x-posting

name	x-posting
description	Compose and post tweets to X with character validation. Use when asked to post or tweet something.
disable-model-invocation	true
allowed-tools	["mcp__claude-in-chrome__*"]

X Posting Skill

Compose and post tweets to X (Twitter).

Prerequisites

• Claude-in-Chrome extension must be connected
• Browser must be logged into X.com
• User must confirm the tweet content before posting

Character Limits

• Standard tweet: 280 characters
• Twitter Blue: 25,000 characters
• Always validate length before posting

Posting Workflow

1. Validate Tweet Content

const tweet = "Your tweet content here";
if (tweet.length > 280) {
  // Either truncate or split into thread
  console.log("Tweet exceeds 280 characters");
}

2. Navigate to X

Use mcp__claude-in-chrome__navigate to go to https://x.com
Wait for page to fully load

3. Open Compose Modal

Use mcp__claude-in-chrome__find to locate "Post" or compose button
Click the compose button
Wait for modal to appear

4. Enter Tweet Text

Use mcp__claude-in-chrome__find to locate the tweet input area
Use mcp__claude-in-chrome__form_input to enter the tweet text

5. Add Media (Optional)

If including images or video:

Use mcp__claude-in-chrome__find to locate media upload button
Use mcp__claude-in-chrome__upload_image to add media
Wait for upload to complete

6. Post the Tweet

Use mcp__claude-in-chrome__find to locate "Post" button
Click to post
Wait for confirmation

7. Verify Success

Check for success notification or the tweet appearing in timeline
Return the tweet URL if available

Threading

For content longer than 280 characters:

1. Split into logical chunks under 280 chars each
2. Number them: (1/3), (2/3), (3/3)
3. Post first tweet
4. Reply to first tweet with second part
5. Continue replying to create thread

Safety Notes

• Always confirm tweet content with user before posting
• Double-check @mentions to avoid tagging wrong accounts
• Be cautious with sensitive or controversial content
• Consider timing for optimal engagement