fix(agents): fire useAgentChat onToolCall only after the stream ends by threepointone · Pull Request #2361 · cloudflare/agents

threepointone · 2026-09-24T15:59:18Z

Summary

useAgentChat fired onToolCall for tool calls while the response was still streaming, including server tools the server was about to run. An app that answered an unknown tool with an error sent the server a false failure for that call, and that turned off auto-continuation for the turn.

onToolCall now runs only once the response stream has ended (the status is neither streaming nor submitted, and no server stream is being observed). It fires for each tool call still waiting for a result. By then, server tools have their outputs, so only client tools are left.

Tests

New React test in packages/ai-chat/src/react-tests/use-agent-chat.test.tsx: a server tool streamed mid-turn does not reach onToolCall, and a client tool still does after the stream ends.
Two existing With client side tool calls status remains ready after initial tool call. #1157 tests adapted to the new timing.
Docs: docs/agents/chat-agents.md.

…2195) Co-authored-by: Cursor <cursoragent@cursor.com>

changeset-bot · 2026-09-24T15:59:23Z

🦋 Changeset detected

Latest commit: 22dbebb

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
agents	Patch
@cloudflare/agent-think	Patch

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agent-think · 2026-09-24T16:01:56Z

🟡 agents import sizes

Measured 344 runtime imports as minified bundles. The primary size is gzip; raw minified size is included for diagnosis. An existing import growing by more than 10% is marked red. This report is informational.

Red	Yellow	Green	Unchanged	New	Removed
0	3	0	341	0	0

Compared abda4e3a with 22dbebbc. Open workflow run.

Changed imports (3)

Status	Import	Base gzip	Head gzip	Delta
🟡	`agents/chat/transport#WebSocketChatTransport`	3.3 KiB	3.3 KiB	+10 B (+0.29%)
🟡	`agents/chat/react#WebSocketChatTransport`	6.2 KiB	6.2 KiB	+11 B (+0.17%)
🟡	`agents/chat/react#useAgentChat`	133.5 KiB	133.6 KiB	+89 B (+0.07%)

