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Image Generation

Generate an image from a description.

What it does

Generates an image from a description. For social posts, simple illustrations and mockups — not for anything that must look like a specific real place or person.

What you need

API key from OpenAI. platform.openai.com → API keys. This is for the vision and image tools only — the key your agents think with is set separately, under LLM Connections.

Connecting it

Credentials belong to one project, not to your workspace and not to you. A system built for one client never runs on another client's account, and a package handed to a business runs on theirs.

  1. Open the project and stay on the Visual Editor tab.
  2. Open the Tools & Integrations rail on the right.
  3. Find this tool, open it, and paste the credential.

To change it later, open the same panel — you can leave the key blank to keep the stored one and change only the other field.

Using it in a step

An Action step runs one tool with the arguments you type, exactly as written, with no model involved — so it costs nothing per run and behaves the same every time. Add one from the canvas toolbar, choose Image Generation, and fill in:

Field Required What goes in it
prompt yes Describe the scene, style and mood in one sentence.
size no Optional. Square unless you say otherwise.

Values can carry results forward: {{previous}} is the step before, and {{row:column}} is a column from the row this run is about when the trigger fans out.

Press Try it to run the step on its own before committing to a whole sequence.

Using it with an agent

Tick Image Generation on any agent that should be able to call it, and the agent decides when to. Use an agent when the judgement matters and an Action step when the certainty does.

A worked example

A restaurant's weekly social post needs a header image. The agent writes the caption and generates a matching image in the same run.

When it goes wrong

The result is generic. Describe the scene, the style and the mood in one sentence. A three-word prompt gets a three-word picture.

See also