Durable execution - Veryfront

Durable execution stores the work associated with a conversation or project. It tracks run identity, lifecycle, replayable output, waiting checkpoints, resume signals, and cancellation.

What it owns

Data	Meaning
Canonical run	Shared execution record with run ID, kind, owner, parent run, root run, status, and waiting reason.
Agent run	Conversation-owned execution for chat and project-agent work.
Workflow run	Project-owned execution for a workflow target.
Job run	Project-owned execution for background work.
Run event	Ordered payload for text, tools, reasoning, custom data, and terminal updates.
Waiting checkpoint	Stored state for paused work.
Resume signal	Tool result, approval, event, or input response that moves a waiting run forward.
Completion	Terminal status plus usage, result, and error metadata.

Run types

Run type	Owner	Started by	Represents
Agent run	Conversation	Chat request or agent trigger.	Agent execution attached to a conversation.
Workflow run	Project	Workflow start request.	Workflow target and step graph state.
Job run	Project	Job start request or cron trigger.	Background execution of a target.

Workflows, tasks, jobs, and cron jobs

These concepts share durable run infrastructure, but they are different resources.

Concept	Meaning
Workflow definition	Multi-step automation definition.
Workflow run	Durable execution of a workflow.
Task definition	Developer-defined background work target.
Job run	Durable execution of a target, including task targets.
Cron job	Schedule that creates job runs.

See AG-UI event reference for event types.