Agent collaboration and subtasks

Agents are no longer isolated. They can call each other for help and spawn subtasks that feed into larger workflows.

Collaboration tools

• call_agent — synchronous inline collaboration. An agent can call another agent mid-run to get research, analysis, or a second opinion, then continue with the result.
• create_subtask — spawn a child task that goes through the full orchestration flow. Supports dependsOn to block execution until upstream subtasks complete.
• ask_human — pause execution and wait for human input. The task board shows a "Needs Reply" indicator and you can respond inline from the task detail view.

Dependency chains

Subtasks can declare dependencies on other subtasks. Blocked tasks automatically unblock when dependencies complete. If a dependency fails, all downstream dependents are cancelled.

Loop prevention

Two guardrails prevent infinite delegation: title deduplication across the ancestor chain, and automatic reassignment when the orchestrator would assign a task back to an agent already in the parent chain.