x-to-kindle（x 点燃）

X to Kindle

Convert X/Twitter posts into Kindle-readable documents via email.

Requirements

• Gmail account with App Password (or other SMTP setup)
• Kindle email address (found in Amazon account settings)

Workflow

When user shares an X link:

1. Extract content via fxtwitter API:

   https://api.fxtwitter.com/status/<tweet_id>

Extract from URL: twitter.com/*/status/<id> or x.com/*/status/<id>

1. Format as HTML file (save to /tmp):

   <!DOCTYPE html>
   <html>
   <head><meta charset="UTF-8"><title>{title}</title></head>
   <body style="font-family: Georgia, serif; max-width: 600px; margin: 0 auto; padding: 20px; line-height: 1.6;">
     <h1>@{author_handle}</h1>
     <p>{tweet_text}</p>
     <p><em>{timestamp}</em></p>
     <p><a href="{original_url}">View on X</a></p>
   </body>
   </html>

1. Send via SMTP with HTML as ATTACHMENT (Kindle requires attachment, not inline HTML):

   from email.mime.multipart import MIMEMultipart
   from email.mime.text import MIMEText
   from email.mime.base import MIMEBase
   from email import encoders
   
   msg = MIMEMultipart()
   msg['Subject'] = "Tweet from @handle"
   msg['From'] = from_email
   msg['To'] = kindle_email
   
   # Plain text body (not the content)
   msg.attach(MIMEText("Article attached.", 'plain'))
   
   # HTML file as attachment - THIS IS REQUIRED
   with open("/tmp/article.html", "rb") as f:
       attachment = MIMEBase('text', 'html')
       attachment.set_payload(f.read())
       encoders.encode_base64(attachment)
       attachment.add_header('Content-Disposition', 'attachment', filename='article.html')
       msg.attach(attachment)

Tools

• send_to_kindle: Send a local file to the configured Kindle email.

Configuration

Set the following environment variables in your Clawdbot configuration (or .env file):

• SMTP_EMAIL: Your sender email (e.g., gmail)
• SMTP_PASSWORD: Your app password
• KINDLE_EMAIL: Your Kindle email address
• SMTP_SERVER: (Optional) Default: smtp.gmail.com
• SMTP_PORT: (Optional) Default: 587

Tool Definitions

send_to_kindle

Send a local file (PDF, HTML, TXT) to the Kindle.

• Run: python3 skills/x-to-kindle/send_to_kindle.py <file_path>

Configuration

Store in TOOLS.md:

## Kindle
- Address: user@kindle.com

## Email (Gmail SMTP)
- From: your@gmail.com
- App Password: xxxx xxxx xxxx xxxx
- Host: smtp.gmail.com
- Port: 587

Example

User sends: https://x.com/elonmusk/status/1234567890

1. Fetch https://api.fxtwitter.com/status/1234567890
2. Extract author, text, timestamp
3. Send HTML email to Kindle address
4. Confirm: "Sent to Kindle 📚"