All 344 current runtime imports

Status	Import	Gzip	Raw minified
⚪	`agents#__DO_NOT_USE_WILL_BREAK__agentContext`	261.1 KiB	1141.0 KiB
⚪	`agents#__DO_NOT_USE_WILL_BREAK__withInvocationScope`	261.1 KiB	1141.0 KiB
⚪	`agents#Agent`	261.1 KiB	1141.0 KiB
⚪	`agents#AGENT_TOOL_MILESTONE_PART`	261.1 KiB	1141.0 KiB
⚪	`agents#AGENT_TOOL_PROGRESS_PART`	261.1 KiB	1141.0 KiB
⚪	`agents#buildAgentPath`	261.7 KiB	1143.3 KiB
⚪	`agents#buildAgentUrl`	261.8 KiB	1143.7 KiB
⚪	`agents#callable`	261.1 KiB	1141.0 KiB
⚪	`agents#camelCaseToKebabCase`	261.1 KiB	1141.0 KiB
⚪	`agents#createHeaderBasedEmailResolver`	261.3 KiB	1141.4 KiB
⚪	`agents#DEFAULT_AGENT_STATIC_OPTIONS`	261.1 KiB	1141.0 KiB
⚪	`agents#DurableObjectOAuthClientProvider`	261.1 KiB	1141.0 KiB
⚪	`agents#getAgentByName`	261.1 KiB	1141.0 KiB
⚪	`agents#getCurrentAgent`	261.1 KiB	1141.0 KiB
⚪	`agents#getSubAgentByName`	261.4 KiB	1141.6 KiB
⚪	`agents#isDurableObjectCodeUpdateReset`	261.1 KiB	1141.0 KiB
⚪	`agents#isDurableObjectMemoryLimitReset`	261.1 KiB	1141.0 KiB
⚪	`agents#isDurableObjectStorageReset`	261.1 KiB	1141.0 KiB
⚪	`agents#isPlatformTransientError`	261.1 KiB	1141.0 KiB
⚪	`agents#MCP_SERVER_ID_MAX_LENGTH`	261.1 KiB	1141.0 KiB
⚪	`agents#MessageType`	261.2 KiB	1141.3 KiB
⚪	`agents#normalizeServerId`	261.1 KiB	1141.0 KiB
⚪	`agents#parseSubAgentPath`	261.1 KiB	1141.0 KiB
⚪	`agents#routeAgentEmail`	261.4 KiB	1141.7 KiB
⚪	`agents#routeAgentRequest`	261.7 KiB	1142.9 KiB
⚪	`agents#routeSubAgentRequest`	261.3 KiB	1141.5 KiB
⚪	`agents#SqlError`	261.1 KiB	1141.0 KiB
⚪	`agents#StreamingResponse`	261.1 KiB	1141.0 KiB
⚪	`agents#SUB_PREFIX`	261.1 KiB	1141.0 KiB
⚪	`agents#unstable_callable`	261.2 KiB	1141.2 KiB
⚪	`agents/agent-tools#agentTool`	112.5 KiB	538.2 KiB
⚪	`agents/browser#BrowserConnector`	50.7 KiB	177.3 KiB
⚪	`agents/browser#browserContent`	36.3 KiB	127.4 KiB
⚪	`agents/browser#browserExtract`	36.3 KiB	127.4 KiB
⚪	`agents/browser#browserLinks`	36.3 KiB	127.4 KiB
⚪	`agents/browser#browserMarkdown`	36.3 KiB	127.4 KiB
⚪	`agents/browser#browserPdf`	36.3 KiB	127.3 KiB
⚪	`agents/browser#BrowserRenderingError`	36.0 KiB	126.7 KiB
⚪	`agents/browser#browserScrape`	36.3 KiB	127.4 KiB
⚪	`agents/browser#browserScreenshot`	36.3 KiB	127.3 KiB
⚪	`agents/browser#browserSnapshot`	36.3 KiB	127.4 KiB
⚪	`agents/browser#CdpSession`	37.3 KiB	130.1 KiB
⚪	`agents/browser#CodemodeRuntime`	39.6 KiB	139.0 KiB
⚪	`agents/browser#connectBrowser`	37.9 KiB	131.7 KiB
⚪	`agents/browser#connectBrowserSession`	37.6 KiB	130.8 KiB
⚪	`agents/browser#connectUrl`	37.7 KiB	130.9 KiB
⚪	`agents/browser#createBrowserSession`	36.4 KiB	127.7 KiB
⚪	`agents/browser#DEFAULT_EXEC_SWEEP_IDLE_MS`	36.0 KiB	126.6 KiB
⚪	`agents/browser#DEFAULT_SWEEP_IDLE_MS`	36.0 KiB	126.6 KiB
⚪	`agents/browser#deleteBrowserSession`	36.1 KiB	126.9 KiB
⚪	`agents/browser#DurableBrowserSessionStore`	36.4 KiB	127.6 KiB
⚪	`agents/browser#getBrowserRecording`	36.2 KiB	127.1 KiB
⚪	`agents/browser#listBrowserTargets`	36.1 KiB	126.9 KiB
⚪	`agents/browser#loadCdpSpec`	36.6 KiB	128.3 KiB
⚪	`agents/browser#runQuickAction`	36.0 KiB	126.6 KiB
⚪	`agents/browser/ai#createBrowserRuntime`	147.2 KiB	633.5 KiB
⚪	`agents/browser/ai#createBrowserTools`	147.2 KiB	633.5 KiB
