (not in body) |
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| `## H2` - `###### H6` | `<h2>` |
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| `**bold**` | `<strong>` |
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| `*italic*` | `<em>` |
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| `[text](url)` | `<a href>` |
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| `> quote` | `<blockquote>` |
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| `` `code` `` | `<code>` |
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| ```` ``` ```` | `<blockquote>` (X limitation) |
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| `- item` | `<ul><li>` |
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| `1. item` | `<ol><li>` |
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| `` | Image placeholder |
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## Workflow
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1. **Parse Markdown**: Extract title, cover, content images, generate HTML
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2. **Launch Chrome**: Real browser with CDP, persistent login
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3. **Navigate**: Open `x.com/compose/articles`
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4. **Create Article**: Click create button if on list page
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5. **Upload Cover**: Use file input for cover image
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6. **Fill Title**: Type title into title field
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7. **Paste Content**: Copy HTML to clipboard, paste into editor
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8. **Insert Images**: For each placeholder (reverse order):
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- Find placeholder text in editor
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- Select the placeholder
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- Copy image to clipboard
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- Paste to replace selection
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9. **Review**: Browser stays open for 60s preview
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10. **Publish**: Only with `--submit` flag
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## Example Session
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```
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User: /post-to-x article ./blog/my-post.md --cover ./thumbnail.png
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Claude:
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1. Parses markdown: title="My Post", 3 content images
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2. Launches Chrome with CDP
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3. Navigates to x.com/compose/articles
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4. Clicks create button
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5. Uploads thumbnail.png as cover
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6. Fills title "My Post"
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7. Pastes HTML content
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8. Inserts 3 images at placeholder positions
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9. Reports: "Article composed. Review and use --submit to publish."
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```
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## Troubleshooting
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- **No create button**: Ensure X Premium subscription is active
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- **Cover upload fails**: Check file path and format (PNG, JPEG)
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- **Images not inserting**: Verify placeholders exist in pasted content
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- **Content not pasting**: Check HTML clipboard: `npx -y bun ${SKILL_DIR}/scripts/copy-to-clipboard.ts html --file /tmp/test.html`
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## How It Works
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1. `md-to-html.ts` converts Markdown to HTML:
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- Extracts frontmatter (title, cover)
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- Converts markdown to HTML
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- Replaces images with unique placeholders
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- Downloads remote images locally
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- Returns structured JSON
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2. `x-article.ts` publishes via CDP:
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- Launches real Chrome (bypasses detection)
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- Uses persistent profile (saved login)
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- Navigates and fills editor via DOM manipulation
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- Pastes HTML from system clipboard
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- Finds/selects/replaces each image placeholder
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# Regular Posts - Detailed Guide
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Detailed documentation for posting text and images to X.
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## Manual Workflow
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If you prefer step-by-step control:
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### Step 1: Copy Image to Clipboard
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```bash
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npx -y bun ${SKILL_DIR}/scripts/copy-to-clipboard.ts image /path/to/image.png
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```
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### Step 2: Paste from Clipboard
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```bash
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# Simple paste to frontmost app
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npx -y bun ${SKILL_DIR}/scripts/paste-from-clipboard.ts
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# Paste to Chrome with retries
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npx -y bun ${SKILL_DIR}/scripts/paste-from-clipboard.ts --app "Google Chrome" --retries 5
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# Quick paste with shorter delay
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npx -y bun ${SKILL_DIR}/scripts/paste-from-clipboard.ts --delay 200
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```
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### Step 3: Use Playwright MCP (if Chrome session available)
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```bash
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# Navigate
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mcp__playwright__browser_navigate url="https://x.com/compose/post"
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# Get element refs
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mcp__playwright__browser_snapshot
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# Type text
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mcp__playwright__browser_click element="editor" ref="<ref>"
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mcp__playwright__browser_type element="editor" ref="<ref>" text="Your content"
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# Paste image (after copying to clipboard)
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mcp__playwright__browser_press_key key="Meta+v" # macOS
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# or
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mcp__playwright__browser_press_key key="Control+v" # Windows/Linux
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# Screenshot to verify
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mcp__playwright__browser_take_screenshot filename="preview.png"
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```
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## Image Support
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- Formats: PNG, JPEG, GIF, WebP
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- Max 4 images per post
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- Images copied to system clipboard, then pasted via keyboard shortcut
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## Example Session
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```
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User: /post-to-x "Hello from Claude!" --image ./screenshot.png
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Claude:
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1. Runs: npx -y bun ${SKILL_DIR}/scripts/x-browser.ts "Hello from Claude!" --image ./screenshot.png
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2. Chrome opens with X compose page
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3. Text is typed into editor
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4. Image is copied to clipboard and pasted
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5. Browser stays open 30s for preview
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6. Reports: "Post composed. Use --submit to post."
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```
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## Troubleshooting
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- **Chrome not found**: Set `X_BROWSER_CHROME_PATH` environment variable
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- **Not logged in**: First run opens Chrome - log in manually, cookies are saved
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- **Image paste fails**:
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- Verify clipboard script: `npx -y bun ${SKILL_DIR}/scripts/copy-to-clipboard.ts image <path>`
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- On macOS, grant "Accessibility" permission to Terminal/iTerm in System Settings > Privacy & Security > Accessibility
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- Keep Chrome window visible and in front during paste operations
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- **osascript permission denied**: Grant Terminal accessibility permissions in System Preferences
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- **Rate limited**: Wait a few minutes before retrying
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## How It Works
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The `x-browser.ts` script uses Chrome DevTools Protocol (CDP) to:
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1. Launch real Chrome (not Playwright) with `--disable-blink-features=AutomationControlled`
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2. Use persistent profile directory for saved login sessions
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3. Interact with X via CDP commands (Runtime.evaluate, Input.dispatchKeyEvent)
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4. **Paste images using osascript** (macOS): Sends real Cmd+V keystroke to Chrome, bypassing CDP's synthetic events that X can detect
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This approach bypasses X's anti-automation detection that blocks Playwright/Puppeteer.
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### Image Paste Mechanism (macOS)
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CDP's `Input.dispatchKeyEvent` sends "synthetic" keyboard events that websites can detect. X ignores synthetic paste events for security. The solution:
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1. Copy image to system clipboard via Swift/AppKit (`copy-to-clipboard.ts`)
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2. Bring Chrome to front via `osascript`
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3. Send real Cmd+V keystroke via `osascript` and System Events
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4. Wait for upload to complete
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This requires Terminal to have "Accessibility" permission in System Settings.
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