Claude Managed Agents sessions can be seeded with initial events
UpdateVerifiedAdded Sep 22, 2026
POST /v1/sessions accepts initial_events with up to 50 user.message and user.define_outcome events, and a non-empty list starts the agent loop in the same call.
Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.
More Claude Platform releases
Every Claude Platform release| Date | Release | Type |
|---|---|---|
| Jul 22 | Claude Managed Agents agents accept an effort level in model configuration Update | Update |
| Jul 22 | Claude Managed Agents webhooks cover environment and memory store lifecycle Update | Update |
| Jul 22 | Claude Managed Agents agent updates no longer require a version field Update | Update |
| Jul 22 | Claude Managed Agents thread event streams support event deltas Update | Update |
| Jul 24 | Claude Opus 5 launches with a 1M token context window at $5 / $25 per MTok GA | GA |
| Jul 24 | Claude Opus 5 only allows disabling thinking at effort high or below Update | Update |
| Jul 24 | Effort is the primary control for Claude Opus 5 Update | Update |
| Jul 24 | Mid-conversation tool changes enter beta on the Claude API Beta | Beta |