⚪	`agents/browser/ai#createQuickActionTools`	122.5 KiB	554.3 KiB
⚪	`agents/browser/tanstack-ai#createBrowserTools`	162.9 KiB	702.4 KiB
⚪	`agents/channels#ChannelHost`	3.3 KiB	9.1 KiB
⚪	`agents/channels#consumeChunks`	237 B	321 B
⚪	`agents/channels#createUserIdentityStore`	1.3 KiB	3.2 KiB
⚪	`agents/channels#fallback`	155 B	160 B
⚪	`agents/channels#fallbackChannel`	893 B	1.9 KiB
⚪	`agents/channels#fanout`	151 B	156 B
⚪	`agents/channels#fanoutChannel`	875 B	1.9 KiB
⚪	`agents/channels#identityKey`	178 B	223 B
⚪	`agents/channels#isChannelMessageSurface`	271 B	452 B
⚪	`agents/channels#linkChannelIdentities`	113 B	99 B
⚪	`agents/channels#matchesPath`	110 B	96 B
⚪	`agents/channels#routes`	307 B	507 B
⚪	`agents/channels#UserIdentityConflictError`	248 B	335 B
⚪	`agents/channels/ai-sdk#createSendMessageTool`	112.2 KiB	537.4 KiB
⚪	`agents/channels/ai-sdk#toChannelChunks`	112.5 KiB	538.4 KiB
⚪	`agents/channels/email#email`	23.5 KiB	75.4 KiB
⚪	`agents/channels/email#inboundEmail`	22.3 KiB	72.3 KiB
⚪	`agents/channels/slack#slack`	5.5 KiB	14.6 KiB
⚪	`agents/channels/slack#slackWebhook`	2.2 KiB	5.1 KiB
⚪	`agents/channels/tanstack-ai#createSendMessageTool`	16.2 KiB	68.4 KiB
⚪	`agents/channels/telegram#telegram`	3.8 KiB	10.3 KiB
⚪	`agents/channels/telegram#telegramWebhook`	1.6 KiB	3.6 KiB
⚪	`agents/channels/voice#browserVoice`	1010 B	2.2 KiB
⚪	`agents/chat#AbortRegistry`	2.5 KiB	8.9 KiB
⚪	`agents/chat#AGENT_TOOL_STREAM_PROGRESS_BUMP_THROTTLE_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#AgentToolProgressEmitter`	2.7 KiB	9.5 KiB
⚪	`agents/chat#AgentToolStreamProgressThrottle`	2.4 KiB	8.3 KiB
⚪	`agents/chat#aiSdkRecoveryCodec`	2.3 KiB	8.2 KiB
⚪	`agents/chat#applyAgentToolEvent`	3.2 KiB	11.0 KiB
⚪	`agents/chat#applyChunkToParts`	2.3 KiB	8.2 KiB
⚪	`agents/chat#applyToolUpdate`	2.4 KiB	8.4 KiB
⚪	`agents/chat#AutoContinuationController`	2.3 KiB	8.2 KiB
⚪	`agents/chat#awaitWithDeadline`	2.4 KiB	8.4 KiB
⚪	`agents/chat#broadcastTransition`	3.2 KiB	11.6 KiB
⚪	`agents/chat#buildChatRecoveringFrame`	2.4 KiB	8.4 KiB
⚪	`agents/chat#buildInClauseStrings`	2.4 KiB	8.4 KiB
⚪	`agents/chat#bumpChatRecoveryProgress`	2.4 KiB	8.3 KiB
⚪	`agents/chat#byteLength`	2.5 KiB	8.5 KiB
⚪	`agents/chat#CHAT_LAST_TERMINAL_KEY`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_MESSAGE_TYPES`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERING_FLAG_TTL_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERING_KEY`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_ALARM_DEBOUNCE_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_INCIDENT_KEY_PREFIX`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_INCIDENT_TTL_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_PROGRESS_KEY`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_STABLE_RETRY_DELAY_SECONDS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_RECOVERY_TASK_NAME`	2.3 KiB	8.2 KiB
⚪	`agents/chat#CHAT_STREAM_PROGRESS_CREDIT_THROTTLE_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#ChatRecoveryEngine`	4.5 KiB	15.5 KiB
⚪	`agents/chat#chatRecoveryTaskRunOptions`	2.4 KiB	8.6 KiB
⚪	`agents/chat#ChatStreamStalledError`	2.4 KiB	8.3 KiB
⚪	`agents/chat#classifyAgentToolChildRecovery`	2.4 KiB	8.5 KiB
⚪	`agents/chat#clearChatTerminal`	2.3 KiB	8.3 KiB
