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@cloudflare/ai-chat@0.9.4

cloudflare/agents@cloudflare/ai-chat@0.9.4Jul 22, 2026by github-actions[bot]

AI Summary

This patch mirrors the core agent updates from version 0.18.0, adding semantic phase grouping for spans and fixing stale state reconciliation issues during client reconnections.

Key Highlights

  • Added semantic phase grouping for agent initialization and execution spans.
  • Fixed stale `useAgentChat` server-streaming state on client reconnection.
  • Improved reconnect probes with correlation IDs.

New Features

  • Semantic phase grouping for agent spans.
  • State reconciliation fixes for server-streaming connections.

Full Release Notes

### Patch Changes

-   [#1860](https://github.com/cloudflare/agents/pull/1860) [`f5b1dd8`](https://github.com/cloudflare/agents/commit/f5b1dd814b5d7b415152afda053b5a52e086e12e) Thanks [@mattzcarey](https://github.com/mattzcarey)! - Group SDK-managed initialization, startup, chat interactions, turns, and durable submissions into semantic phases. Storage-heavy setup, hydration, recovery, request persistence, and response persistence each receive a named bucket, keeping inference and tool spans visible without discarding lower-level Durable Object SQLite spans. Each span records agent identity, storage phase, a stable marker for UI grouping, and operation-specific metadata. No-op on runtimes without the `tracing` API.

-   [#1963](https://github.com/cloudflare/agents/pull/1963) [`3ce98ff`](https://github.com/cloudflare/agents/commit/3ce98ff084fcd5f0f8433e1f20352f0a170e3e4a) Thanks [@mattzcarey](https://github.com/mattzcarey)! - Reconcile stale `useAgentChat` server-streaming state after an errored client reconnects.

    Reconnect probes now include correlation IDs, and `STREAM_RESUME_NONE` distinguishes globally idle agents from active continuations owned by another connection. The hook clears fallback streaming state only for a correlated idle response. Reconnect opens are retained while a prior resume or status transition settles, in-flight handshakes are retransmitted on replacement sockets, and all AI SDK resume entry points share one serialization gate.