Automation library · Setup and learning

Learn evaluate tool. Tutorial for beginners with Gemini

Started by an event in a connected app. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to Gemini. 14 steps: a working afternoon to understand properly.

MediumCalls a model: Gemini

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

The flow

Starts it 2Model 4Logic 4Service 4

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

  1. 1When fetching a dataset rowEvaluation triggerStarts it
  2. 2CalculatorTool CalculatorModel
  3. 3Google Gemini Chat ModelLm Chat Google GeminiModel
  4. 4Google Gemini Chat Model1Lm Chat Google GeminiModel
  5. 5When clicking ‘Execute workflow’Manual triggerStarts it
  6. 6Get inputSetLogic
  7. 7AI AgentAgentModel
  8. 8CorectnessEvaluationService
  9. 9Get manual inputSetLogic
  10. 10Evaluation?EvaluationService
  11. 11Set correctnessEvaluationService
  12. 12Get outputSetLogic
  13. 13Return chat responseNo OpLogic
  14. 14Set output EvaluationEvaluationService

How it's built

Starts on
An event in a connected app
Steps
14
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 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. 14 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 14 steps before you point it at anything that matters.