Automation library · Content

Natural language database queries with PostgreSQL

Started by an incoming Telegram message, and works across Postgres and Telegram. It puts OpenAI and OpenRouter behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 17 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI, OpenRouterRetrieval

17 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 2Model 9Logic 3Service 3

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

  1. 1When Executed by Another WorkflowExecute Workflow triggerStarts it
  2. 2ThinkTool ThinkModel
  3. 3OpenRouter Chat ModelLm Chat Open RouterModel
  4. 4Postgres Chat MemoryMemory Postgres ChatModel
  5. 5OpenRouter Chat Model1Lm Chat Open RouterModel
  6. 6Think1Tool ThinkModel
  7. 7Telegram Trigger1Telegram triggerStarts it
  8. 8CALL QUERY AGENTTool WorkflowModel
  9. 9Query agentAgentModel
  10. 10Main agentAgentModel
  11. 11Voice or TextSwitchLogic
  12. 12ACCES DATABASE WITH DYNAMIC QUERYSPostgresService
  13. 13SEND MESSAGETelegramService
  14. 14Download File1TelegramService
  15. 15TextSetLogic
  16. 16Transcribe1Open AiModel
  17. 17MergeMergeLogic

How it's built

Starts on
An incoming Telegram message
Steps
17, with 1 branch
Size
Medium: a working afternoon
Connects to
Postgres, Telegram
Model
OpenAI, 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 Postgres and Telegram accounts, and a key for OpenAI and OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an incoming Telegram message.

Does it use AI?

Yes. It calls OpenAI and 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?

Plan an afternoon. 17 steps is enough that you should read each one before running it.

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 17 steps before you point it at anything that matters.