Automation library · Data collection

Grade system prompts in Google Sheets with Gemini

Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to Gemini. 11 steps: a working afternoon to understand properly.

MediumCalls a model: Gemini

11 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 6Logic 2Service 2

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

  1. 1Start Grading ProcessManual triggerStarts it
  2. 2Gemini Candidate ModelLm Chat Google GeminiModel
  3. 3Gemini Grader ModelLm Chat Google GeminiModel
  4. 4Gemini Parser Fixer ModelLm Chat Google GeminiModel
  5. 5Read Prompts from SheetsGoogle SheetsService
  6. 6Candidate Evaluation AgentAgentModel
  7. 7Grade Evaluation AgentAgentModel
  8. 8Parse Grade SchemaOutput Parser StructuredModel
  9. 9Limit to Last 10 PromptsLimitLogic
  10. 10Update Grade in SheetsGoogle SheetsService
  11. 11Set Sample Grading TaskSetLogic

How it's built

Starts on
An event in a connected app
Steps
11
Size
Medium: a working afternoon
Connects to
Google Sheets
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on an event in a connected app.

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. 11 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 11 steps before you point it at anything that matters.