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anthropic Claude Platform Release Notes ·

Anthropic Updates Claude Managed Agents: Effort Levels, Webhooks, and Session Seeding

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Anthropic has rolled out several enhancements to its Claude Managed Agents platform, introducing the ability to set `effort` levels for model configurations and expanding webhooks to cover environment and memory store lifecycles. Developers can now also seed new sessions with initial events, streamlining agent interactions from the start. These updates provide greater control over agent behavior, improve real-time observability, and simplify the initialization process, benefiting engineers building complex AI applications. Additional changes include optional versioning for agent updates and support for event deltas in session thread event streams.

  • →Set effort levels for Claude Managed Agents model configurations
  • →New webhook events for environment and memory store lifecycle
  • →Seed new Claude Managed Agents sessions with initial events
  • →Session thread event streams support event deltas
  • →`version` field is now optional for updating Claude Managed Agents
Features (4) ›
  • Set effort levels for Claude Managed Agents model configurations

    Agents can now be configured with an `effort` level inside the model object when created, allowing developers to influence how the agent performs its tasks.

  • New webhook events for environment and memory store lifecycle

    Webhooks for Claude Managed Agents now include `environment.*` and `memory_store.*` event types, enabling developers to react to lifecycle changes without polling.

  • Seed new Claude Managed Agents sessions with initial events

    When creating a session, developers can pass up to 50 `user.message` and `user.define_outcome` events as `initial_events` to immediately start the agent loop without a separate send-events request.

  • Session thread event streams support event deltas

    Session thread event streams now support `event_deltas` query parameters, allowing real-time preview of a subagent's text generation within the specific thread being read.

Enhancements (1) ›
  • `version` field is now optional for updating Claude Managed Agents

    The `version` field is now optional when updating an agent; it can be supplied for optimistic concurrency checks or omitted to apply the update unconditionally.

Read the original announcement →

https://platform.claude.com/docs/en/release-notes/overview

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