How do I chain tools together?

Step-by-step

1. Open /workflows/builder/ (Pro).
2. Drag a tool from the left palette onto the canvas. It appears as a card with input dots on the left and output dots on the right.
3. Drag a connection from the output dot of tool A to the input dot of tool B. A dotted line appears, then turns solid when connected.
4. Map fields. Click the connection — a panel opens. Pick which output field of A maps to which input field of B (e.g. tool_a.headlines → tool_b.topic_list).
5. Repeat for as many steps as you need.
6. Test single step: click the ▶ icon on any node to run just that step in isolation.
7. Test full chain: click Run workflow in the top bar.

Output transformations between steps

Click a connection to access:

• Filter: keep only items matching a condition.
• Map: transform output (e.g. uppercase, extract field).
• Limit: take first N items.
• Branch: split path conditionally.

Variables

At any node you can reference earlier outputs with {{step_3.output}} syntax. The variable autocomplete shows available variables.

Saving

• Save stores it as a draft.
• Publish locks the version and creates a stable run URL you can share or schedule.
• Fork lets others copy your workflow as their starting point.