⚪	`agents/chat#clientResolvableToolNames`	2.3 KiB	8.3 KiB
⚪	`agents/chat#ContinuationState`	2.7 KiB	9.8 KiB
⚪	`agents/chat#createAgentToolEventState`	2.3 KiB	8.3 KiB
⚪	`agents/chat#createChatFiberSnapshot`	2.5 KiB	8.6 KiB
⚪	`agents/chat#createChatRecoveryTaskDefinition`	2.6 KiB	9.0 KiB
⚪	`agents/chat#createChatStreams`	6.4 KiB	22.1 KiB
⚪	`agents/chat#createChatTurnTaskDefinition`	2.7 KiB	8.9 KiB
⚪	`agents/chat#createToolsFromClientSchemas`	114.3 KiB	545.4 KiB
⚪	`agents/chat#crossMessageToolResultUpdate`	2.4 KiB	8.6 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_MAX_ATTEMPTS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_MAX_OOM_RETRIES`	2.3 KiB	8.2 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_MAX_WORK`	2.3 KiB	8.2 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_NO_PROGRESS_TIMEOUT_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_STABLE_TIMEOUT_MS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#DEFAULT_CHAT_RECOVERY_TERMINAL_MESSAGE`	2.4 KiB	8.3 KiB
⚪	`agents/chat#dispatchChatRecoveryToHandoff`	3.0 KiB	9.9 KiB
⚪	`agents/chat#drainInteractionApplies`	2.3 KiB	8.3 KiB
⚪	`agents/chat#enforceRowSizeLimit`	3.5 KiB	11.2 KiB
⚪	`agents/chat#hasIncompleteToolBatch`	2.4 KiB	8.6 KiB
⚪	`agents/chat#interceptAgentToolBroadcast`	2.5 KiB	8.7 KiB
⚪	`agents/chat#isPlatformFailure`	2.6 KiB	8.9 KiB
⚪	`agents/chat#isReplayChunk`	2.4 KiB	8.7 KiB
⚪	`agents/chat#iterateWithStallWatchdog`	2.6 KiB	8.8 KiB
⚪	`agents/chat#KV_DELETE_MAX_KEYS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#listActiveChatRecoveryIncidents`	2.4 KiB	8.4 KiB
⚪	`agents/chat#MAX_BOUND_PARAMS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#MessageType`	2.4 KiB	9.0 KiB
⚪	`agents/chat#normalizeToolInput`	2.3 KiB	8.2 KiB
⚪	`agents/chat#parseProtocolMessage`	2.5 KiB	9.0 KiB
⚪	`agents/chat#partAwaitsClientInteraction`	2.4 KiB	8.6 KiB
⚪	`agents/chat#pausedExecutionUpdate`	2.4 KiB	8.4 KiB
⚪	`agents/chat#pendingChatTerminal`	2.3 KiB	8.3 KiB
⚪	`agents/chat#persistReconstructedOrphan`	3.1 KiB	11.0 KiB
⚪	`agents/chat#PreStreamTurns`	2.6 KiB	9.3 KiB
⚪	`agents/chat#readChatRecoveryProgress`	2.3 KiB	8.3 KiB
⚪	`agents/chat#reconcileMessages`	2.8 KiB	9.6 KiB
⚪	`agents/chat#reconcileOrphanPartial`	2.4 KiB	8.5 KiB
⚪	`agents/chat#recordChatTerminal`	2.4 KiB	8.3 KiB
⚪	`agents/chat#repairInterruptedToolParts`	2.6 KiB	9.1 KiB
⚪	`agents/chat#resolveChatRecoveryConfig`	2.6 KiB	8.9 KiB
⚪	`agents/chat#resolveToolMergeId`	2.4 KiB	8.5 KiB
⚪	`agents/chat#ResumableStream`	5.2 KiB	17.3 KiB
⚪	`agents/chat#ResumeHandshake`	3.0 KiB	10.4 KiB
⚪	`agents/chat#ROW_MAX_BYTES`	2.3 KiB	8.2 KiB
⚪	`agents/chat#runChatRecoveryExhaustion`	2.6 KiB	8.9 KiB
⚪	`agents/chat#sanitizeMessage`	2.5 KiB	8.8 KiB
⚪	`agents/chat#sendIfOpen`	2.4 KiB	8.4 KiB
⚪	`agents/chat#setChatRecovering`	2.5 KiB	8.5 KiB
⚪	`agents/chat#shouldCreditStreamProgress`	2.4 KiB	8.3 KiB
⚪	`agents/chat#STREAM_RESUME_NONE_REASONS`	2.3 KiB	8.2 KiB
⚪	`agents/chat#StreamAccumulator`	2.9 KiB	10.7 KiB
⚪	`agents/chat#StreamProgressCreditThrottle`	2.4 KiB	8.3 KiB
⚪	`agents/chat#SubmitConcurrencyController`	2.9 KiB	10.3 KiB
⚪	`agents/chat#sweepStaleChatRecoveryIncidents`	2.4 KiB	8.5 KiB
⚪	`agents/chat#TextSegmentJoiner`	2.7 KiB	9.2 KiB
