Version Packages

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Releases

agents@0.21.0

Minor Changes

• #2052 f9d71d6 Thanks @cjol! - Expose WebSocketChatTransport and its connection types from the framework-neutral agents/chat/transport entry point. React peers are now optional for framework-neutral clients and servers.

• #2091 4d2084c Thanks @cjol! - Accept AI SDK flexible schemas in agentTool, including Valibot adapters, while preserving schema-driven input inference and structured output validation. Zod is no longer a peer requirement of @cloudflare/ai-chat.

Patch Changes

• #2037 1bca2a6 Thanks @cjol! - Add buildAgentPath() and buildAgentUrl() for constructing canonical root-first Agent and sub-agent addresses for external HTTP requests, WebSocket connections, callbacks, and webhooks. React sub-agent connections now share the same descendant path encoder.

• #2051 b9343a0 Thanks @AntoniTok! - Stream forwarded request bodies into sub-agents instead of buffering them in the parent Durable Object.

  Agent._cf_forwardToFacet and routeSubAgentRequest both did forwardInit.body = await req.arrayBuffer() before dispatching to a child facet, materialising the entire request body in the parent's isolate. Two consequences:

  • The read sat in front of application-level validation. Agent.fetch returns before onRequest whenever the path matches /sub/{class}/{name}, so an app that carefully bounded request bodies in onRequest still had an unbounded read ahead of it — and no way to bound it itself.
  • The cost was per hop. A nested /sub/.../sub/... address re-materialised the same bytes at every level.

  Both call sites now pass req.body through as a stream. Measured on wrangler dev --local with a handler that never reads the body, peak RSS across the workerd processes for a single POST:

  Request body	facet route, before	facet route, after	canonical route (control)
  16 MB	+75 MB	+4 MB	+2 MB
  64 MB	+268 MB	+4 MB	+2 MB
  128 MB	+546 MB	+4 MB	+2 MB

  This restores the behaviour from before #1443, which switched to an explicit RequestInit in order to set a header on WebSocket upgrades and re-attached the body with arrayBuffer() as a side effect. The Upgrade header handling from that fix is unchanged.

  One behavioural note: backpressure now reaches the client. A child that returns without reading the body will cause the remainder of the upload to be cancelled, where previously the parent drained it in full.

• #2034 efcb316 Thanks @cjol! - Send Browser Run extraction schemas under response_format.json_schema, matching the Quick Actions /json contract.

• #2023 2b2b598 Thanks @threepointone! - Treat useAgentChat observer error frames as terminal responses.

  Plain-text error bodies are no longer parsed as stream chunks or merged into an empty assistant message. Error frames now clear observer streaming, replay, recovery, and tool-continuation state even when they omit done, matching the transport-owned stream behavior.

• #1996 753a674 Thanks @mattzcarey! - Update PartyServer and the Cloudflare Workers development toolchain for @cloudflare/workers-types v5 compatibility. New Think projects now use Workers Types v5 with matching Wrangler and Vite plugin versions.

• #1994 6e77f62 Thanks @mattzcarey! - Use wrapAISDK() as the single AI SDK v6 and v7 tracing integration, removing the separate createAISDKTelemetry() callback adapter that could not preserve the invoke_agent parent hierarchy. Mark asynchronously decided AI SDK v7 top-level approval spans when they outlive their invocation.

• #2035 5d66723 Thanks @cjol! - Validate BrowserConnector tool arguments before execution and reject JSON-stringified Browser Run extraction schemas with an actionable error.

• #2049 ce0e608 Thanks @cjol! - Preserve spacing between streamed text segments separated by tool calls. Think messenger delivery and Voice now share the same boundary-aware text joining logic from agents/chat. Remove the unsafe textDeltaFromStreamChunk() messenger export; consume streams through TextStreamCallback so structured boundaries are retained.

@cloudflare/think@0.16.0

Minor Changes

• #2063 3de6c8e Thanks @cjol! - Remove the convention-driven Think framework, including the Vite plugin, generated Worker entry and virtual modules, CLI, Studio, framework helpers, and server-entry helpers. Remove the separate create-think scaffolder and its starter templates. Think remains available as an explicit runtime for hand-written Worker entries.

