Sandbox containment is promoted from research topic to product feature

Claim

Anthropic launched Claude Managed Agents, composable APIs for deploying cloud-hosted agents at scale with sandboxed execution, checkpointing, scoped credentials and tracing, while Meta shuttered its internal token-spending leaderboard after the rankings leaked.

Reporting date: 2026-04-08 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

• Welcome to April 8, 2026 (theinnermostloop.substack.com)