May 6, 2026 expands Claude Managed Agents: multiagent sessions and Outcomes go public beta, mcp_oauth credentials get background refresh, webhooks fire on lifecycle events, and sessions/events get filtering.
This release expands Claude Managed Agents on four axes: multiagent sessions and Outcomes go public beta, mcp_oauth vault credentials get background refresh, webhooks fire on lifecycle events, and sessions/events get proper filtering and sorting. All updates use the existing managed-agents-2026-04-01 beta header.
Why: Single-agent sessions can't coordinate across multiple specialized agents; Outcomes lets you declare what success looks like upfront and have the agent loop until it's met.
What: Multiagent sessions (multiple agents collaborating on one session) and Outcomes (declarative success criteria) are both now public beta.
How: Set the beta header managed-agents-2026-04-01 and use the multi-agent and define-outcomes endpoints.
Why: OAuth tokens expire mid-session; without background refresh, agents fail when their credentials silently lapse.
What: Background refresh is now supported for mcp_oauth vault credentials, keeping agents authenticated for long-running sessions.
How: No client change — configure mcp_oauth credentials in your vault and refresh runs server-side.
Why: Polling for session and vault state changes is wasteful; webhooks let your backend react to events in near-real time.
What: Webhooks now fire on session and vault lifecycle events (created, completed, errored, credential rotated, etc.).
How: Configure webhook endpoints in the managed agents API; subscribe to event types via the documented event-type list.
Why: As agent fleets grow, listing every session and event in raw chronological order makes debugging and dashboards painful.
What: Sessions can now be filtered by status; events can be filtered by type and by creation time.
How: Pass the new query parameters when listing sessions or events — see the managed-agents API reference.
Hosts: Alex Chen & Sarah Kim · Generated from the official Claude Platform release notes.
Release notes: platform.claude.com/docs/en/release-notes/api
Managed Agents docs: platform.claude.com/docs/en/managed-agents
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