@cloudflare/think@0.5.1

cloudflare/agents@cloudflare/think@0.5.1May 1, 2026by github-actions[bot]

AI Summary

This patch release (@cloudflare/think@0.5.1) fixes several critical issues with WebSocket handling in deployed Workers, chat stream resumption, and race conditions, while also adding support for multimodal workspace reads of images and PDFs.

Key Highlights

Fixed sub-agent WebSockets on deployed Workers by keeping browser WebSocket owned by parent Agent and forwarding events over RPC
Fixed resumed chat streams to rebuild partially hydrated assistant responses from replay chunks instead of rendering duplicate text
Fixed resume ACK race condition that could cause drill-in chat connections to miss terminal stream frames
Added multimodal-aware workspace reads for images and PDFs

New Features

Multimodal-aware workspace reads for images and PDFs while maintaining compact persisted tool results

Full Release Notes

### Patch Changes

-   [#1443](https://github.com/cloudflare/agents/pull/1443) [`e7d225b`](https://github.com/cloudflare/agents/commit/e7d225b72a743a2cf1491ebf73f06580c668e560) Thanks [@threepointone](https://github.com/threepointone)! - Fix sub-agent WebSockets on deployed Workers by keeping the browser WebSocket owned by the parent Agent and forwarding connect/message/close events to child facets over RPC.

    Fix resumed chat streams so a partially hydrated assistant response is rebuilt from replay chunks instead of rendering replayed text as a second assistant text part.

    Fix a resume ACK race where drill-in chat connections could miss the terminal stream frame if the helper completed between the resume notification and client acknowledgement.

-   [#1435](https://github.com/cloudflare/agents/pull/1435) [`b197faf`](https://github.com/cloudflare/agents/commit/b197faf0ca79d9e921d2f80c5fcafe4899995d11) Thanks [@threepointone](https://github.com/threepointone)! - Add multimodal-aware workspace reads for images and PDFs while keeping persisted tool results compact.