textsanity-mcp

An MCP server that gives AI assistants the ability to clean up messy unicode, whitespace, zero-width characters, and smart punctuation before feeding text to a downstream model.

Works with Claude Desktop, Cursor, Cline, Windsurf, Zed, and any other MCP client.

Operations

• NFKC unicode normalization (fi → fi, full-width digits → ASCII).
• Strip zero-width code points (ZWSP, ZWJ, ZWNJ, BOM, RTL/LTR marks).
• Strip control chars (C0/C1) except \n and \t.
• Collapse whitespace runs to single spaces.
• Trim leading/trailing whitespace.
• ASCII punctuation: “”‘’–—… → ""''-/-....
• Strip emoji (optional).
• ASCII-only mode (optional, applied after smart-punctuation conversion).

Tools exposed

sanitize

Clean a string with the chosen pipeline.

{
  "text": "  Hello​   World  —  with  fi  and  smart “quotes” ",
  "ascii_punctuation": true
}

→

{ "clean": "Hello World - with fi and smart \"quotes\"" }

Configure your MCP client

Claude Desktop's claude_desktop_config.json:

{
  "mcpServers": {
    "textsanity": {
      "command": "npx",
      "args": ["-y", "@mukundakatta/textsanity-mcp"]
    }
  }
}

License

MIT.