⚪	`agents/chat#TIMED_OUT`	2.3 KiB	8.2 KiB
⚪	`agents/chat#toolApprovalUpdate`	2.4 KiB	8.5 KiB
⚪	`agents/chat#toolPartHasSettledResult`	2.3 KiB	8.4 KiB
⚪	`agents/chat#toolResultUpdate`	2.4 KiB	8.5 KiB
⚪	`agents/chat#truncateOlderMessages`	3.2 KiB	10.5 KiB
⚪	`agents/chat#truncateOlderToolResults`	3.3 KiB	10.9 KiB
⚪	`agents/chat#TurnQueue`	2.6 KiB	9.2 KiB
⚪	`agents/chat#unwrapChatFiberSnapshot`	2.4 KiB	8.5 KiB
⚪	`agents/chat#wrapChatFiberSnapshot`	2.3 KiB	8.2 KiB
⚪	`agents/chat-sdk#ChatSdkStateAdapter`	263.5 KiB	1152.6 KiB
⚪	`agents/chat-sdk#ChatSdkStateAgent`	262.8 KiB	1150.0 KiB
⚪	`agents/chat-sdk#createChatSdkState`	263.5 KiB	1152.6 KiB
⚪	`agents/chat-sdk#defaultKeyShard`	261.2 KiB	1141.2 KiB
⚪	`agents/chat-sdk#defaultThreadShard`	261.1 KiB	1141.0 KiB
⚪	`agents/chat/react#detectToolsRequiringConfirmation`	3.3 KiB	8.3 KiB
⚪	`agents/chat/react#extractClientToolSchemas`	3.2 KiB	8.3 KiB
⚪	`agents/chat/react#getAgentMessages`	3.4 KiB	8.6 KiB
⚪	`agents/chat/react#getToolApproval`	3.1 KiB	8.0 KiB
⚪	`agents/chat/react#getToolCallId`	3.1 KiB	8.0 KiB
⚪	`agents/chat/react#getToolInput`	3.1 KiB	8.0 KiB
⚪	`agents/chat/react#getToolOutput`	3.1 KiB	8.0 KiB
⚪	`agents/chat/react#getToolPartState`	3.2 KiB	8.2 KiB
🟡	`agents/chat/react#useAgentChat`	133.6 KiB	612.0 KiB
🟡	`agents/chat/react#WebSocketChatTransport`	6.2 KiB	18.8 KiB
🟡	`agents/chat/transport#WebSocketChatTransport`	3.3 KiB	10.8 KiB
⚪	`agents/client#AgentClient`	21.8 KiB	75.2 KiB
⚪	`agents/client#AgentConnectionError`	16.3 KiB	57.8 KiB
⚪	`agents/client#agentFetch`	19.7 KiB	69.0 KiB
⚪	`agents/client#createStubProxy`	16.4 KiB	57.8 KiB
⚪	`agents/client#DEFAULT_CALL_TIMEOUT_MS`	16.2 KiB	57.6 KiB
⚪	`agents/client#isTerminalCloseEvent`	16.3 KiB	57.6 KiB
⚪	`agents/client#nativeCall`	16.5 KiB	58.3 KiB
⚪	`agents/client#NativeCallQueue`	16.7 KiB	58.9 KiB
⚪	`agents/client#splitCallOptions`	16.3 KiB	57.7 KiB
⚪	`agents/context#AgentContextProvider`	412 B	792 B
⚪	`agents/context#AgentSearchProvider`	640 B	1.3 KiB
⚪	`agents/context#ContextBlocks`	87.4 KiB	429.7 KiB
⚪	`agents/email#createAddressBasedEmailResolver`	193 B	227 B
⚪	`agents/email#createCatchAllEmailResolver`	110 B	97 B
⚪	`agents/email#createHeaderBasedEmailResolver`	334 B	492 B
⚪	`agents/email#createSecureReplyEmailResolver`	718 B	1.3 KiB
⚪	`agents/email#DEFAULT_MAX_AGE_SECONDS`	56 B	39 B
⚪	`agents/email#isAutoReplyEmail`	201 B	249 B
⚪	`agents/email#signAgentHeaders`	424 B	812 B
⚪	`agents/experimental/webmcp#registerWebMcp`	85.2 KiB	295.8 KiB
⚪	`agents/lifecycle#getCurrentAgent`	376 B	798 B
⚪	`agents/lifecycle#Lifecycle`	8.4 KiB	26.1 KiB
⚪	`agents/lifecycle#LifecycleCapability`	497 B	999 B
⚪	`agents/mcp#createLegacyMcpHandler`	378.6 KiB	1583.3 KiB
⚪	`agents/mcp#createMcpHandler`	390.9 KiB	1628.5 KiB
⚪	`agents/mcp#DurableObjectEventStore`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#ElicitRequestSchema`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#experimental_createMcpHandler`	378.7 KiB	1583.6 KiB
⚪	`agents/mcp#getMcpAuthContext`	345.1 KiB	1441.9 KiB
⚪	`agents/mcp#MCP_SERVER_ID_MAX_LENGTH`	345.1 KiB	1441.9 KiB