• #2049 ce0e608 Thanks @cjol! - Preserve spacing between streamed text segments separated by tool calls. Think messenger delivery and Voice now share the same boundary-aware text joining logic from agents/chat. Remove the unsafe textDeltaFromStreamChunk() messenger export; consume streams through TextStreamCallback so structured boundaries are retained.

Patch Changes

• #2082 9d35e81 Thanks @cjol! - Emit workspace image reads as image-data model content so AI SDK v6 routes them as images, while preserving file-data output for PDFs.

• #2023 2b2b598 Thanks @threepointone! - Treat useAgentChat observer error frames as terminal responses.

  Plain-text error bodies are no longer parsed as stream chunks or merged into an empty assistant message. Error frames now clear observer streaming, replay, recovery, and tool-continuation state even when they omit done, matching the transport-owned stream behavior.

• #1996 753a674 Thanks @mattzcarey! - Update PartyServer and the Cloudflare Workers development toolchain for @cloudflare/workers-types v5 compatibility. New Think projects now use Workers Types v5 with matching Wrangler and Vite plugin versions.

• #2062 882ae63 Thanks @ben-reitz! - Expose TurnConfig.repairToolCall so callers can repair malformed tool calls before tool execution.

@cloudflare/voice-plivo@0.1.0

Minor Changes

• #2048 3172a23 Thanks @cjol! - Add Plivo audio streaming adapter for the Cloudflare Agents voice pipeline.

  PlivoAdapter bridges Plivo's bidirectional audio streaming WebSocket protocol to VoiceAgent, structured as a sibling to the Twilio provider. Audio is mulaw 8kHz on the Plivo side, decoded and resampled to 16kHz PCM for the agent. Includes barge-in support via Plivo's clearAudio event and a setupPlivoApplication() helper that configures the Plivo application and phone number through the REST API.

@cloudflare/ai-chat@0.10.2

Patch Changes

• #2023 2b2b598 Thanks @threepointone! - Treat useAgentChat observer error frames as terminal responses.

  Plain-text error bodies are no longer parsed as stream chunks or merged into an empty assistant message. Error frames now clear observer streaming, replay, recovery, and tool-continuation state even when they omit done, matching the transport-owned stream behavior.

• #2052 f9d71d6 Thanks @cjol! - Expose WebSocketChatTransport and its connection types from the framework-neutral agents/chat/transport entry point. React peers are now optional for framework-neutral clients and servers.

• #2091 4d2084c Thanks @cjol! - Accept AI SDK flexible schemas in agentTool, including Valibot adapters, while preserving schema-driven input inference and structured output validation. Zod is no longer a peer requirement of @cloudflare/ai-chat.

@cloudflare/voice@0.3.6

Patch Changes

• #2083 48eeba7 Thanks @cjol! - Define VoiceTurnContext.messages as completed history before the current transcript for both text and audio turns, preventing duplicate user messages when following the documented prompt construction.

  onTurn() implementations that previously passed context.messages directly as complete LLM input must now append transcript exactly once. The transcript is still persisted before onTurn() runs, so direct getConversationHistory() calls continue to include it.

• #2004 0efd545 Thanks @cjol! - Pass the full keyterms array to Workers AI Flux and Nova-3 STT instead of only the first term.

• #2049 ce0e608 Thanks @cjol! - Preserve spacing between streamed text segments separated by tool calls. Think messenger delivery and Voice now share the same boundary-aware text joining logic from agents/chat. Remove the unsafe textDeltaFromStreamChunk() messenger export; consume streams through TextStreamCallback so structured boundaries are retained.

@cloudflare/worker-bundler@0.2.3

Patch Changes

• #2043 38bbf5a Thanks @abstractedfox! - Python package support

• #2016 2ee8424 Thanks @ben-reitz! - Fix dependency extraction for npm tarballs whose enclosing directory is not named package, including DefinitelyTyped packages.

@cloudflare/agent-think@0.0.6

Patch Changes

• Updated dependencies [9d35e81, 1bca2a6, b9343a0, efcb316, 2b2b598, 753a674, f9d71d6, 882ae63, 4d2084c, 6e77f62, 3de6c8e, 5d66723, ce0e608]:
  • @cloudflare/think@0.16.0
  • agents@0.21.0
  • @cloudflare/ai-chat@0.10.2

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.