Changelog

New Features

Postgres Sandbox Checkpoint Store: Added PostgresCheckpointStore for storing sandbox checkpoints directly in PostgreSQL, allowing multi-replica deployments to restore sessions without S3 or shared filesystems. Checkpoints are chunked, written transactionally, deduplicated by SHA-256 and verified on read. It is opt-in; existing checkpoint defaults are unchanged. (#11186)
Framework Managers as Routine Executors: Company Routines can now use the internal Product Manager or OS Manager as executors through declarations, the Routine API and human-chat configuration. Reserved manager IDs resolve only from the owning AgentOS and cannot be replaced by saved or user-defined components. Includes an optional weekly Product Manager review. (#11193)
Sandbox Checkpoint Retention: Sandboxes now retain the three newest checkpoints per session by default. Configure retain_checkpoints=None to preserve every checkpoint. Unpublished or superseded checkpoints are retired and deleted after the run outcome is safely stored. (#11187)

Sandbox Session Cleanup: Deleting a sandbox-backed session now removes its warm computer and associated checkpoint objects after the database transaction commits. Single, bulk and user-scoped session deletion are supported without affecting sessions the caller does not own. (#11187)
OS Manager Specialist Visibility: Platform Builder and Platform Manager now appear as members of OS Manager in /teams and /teams/os-manager-internal. They remain excluded from the reusable application registry, top-level agent discovery and standalone agent routes. (#11198)
Claude Defaults to Sonnet 5.5: Claude() now defaults to claude-sonnet-5-5, replacing the deprecated claude-sonnet-4-5-20250929 before its retirement. Non-default temperature, top_p and top_k values are dropped with a warning for newer Claude models that reject those sampling parameters. This behavior applies across Anthropic, Bedrock, Foundry and Vertex providers. (#11212)

Checkpoint Retention: Only the three newest sandbox checkpoints are retained by default. Opening a checkpoint for an older run can now raise CheckpointObjectNotFound. Set retain_checkpoints=None to restore the previous unlimited-retention behavior. (#11187)
Durable Sandbox Startup Validation: AgentOS now fails at startup when a durable-queue sandbox uses the host-local default checkpoint store. Configure a checkpoint store shared by every replica, such as PostgresCheckpointStore or S3CheckpointStore. Previously this invalid configuration failed only on the first submission. (#11187)

Missing Sandbox Checkpoints: A committed checkpoint missing from storage now ends the turn with a clear, non-retryable error, retires the newly created computer and releases the session. Previously the run remained RUNNING, exhausted queue retries and blocked later turns on the session. (#11187)
Company Routine Execution: Denied status writes and failed Studio runner delegation now correctly fail the Routine. Stale archived catalog entries no longer collide with owned reserved managers. (#11193)

fix: sandbox checkpoint recovery, retention and session-delete cleanup by @ysolanky in #11187
fix: show platform specialists under OS Manager by @ashpreetbedi in #11198
feat: add PostgresCheckpointStore for sandbox checkpoints in Postgres by @ysolanky in #11186
feat: support framework managers as Company Routine executors by @ashpreetbedi in #11193
fix: default Claude to sonnet-5-5 before sonnet-4-5 retires by @kausmeows in #11212
fix: default OpenAITools image generation to gpt-image-2 by @23821 in #10824
chore: split Company db suites out of test-db and add a sixth unit-test shard by @harshsinha03 in #11213
fix: send adaptive thinking when a Claude model rejects a thinking budget by @harshsinha03 in #11215
chore: Release v3.1.8 by @kausmeows in #11208

Full Changelog: v3.1.7...v3.1.8