Post Message
Send a message using chat.postMessage.
ClawdUp connector catalog
The ClawdUp Slack catalog lists four operations for channels and messages. It is a ClawdUp community entry, not an official Slack or Anthropic plugin.
The catalog manifest lists four tools and OAuth2 authentication. The generated package has not been verified end to end with a Slack workspace or Claude Desktop. Review its files and permissions before use.
Send a message using chat.postMessage.
Get channel information and list channels.
Add a reaction using reactions.add.
Confirm the generated files, required credentials, and requested permissions for your workspace. Catalog entries describe intended API operations; they do not prove a completed Claude Desktop setup.