Automation library · Documents and files

Send YouTube transcripts to Slack with AssemblyAI

Started by another system calling it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to OpenAI. 16 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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16 stepsMedium: a working afternoon
2Branches: places the flow splits
1Loop or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 1Model 1Logic 7Service 7

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

  1. 1Receive Slack commandWebhookStarts it
  2. 2Normalize Slack payloadSetLogic
  3. 3Extract YouTube video IDCodeLogic
  4. 4Check Video DurationHttp RequestService
  5. 5Parse and validate video durationCodeLogic
  6. 6Is video longer than limit?IfLogic
  7. 7Send duration error to SlackHttp RequestService
  8. 8Convert YouTube video to MP3Http RequestService
  9. 9 Create transcription jobHttp RequestService
  10. 10Submit audio for transcriptionHttp RequestService
  11. 11Wait for transcription processingWaitLogic
  12. 12 Check transcription statusHttp RequestService
  13. 13Extract transcript textCodeLogic
  14. 14Is transcription complete?IfLogic
  15. 15Generate AI summaryOpen AiModel
  16. 16Post result to SlackHttp RequestService

How it's built

Starts on
Another system calling it
Steps
16, with 2 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
Model
OpenAI

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. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 16 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 16 steps before you point it at anything that matters.