Connections and data types

Edges carry data from one node to another. Every connection has a type—image, video, or text—and Sprello only allows connections that make sense. This keeps your workflow valid as you build.

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What connects to what

A few connections aren’t allowed, because the model can’t use them—for example, a video output can’t feed an image generator’s reference slot. Sprello blocks these as you draw them.

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Connections fill in prompts and references

When you connect a node into a generator, Sprello wires it in automatically:

• Text → a generator adds a reference badge like @Product description to the prompt. The generator resolves it to the real text when it runs.
• Image → a generator’s reference slot adds the image as a reference. (Generate Image and Generate Text accept reference images; Generate Video uses an image as a source frame.)

You can mix typed text and references freely in a prompt: write your own wording around the @ badges.

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Connection limits

• A generator’s reference image slot has a maximum that depends on the model—some accept a few references, others many. Sprello checks capacity before allowing a new connection.
• Single-value slots accept one connection.

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Edges are the source of truth

A reference only means something if there’s an edge behind it. Remove the connection and Sprello cleans the matching @ reference out of the prompt for you—so prompts never point at nodes that aren’t wired in.

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