Automation library · Content

Create a Slack AI chatbot with OpenRouter and Postgres

Started by an event in a connected app, and works across Slack. It puts OpenRouter behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 8 steps, 1 branch: small enough to read in one sitting and change without fear.

SmallCalls a model: OpenRouterRetrieval

8 stepsSmall: readable in one sitting
1Branch: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 3Logic 2Service 2

The steps in the order they run, from what starts it.

  1. 1OpenRouter Chat ModelLm Chat Open RouterModel
  2. 2On Message ReceivedSlack triggerStarts it
  3. 3Postgres Chat MemoryMemory Postgres ChatModel
  4. 4AI AgentAgentModel
  5. 5Check If UserIfLogic
  6. 6Send ReplySlackService
  7. 7Set Thinking StatusHttp RequestService
  8. 8NoOpNo OpLogic

How it's built

Starts on
An event in a connected app
Steps
8, with 1 branch
Size
Small: readable in one sitting
Connects to
Slack
Model
OpenRouter
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

An n8n account, plus your own Slack account, and a key for OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

Yes. It calls OpenRouter. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Not long. At 8 steps it can be read in one sitting and changed without fear.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 8 steps before you point it at anything that matters.