Flowblocks
Dashboard
Dashboard
Getting Started
QuickstartHow it works
Building Workflows
The canvasGenerating with AIPreview and runsSharing and collaboration
Steps
OverviewAgentBranches and loopsGuardrails and approvalState and data
Connectors
OverviewGoogleMicrosoftDropboxOther providersMCP servers
Develop
Embedding the builderNode SDKREST API
Reference
Self-hostingEnvironment variablesLimitsFAQ

All systems operational

Building Workflows

Preview and runs

Test a workflow in the preview chat, answer its approvals, and inspect each step of a run.

The preview chat

Press Run to open a chat wired to the workflow on the canvas. Send a message and the reply streams back while the graph runs. The preview runs the graph as it is on the canvas, with no publish step.

Approvals

When a run reaches a Human approval step, or a Tool call that requires approval, it pauses. The chat shows what is about to happen and waits for you to approve or reject it. The run then follows the matching path.

Run history

Every run is saved and listed in the Runs tab of the side panel. Open one to see, for each step:

  • what it received
  • what it returned
  • how long it took
  • the error, if it failed

Model steps also show the conversation they held and the tools they called.

When a run stops early

A run ends before End in three cases:

  • a step fails
  • an approval is rejected and the Reject path leads nowhere
  • the run reaches a limit

The run's record says which, and at which step.

On this page

The preview chatApprovalsRun historyWhen a run stops early