⚪	`agents/mcp#McpAgent`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#normalizeServerId`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#RPC_DO_PREFIX`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#RPCClientTransport`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#RPCServerTransport`	345.1 KiB	1441.8 KiB
⚪	`agents/mcp#SSEEdgeClientTransport`	345.2 KiB	1442.1 KiB
⚪	`agents/mcp#StreamableHTTPEdgeClientTransport`	345.2 KiB	1442.1 KiB
⚪	`agents/mcp#WorkerTransport`	348.5 KiB	1458.7 KiB
⚪	`agents/mcp/client#getNamespacedData`	62.9 KiB	240.0 KiB
⚪	`agents/mcp/client#MCP_SERVER_ID_MAX_LENGTH`	62.9 KiB	239.9 KiB
⚪	`agents/mcp/client#MCPClientManager`	158.6 KiB	702.6 KiB
⚪	`agents/mcp/client#normalizeServerId`	63.0 KiB	240.2 KiB
⚪	`agents/mcp/do-oauth-client-provider#DurableObjectOAuthClientProvider`	2.1 KiB	6.6 KiB
⚪	`agents/mcp/server#createMcpHandler`	80.5 KiB	307.2 KiB
⚪	`agents/mcp/server#getMcpAuthContext`	64.0 KiB	245.5 KiB
⚪	`agents/observability#channels`	259 B	549 B
⚪	`agents/observability#genericObservability`	470 B	1.2 KiB
⚪	`agents/observability#subscribe`	324 B	668 B
⚪	`agents/observability/ai#wrapAISDK`	8.8 KiB	30.5 KiB
⚪	`agents/queue#Queue`	3.1 KiB	9.6 KiB
⚪	`agents/react#_testUtils`	19.3 KiB	66.4 KiB
⚪	`agents/react#useAgent`	27.1 KiB	89.9 KiB
⚪	`agents/react#useAgentToolEvents`	21.1 KiB	73.7 KiB
⚪	`agents/routing#getAgentByName`	795 B	1.7 KiB
⚪	`agents/routing#routeAgentRequest`	1.6 KiB	3.6 KiB
⚪	`agents/routing#RoutedAgents`	2.4 KiB	6.2 KiB
⚪	`agents/schedule#getSchedulePrompt`	85.8 KiB	424.7 KiB
⚪	`agents/schedule#scheduleSchema`	85.3 KiB	423.6 KiB
⚪	`agents/schedule#unstable_getSchedulePrompt`	85.9 KiB	424.9 KiB
⚪	`agents/schedule#unstable_scheduleSchema`	85.3 KiB	423.6 KiB
⚪	`agents/schedules#Scheduler`	6.8 KiB	22.0 KiB
⚪	`agents/schedules/parser#getSchedulePrompt`	85.8 KiB	424.7 KiB
⚪	`agents/schedules/parser#scheduleSchema`	85.3 KiB	423.6 KiB
⚪	`agents/sessions#COMPACTION_PREFIX`	147 B	160 B
⚪	`agents/sessions#createCompactFunction`	1.7 KiB	4.0 KiB
⚪	`agents/sessions#isCompactionMessage`	177 B	200 B
⚪	`agents/sessions#Session`	2.0 KiB	6.3 KiB
⚪	`agents/sessions#Sessions`	9.6 KiB	34.3 KiB
⚪	`agents/skills#fromManifest`	309.8 KiB	1084.0 KiB
⚪	`agents/skills#parseSkillFrontmatter`	328.4 KiB	1146.2 KiB
⚪	`agents/skills#parseSkillMarkdown`	328.6 KiB	1146.5 KiB
⚪	`agents/skills#r2`	330.2 KiB	1150.4 KiB
⚪	`agents/skills#runner`	369.0 KiB	1297.8 KiB
⚪	`agents/skills#SkillRegistry`	416.4 KiB	1581.7 KiB
⚪	`agents/skills/compile#compileSkillScript`	15.4 KiB	43.4 KiB
⚪	`agents/skills/compile#isCompilableSkillScript`	15.4 KiB	43.3 KiB
⚪	`agents/state#State`	1.1 KiB	2.4 KiB
⚪	`agents/streams#DEFAULT_MAX_CHUNK_BYTES`	94 B	96 B
⚪	`agents/streams#sseResponse`	857 B	1.6 KiB
⚪	`agents/streams#StreamClosedError`	175 B	212 B
⚪	`agents/streams#StreamNotFoundError`	215 B	276 B
⚪	`agents/streams#Streams`	4.3 KiB	13.9 KiB
⚪	`agents/streams#StreamSerializationError`	171 B	201 B
⚪	`agents/tasks#DuplicateTaskStepError`	328 B	463 B
⚪	`agents/tasks#MAX_SERIALIZED_BYTES`	190 B	232 B
⚪	`agents/tasks#MissingTaskDefinitionError`	358 B	536 B
⚪	`agents/tasks#NonRetryableError`	238 B	308 B
⚪	`agents/tasks#TaskReplayDivergedError`	341 B	483 B
⚪	`agents/tasks#Tasks`	8.9 KiB	31.8 KiB
⚪	`agents/tasks#TaskSerializationError`	258 B	339 B
⚪	`agents/types#MessageType`	211 B	365 B
