Automation library · AI assistants

Facebook Messenger Bot with OpenAI and Image

Started by another system calling it. It calls services over plain HTTP rather than through connectors. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 18 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

18 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 1Model 7Logic 7Service 3

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

  1. 1OpenAI Chat ModelLm Chat Open AiModel
  2. 2Simple MemoryMemory Buffer WindowModel
  3. 3CalculatorTool CalculatorModel
  4. 4WikipediaTool WikipediaModel
  5. 5Webhook1WebhookStarts it
  6. 6AI Agent MessengerAgentModel
  7. 7Identify Message TypeFunctionLogic
  8. 8CodeCodeLogic
  9. 9Identify and ReRoute Message TypesSwitchLogic
  10. 10Code1CodeLogic
  11. 11Download ImageHttp RequestService
  12. 12Download AudioHttp RequestService
  13. 13Edit Fields1SetLogic
  14. 14Send ResponseHttp RequestService
  15. 15Analyze imageOpen AiModel
  16. 16Audio TranscriberOpen AiModel
  17. 17Edit Fields3SetLogic
  18. 18Edit Fields2SetLogic

How it's built

Starts on
Another system calling it
Steps
18, with 1 branch
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
Model
OpenAI
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

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

What starts it?

It starts on another system calling it.

Does it use AI?

Yes. It calls OpenAI. 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. 18 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 18 steps before you point it at anything that matters.