Streaming Events and Session Overrides for Claude Managed Agents

Anthropic updates Claude Managed Agents with session event streaming, Agent Overrides for custom configurations, and credential injection scoping.

Claude Managed Agents, Anthropic's environment where an agent session serves as the backend, is receiving several additions on the programming interface side. The most visible: streaming of session event deltas. The response, extended reflection, tool calls, and their results are streamed as they are produced, token by token, on a single stream, whereas waiting for the complete event previously imposed a blank of several seconds.

Agent Overrides start a session from a stored agent and replace part of its configuration for that session only: model, system prompt, tools, mcpservers, or skills. The original agent is neither copied nor versioned. Credential injection scoping specifies, by identifier, where an API key is injected into the output, in the header or in the request body, without the model ever seeing its value.

New webhook event types and reverse pagination are being added. Anthropic is also opening an Observability tab in the Console, with per-session metrics, namely input and output token consumption and tool usage. A cookbook illustrates the whole with a road trip planner.