⚪	`agents/vite#default`	353.8 KiB	1356.1 KiB
⚪	`agents/voice#addSFUTracks`	324 B	424 B
⚪	`agents/voice#createSFUSession`	255 B	306 B
⚪	`agents/voice#createSFUWebSocketAdapter`	331 B	429 B
⚪	`agents/voice#decodeVarint`	157 B	160 B
⚪	`agents/voice#downsample48kStereoTo16kMono`	238 B	324 B
⚪	`agents/voice#encodePayloadToProtobuf`	189 B	279 B
⚪	`agents/voice#encodeVarint`	129 B	122 B
⚪	`agents/voice#extractPayloadFromProtobuf`	271 B	425 B
⚪	`agents/voice#iterateText`	1.6 KiB	3.8 KiB
⚪	`agents/voice#renegotiateSFUSession`	329 B	428 B
⚪	`agents/voice#SentenceChunker`	550 B	1.1 KiB
⚪	`agents/voice#sfuFetch`	294 B	358 B
⚪	`agents/voice#upsample16kMonoTo48kStereo`	211 B	272 B
⚪	`agents/voice#VOICE_PROTOCOL_VERSION`	51 B	31 B
⚪	`agents/voice#withVoice`	9.5 KiB	32.7 KiB
⚪	`agents/voice#withVoiceInput`	4.8 KiB	16.0 KiB
⚪	`agents/voice#WorkersAIFluxSTT`	1.5 KiB	4.3 KiB
⚪	`agents/voice#WorkersAINova3STT`	1.6 KiB	4.3 KiB
⚪	`agents/voice#WorkersAITTS`	682 B	1.4 KiB
⚪	`agents/voice/client#VOICE_PROTOCOL_VERSION`	473 B	768 B
⚪	`agents/voice/client#VoiceClient`	10.1 KiB	31.6 KiB
⚪	`agents/voice/client#WebSocketVoiceTransport`	4.6 KiB	13.3 KiB
⚪	`agents/voice/errors#logVoiceError`	132 B	173 B
⚪	`agents/voice/errors#toVoiceError`	94 B	80 B
⚪	`agents/voice/errors#voiceErrorMessage`	125 B	111 B
⚪	`agents/voice/errors#VoiceProviderError`	190 B	345 B
⚪	`agents/voice/react#useVoiceAgent`	13.6 KiB	42.5 KiB
⚪	`agents/voice/react#useVoiceInput`	13.3 KiB	41.4 KiB
⚪	`agents/voice/react#WebSocketVoiceTransport`	7.4 KiB	21.3 KiB
⚪	`agents/voice/sfu#addSFUTracks`	323 B	424 B
⚪	`agents/voice/sfu#createSFUSession`	254 B	306 B
⚪	`agents/voice/sfu#createSFUWebSocketAdapter`	329 B	429 B
⚪	`agents/voice/sfu#decodeVarint`	155 B	160 B
⚪	`agents/voice/sfu#downsample48kStereoTo16kMono`	236 B	324 B
⚪	`agents/voice/sfu#encodePayloadToProtobuf`	188 B	279 B
⚪	`agents/voice/sfu#encodeVarint`	129 B	122 B
⚪	`agents/voice/sfu#extractPayloadFromProtobuf`	270 B	425 B
⚪	`agents/voice/sfu#renegotiateSFUSession`	329 B	428 B
⚪	`agents/voice/sfu#sfuFetch`	292 B	358 B
⚪	`agents/voice/sfu#upsample16kMonoTo48kStereo`	209 B	272 B
⚪	`agents/voice/text#iterateText`	1.6 KiB	3.8 KiB
⚪	`agents/voice/text#SentenceChunker`	549 B	1.1 KiB
⚪	`agents/voice/types#VOICE_PROTOCOL_VERSION`	51 B	31 B
⚪	`agents/voice/workers-ai#WorkersAIFluxSTT`	1.5 KiB	4.3 KiB
⚪	`agents/voice/workers-ai#WorkersAINova3STT`	1.6 KiB	4.3 KiB
⚪	`agents/voice/workers-ai#WorkersAITTS`	682 B	1.4 KiB
⚪	`agents/websockets#CAPNWEB_TRANSPORT_QUERY`	12.4 KiB	43.3 KiB
⚪	`agents/websockets#CAPNWEB_TRANSPORT_VALUE`	12.4 KiB	43.3 KiB
⚪	`agents/websockets#capnWebTransportUrl`	12.5 KiB	43.5 KiB
⚪	`agents/websockets#CF_NO_PROTOCOL_KEY`	12.4 KiB	43.3 KiB
⚪	`agents/websockets#CF_READONLY_KEY`	12.4 KiB	43.3 KiB
⚪	`agents/websockets#isCapnWebTransportUpgrade`	12.5 KiB	43.4 KiB
⚪	`agents/websockets#registerInternalConnectionKeys`	12.4 KiB	43.4 KiB
⚪	`agents/websockets#WebSockets`	20.0 KiB	69.3 KiB
⚪	`agents/workflows#AgentWorkflow`	262.4 KiB	1145.7 KiB
⚪	`agents/workflows#WorkflowRejectedError`	261.2 KiB	1141.2 KiB
⚪	`agents/x402#normalizeNetwork`	14.7 KiB	61.1 KiB
⚪	`agents/x402#withX402`	23.0 KiB	89.2 KiB
⚪	`agents/x402#withX402Client`	104.1 KiB	346.5 KiB

