Automation library · Content

Auto-categorize blog posts with OpenAI and GitHub

Started by someone submitting a form, and works across GitHub and Google Sheets. 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, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

18 stepsMedium: a working afternoon
1Branch: places the flow splits
1Loop or waits
2Services it connects to

The flow

Starts it 1Model 4Logic 7Service 6

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

  1. 1Simple MemoryMemory Buffer WindowModel
  2. 2OpenAI Chat ModelLm Chat Open AiModel
  3. 3On form submissionForm triggerStarts it
  4. 4Structured Output ParserOutput Parser StructuredModel
  5. 5AI AgentAgentModel
  6. 6Get row(s) in sheetGoogle SheetsService
  7. 7List posts/articles/pagesGithubService
  8. 8Append rows with posts / article analysisGoogle SheetsService
  9. 9List FileName only / Remove duplicatesCodeLogic
  10. 10Get paths to files only from GitHub repositoryAggregateLogic
  11. 11Loop Over Posts/PagesSplit In BatchesLogic
  12. 12Get file paths only from GoogleSheetsAggregateLogic
  13. 13Merge GitHub and Google Sheets readMergeLogic
  14. 14Proces finished - Categories and tags addedFormService
  15. 15Check new repo files for AI processingCodeLogic
  16. 16SwitchSwitchLogic
  17. 17No new posts/articles in GitHubFormService
  18. 18Get post/article fileGithubService

How it's built

Starts on
Someone submitting a form
Steps
18, with 1 branch, 1 loop or waits
Size
Medium: a working afternoon
Connects to
GitHub, Google Sheets
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, plus your own GitHub and Google Sheets accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

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.