Automation library · Data collection

Generate and evaluate AI prompts with Gemini and OpenRouter

Started by another system calling it, and works across Supabase. It hands the judgement calls to Gemini, Groq and one other. 14 steps: a working afternoon to understand properly.

MediumCalls a model: Gemini, Groq

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

The flow

Starts it 2Model 8Logic 3Service 1

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

  1. 1WebhookWebhookStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3OpenRouter Chat ModelLm Chat Open RouterModel
  4. 4Groq Chat ModelLm Chat GroqModel
  5. 5Cohere Chat ModelLm Chat CohereModel
  6. 6Extract GoalCodeLogic
  7. 7Creative Prompt AgentAgentModel
  8. 8Marketing Prompt AgentAgentModel
  9. 9Technical Prompt AgentAgentModel
  10. 10Best Prompt EvaluatorAgentModel
  11. 11MergeMergeLogic
  12. 12Respond to WebhookRespond To WebhookStarts it
  13. 13Combine Agent OutputsCodeLogic
  14. 14Create a rowSupabaseService

How it's built

Starts on
Another system calling it
Steps
14
Size
Medium: a working afternoon
Connects to
Supabase
Model
Gemini, Groq, OpenRouter

Questions

What does it need to run?

An n8n account, plus your own Supabase account, and a key for Gemini and Groq. 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, Groq and OpenRouter. 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.