New features, fixes, and API updates, shipped continuously.
May 25, 2026

Choose how action input variables are mapped

Action input variable mapping choices

When an action needs an input variable, you can now choose how Synthflow should fill the value: collect it from the caller, use an action output, use a system variable, use a pre-call variable, or enter a fixed value.

Action placeholders and mapping explains how input variables work across actions.

Call history now preserves deleted actions

Deleted action shown in call history

If an action used during a call is deleted later, the call details will now show a deleted-action placeholder instead of removing it entirely.