Reported by agent-think[bot].

pkg-pr-new · 2026-09-24T16:10:21Z

Open in StackBlitz

agents

npm i https://pkg.pr.new/agents@2361

@cloudflare/ai-chat

npm i https://pkg.pr.new/@cloudflare/ai-chat@2361

@cloudflare/codemode

npm i https://pkg.pr.new/@cloudflare/codemode@2361

hono-agents

npm i https://pkg.pr.new/hono-agents@2361

@cloudflare/shell

npm i https://pkg.pr.new/@cloudflare/shell@2361

@cloudflare/think

npm i https://pkg.pr.new/@cloudflare/think@2361

@cloudflare/voice

npm i https://pkg.pr.new/@cloudflare/voice@2361

@cloudflare/worker-bundler

npm i https://pkg.pr.new/@cloudflare/worker-bundler@2361

commit: 22dbebb

…on close Co-authored-by: Cursor <cursoragent@cursor.com>

…le or a local turn Co-authored-by: Cursor <cursoragent@cursor.com>

devin-ai-integration

Devin Review found 2 new potential issues.

devin-ai-integration · 2026-09-24T21:50:08Z


 When the LLM invokes `getLocation`, the stream pauses. The `onToolCall` callback fires, your code provides the output, and the conversation continues.

+`onToolCall` fires once the response stream ends, for each tool call that is still waiting for a result. A server tool runs and resolves in the same stream, so it never reaches `onToolCall`.


🔍 Sync documentation to the upstream site

The docs rule requires manually porting this change to the corresponding cloudflare-docs MDX page. Follow up on that separate update.

Was this helpful? React with 👍 or 👎 to provide feedback.

Docs here are ported to cloudflare-docs by hand. I will open the matching cloudflare-docs change once this lands; leaving this open until then.

…-turn Co-authored-by: Cursor <cursoragent@cursor.com>

…port - appliedChunks ledger: a continuation replayed after a reconnect skips the frames this client already applied, decided as each frame arrives and applied to the projected chunks so the projector still sees the whole run (cloudflare#1951, upstream cloudflare#2348) - a socket close before the terminal frame marks the stream interrupted, and the AI SDK transport ends it with an error chunk behind the unread chunks (cloudflare#2013, upstream cloudflare#2019) - activeServerTurnId getter for the hook's held-turn tracking (cloudflare#2361) - onBuffered / onRequestBuffered when the request frame was buffered, and a close while the body is still being prepared no longer drops the request (cloudflare#1983, upstream cloudflare#2039) - the chunk stream keeps pulling past events that render nothing, which stalled a waiting reader on RUN_STARTED followed by STEP_STARTED The two stack tests that pinned a clean close mid-stream now expect the error chunk, as upstream changed its own in cloudflare#2019.

Brings react-agui.tsx level with the legacy hook in agents/chat/react, which received these through the upstream merge: - cloudflare#2344 the server snapshot heals a diverged observed assistant - cloudflare#2348 an observer skips replayed continuation frames it already applied - cloudflare#2361 onToolCall fires only after the stream ends - cloudflare#2378 onTurnEnd fires once per ended request - cloudflare#2383 turns settle across replay, resume and observers (held and recovering requests, the resume:false idle probe) - cloudflare#2496 streaming protection is released when the socket closes - cloudflare#2394 follow the socket when the agent name changes - cloudflare#2403 the tool-result cleanup no longer dispatches per chunk - cloudflare#2039 keep an optimistic send the reconnect transcript omits The last three had no failing test: their upstream tests are ported into react-tests (the address-change one against a fake of useAgent's pending socket, since this package has no test worker) and failed before the fix. restoreBufferedSends, MAX_REMEMBERED_ENDED_TURNS and isSocketAddressPending are exported from agents/chat/react so the two hooks share them.

fix(agents): fire useAgentChat onToolCall only after the stream ends (#…

d8cd16b

…2195) Co-authored-by: Cursor <cursoragent@cursor.com>

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Hold onToolCall for an observed turn whose terminal frame was missed …

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…on close Co-authored-by: Cursor <cursoragent@cursor.com>

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Scope the observed-turn tool hold to its request and release it on id…

5206c51

…le or a local turn Co-authored-by: Cursor <cursoragent@cursor.com>

devin-ai-integration Bot reviewed Sep 24, 2026

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Hold onToolCall for this client's own turn when the socket closes mid…

22dbebb

…-turn Co-authored-by: Cursor <cursoragent@cursor.com>

threepointone merged commit 7588509 into main Sep 26, 2026
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threepointone deleted the fix/2195-on-tool-call-client-tools branch September 26, 2026 07:00

github-actions Bot mentioned this pull request Sep 25, 2026

Version Packages #2335

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threepointone mentioned this pull request Sep 27, 2026

fix(chat): settle turns correctly across replay, resume, and observers #2383

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fix(agents): fire useAgentChat onToolCall only after the stream ends - #2361

fix(agents): fire useAgentChat onToolCall only after the stream ends#2361
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		When the LLM invokes `getLocation`, the stream pauses. The `onToolCall` callback fires, your code provides the output, and the conversation continues.

		`onToolCall` fires once the response stream ends, for each tool call that is still waiting for a result. A server tool runs and resolves in the same stream, so it never reaches `onToolCall`.

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🟡 agents import sizes

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threepointone commented Sep 24, 2026 •

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