# Automate GitHub PR linting with Gemini: n8n workflow template

> Started by another system calling it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to Gemini.

Source: https://millionrounds.com/workflow/automate-github-pr-linting-with-gemini (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [AI assistants](https://millionrounds.com/workflows?category=AI+assistants#library)

# Automate GitHub PR linting with Gemini

Started by another system calling it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to Gemini. 20 steps: a working afternoon to understand properly.

Medium Calls a model: Gemini

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fautomate-github-pr-linting-with-gemini)

**20 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**0** Services by connector: it calls them over plain HTTP

## The flow

Starts it 2 Model 2 Logic 3 Service 13

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

- 1 **Listen for Trigger from Github Workflow** Webhook *Starts it*
- 2 **Create GitHub Blob** Http Request Tool *Service*
- 3 **Create GitHub Tree** Http Request Tool *Service*
- 4 **Create GitHub Commit** Http Request Tool *Service*
- 5 **Create Pull Request** Http Request Tool *Service*
- 6 **Create Branch** Http Request Tool *Service*
- 7 **Get Branch** Http Request Tool *Service*
- 8 **Google Gemini Chat Model** Lm Chat Google Gemini *Model*
- 9 **Set Common Fields** Code *Logic*
- 10 **AI Agent** Agent *Model*
- 11 **Get PR GitHub Branch** Http Request *Service*
- 12 **Respond to Webhook** Respond To Webhook *Starts it*
- 13 **Get Latest Main Branch Commit SHA** Http Request *Service*
- 14 **Get Latest Main Branch Tree Hash** Http Request *Service*
- 15 **Get PR Files** Http Request *Service*
- 16 **Get File Contents** Http Request *Service*
- 17 **Convert Base64 to Text File** Convert To File *Service*
- 18 **Extract from File** Extract From File *Service*
- 19 **Create Code/FilePath Object** Set *Logic*
- 20 **Collect All Files Changed** Aggregate *Logic*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 20
- **Size:** Medium: a working afternoon
- **Connects to:** Nothing by connector; it calls services over plain HTTP
- **Model:** Gemini

## Questions

What does it need to run?

An n8n account, and a key for Gemini. 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 Gemini. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 20 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 20 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fautomate-github-pr-linting-with-gemini)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

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Also ai assistants, with the same services where possible, closest in size first.

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