Social media scheduling with MCP (Slack + Postiz)

If you’re like most communicative teams, your Slack channels are full of great insights, customer feedback, and interesting discussions that never make it beyond your workspace.

This guide demonstrates how to use the Slack and Postiz MCP servers with Claude Desktop to automatically transform those valuable conversations into social media content.

Prerequisites

Before you get started, make sure you have:

• Claude Desktop  installed
• Both MCP servers set up:
  • Slack MCP setup guide
  • Postiz MCP setup guide

Installing the MCP servers

After following both setup guides, your claude_desktop_config.json should include the Slack MCP server:

You should also see your Postiz connector listed in Claude Desktop, under Settings → Connectors.

With Slack and Postiz configured in Claude, you can test the integration.

Testing the integration

Here’s a practical scenario: Let’s say your team uses 🚀 emoji reactions to mark Slack threads that contain insights worth sharing externally. You can ask Claude to find these conversations and turn them into social media posts:

Here is the prompt:

When you run this prompt, Claude searches your Slack workspace, analyzes the marked conversations, and creates optimized posts for your social platforms.

Claude schedules the posts using Postiz, so you can review them at platform.postiz.com .

Conclusion

Clause can now automatically turn your best Slack threads into social media posts by finding threads marked with 🚀 reactions.

Customize this workflow to suit your team’s needs and skills. For example, telling Claude to focus on messages from specific channels or users may help it create content that resonates with your audience.