openclaw-plugin-markdown-strip

OpenClaw plugin that strips Markdown formatting from outgoing messages on plaintext channels.

LLMs like Claude produce Markdown by default — **bold**, _italic_, ### headers, `code`, - lists. On channels like iMessage that don't render Markdown, this results in ugly raw syntax in your messages. This plugin hooks into message_sending and removes all Markdown formatting before delivery.

Install

openclaw plugins install openclaw-plugin-markdown-strip

Configuration

By default, the plugin strips Markdown on iMessage only. To add more channels:

// ~/.openclaw/openclaw.json
{
  "plugins": {
    "entries": {
      "markdown-strip": {
        "enabled": true,
        "config": {
          "channels": ["imessage", "signal", "whatsapp"]
        }
      }
    }
  }
}

Available channel IDs: imessage, signal, whatsapp, telegram, discord, slack, sms, irc, msteams, mattermost, etc.

What gets stripped

| Markdown | Result | |----------|--------| | **bold** | bold | | _italic_ | italic | | `code` | code | | ```codeblock``` | codeblock content | | ### Header | Header | | [text](url) | text | | ![alt](img) | alt | | > blockquote | blockquote | | - list item | list item | | ~~strikethrough~~ | strikethrough | | --- | (removed) | | \*escaped\* | escaped |

Ordered lists (1. item) are preserved as-is since they're readable in plaintext. Snake_case identifiers are not touched.

How it works

The plugin registers a message_sending hook that fires before each outgoing message. If the target channel is in the configured list, it runs the message through a series of regex replacements that strip Markdown syntax while preserving the readable text content.

Development

# Run tests
npm test

# Link for local development
openclaw plugins install -l .

License

MIT