Box Ox 2.4.0

Agents can resume mailbox work after interruptions, share processing queues, and request message content without downloading entire conversations.

Agent APIs#

• Thread and message pagination replaces the agent API's first-100 limit.
• A durable change feed returns replay checkpoints and removal events.
• Claims have renewable leases, delayed retries, and idempotent acknowledgment.
• Shared groups coordinate agents; processing state is separate from read/unread.
• Reply idempotency works across REST and MCP, including shared groups.
• Bounded acknowledgment batches accept up to ten claims.

Compatibility: get_thread now returns metadata by default. Request includeBody: true for text and follow nextCursor. Body pages contain at most ten messages, with 32,768 characters per body and explicit truncation indicators. Use SDK and CLI 0.2.0 for these APIs. Older download URLs remain available.

Ingestion and operations#

The ingestion ledger records work before raw mail is saved. Durable dispatch, bounded concurrency, reconciliation, and owner replay recover interrupted jobs. Required screening finishes before agent access. Optional attachment extraction and semantic indexing run separately from delivery notifications.

The owner can inspect pending lag, processing latency, failed jobs, and unresolved send outcomes under /api/operations. Deployment settings control throughput and indexed text without deleting original messages or attachments.

Verification limits#

The offline capacity gate exercises production query code and real migrations with 100,000 synthetic messages, including a 1,000-message conversation. This checks data coverage and bounded reads; it does not certify Cloudflare throughput. Storage depends on message and attachment sizes. New-account installation and actual Workers Free account limits remain unverified.

Read the agent automation guide.