Stop building newsletter features from scratch.

Newsletter Tools

A utility MCP server with 10 tools for newsletter operators, developers, and content teams.

Quick Start

Add this to your claude_desktop_config.json or MCP client config:

{
  "mcpServers": {
    "newsletter-tools": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://YOUR_CLOUD_RUN_URL/mcp"]
    }
  }
}

Before / After

Input: subject_line_variants with subject "5 ways to grow your email list", issue_number 42

Output:

{
  "original": "5 ways to grow your email list",
  "curiosity": "This week: 5 ways to grow your email list",
  "question": "5 ways to grow your email list?",
  "urgency": "[Just published] 5 ways to grow your email list",
  "numbered": "Issue #42: 5 ways to grow your email list",
  "personal": "5 ways to grow your email list (a quick note)"
}

Tools

Tool	What it does
slugify_text	Convert any text to a URL-safe slug
estimate_read_time	Estimate reading time at 238 wpm
extract_plain_text	Strip HTML tags to return clean plain text
generate_preview_text	Extract a preheader snippet from content
word_count_stats	Return word, sentence, paragraph, and char counts
validate_email_address	Check email address format
format_newsletter_date	Format an ISO date into a readable header date
extract_links	Extract all URLs from HTML or plain text
truncate_text	Truncate to a word count with clean sentence boundary
subject_line_variants	Generate 6 subject line style variants

Who is this for?

• Newsletter operators automating workflows with Claude
• Developers building newsletter platforms and needing utility functions via MCP
• Content teams using AI assistants to prep, audit, and optimize issues before sending

Health Check

GET /health

{ "status": "ok", "server": "newsletter-tools", "version": "1.0.0", "tools": 10 }

Built with MCPize

Built by Mastermind HQ

License

MIT