Claude Managed Agents get per-agent effort levels

ClaudeDevs laid out a batch of new Claude Managed Agents features on Twitter. The headline: effort level is now set per agent, and dialing it down makes responses faster and cheaper.

Session creation can now bundle up to 50 user_message and define_outcome events, which previously meant separate API calls. You can attach up to 500 skills to a session to give agents task-specific instructions. Webhooks now cover environments and memory stores, and there’s event streaming for sub-agents.