December Product Update

We’ve rolled out exciting new updates to the Stack AI platform.

These include Custom MCP Connections, Simplified LLM Nodes, Improved Slack & Gmail Integrations, GPT-5.2 and more!

What’s New:

Custom MCP connections

We've added OAuth support for secure authentication and the ability to connect multiple MCP servers simultaneously.

You can also now pass raw MCP configurations directly to LLM nodes without requiring a pre-configured connection.

UI/UX

Simplified LLM Nodes

We've streamlined the workflow builder experience by removing instructions and prompts from the main node view, making it easier to visualize and build your workflows

Inline Run Workflow

Execute workflows directly inline without leaving the builder

New integrations & actions

• New AWS RDS integration: connect to your RDS databases with new query and insert actions.

• New ElevenLabs integration: generate audio from text with our new text-to-speech action.

• Slack

  • On App Mentions now return thread IDs, enabling memory across conversation threads

  • Use thread IDs in send & wait actions for threaded responses

  • Improved citation formatting in messages

• Gmail

  • Add and remove labels from emails

  • Trigger filtering by fields like sender domain, message id, received at

  • Reply to email action

• Hyperbrowser: Create and manage profiles

• Sharepoint: Get file action

New models

• OpenAI: GPT-5.2

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Stay tuned for more exciting updates from us in the next two weeks!