Claude Managed Agents adds model effort settings, memory-store webhooks, and session seeding with initial events

Releasebot·medium signal

The Claude Developer Platform's July update lets you set model effort per managed agent, expands webhook coverage to environment and memory store events, supports seeding a session with initial events, adds optional version checks on updates, and streams event deltas for threads. Memory-store webhooks are the sleeper feature: you can now observe and react to what an agent writes to long-term memory instead of auditing it after the fact. Session seeding removes the usual hack of replaying a fake conversation turn to prime an agent's state.