Tools #Anthropic #AI agents Oct 11, 2026 · Originally published Oct 9

Claude Managed Agents gets dynamic workflows in beta: an agent can write a program that runs many agents in phases and combines their results

For large jobs such as reviewing hundreds of documents, the agent writes a workflow that the server runs in the background instead of grinding through items one by one.

Primary source Claude Platform release notes · platform.claude.com Read the original ↗

// Key points

It requires the managed-agents-2026-04-01 beta header; a workflow is a program that runs many agents in phases and combines their results, and the server runs it in the background as a workflow run.
To turn it on, set the agent’s multiagent field to {"type": "multiagent_20261001", "workflows": {"type": "enabled"}}, and tell the agent in its system prompt when to start a run.
Runs are followed through workflow_run.* events on the session’s event stream.

Builder's takeUnderstanding a whole folder at once in AI Cloud Drive is exactly this case. I’d try it first on summarizing and tagging a few hundred documents, watching whether the phased, combined results are stable and what the total bill is. The more agents run in parallel, the more network and tool permissions need tightening first, which is the same lesson as today’s report on unintended actions.

// Background · from #Anthropic

Full timeline →