Backport #2730: fix(ai): continue DurableAgent tool loops

[github-actions]

Automated backport of #2730 to stable (backport job run).

AI recommendation: This is a self-contained bug fix to packages/ai/src/agent/stream-text-iterator.ts, which exists on stable with the exact same finishReason === 'tool-calls' code being patched. The fix does not depend on any main-only APIs and applies equally to stable.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8bf6572

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

This PR includes changesets to release 1 package

Name	Type
@workflow/ai	Patch

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[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jul 1, 2026 4:45pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jul 1, 2026 4:45pm
example-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-astro-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-express-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-fastify-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-hono-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-nitro-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workbench-vite-workflow	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jul 1, 2026 4:45pm
workflow-swc-playground	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workflow-tarballs	Ready	Preview, Comment	Jul 1, 2026 4:45pm
workflow-web	Ready	Preview, Comment	Jul 1, 2026 4:45pm

[github-actions]

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1077	0	78	1155
✅ 💻 Local Development	1174	0	86	1260
✅ 📦 Local Production	1174	0	86	1260
✅ 🐘 Local Postgres	1162	0	98	1260
✅ 🪟 Windows	105	0	0	105
❌ 🌍 Community Worlds	79	102	9	190
✅ 📋 Other	592	0	38	630
Total	5363	102	395	5860

❌ Failed Tests

🌍 Community Worlds (102 failed)

redis (19 failed):

• hookWorkflow | wrun_01KWFEHSXES9DE84YNKD31P06Z
• hookWorkflow is not resumable via public webhook endpoint | wrun_01KWFEJ2MT8Y0E637J7SYXNE77
• parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01KWFEJEP2B5V2TQGYDN1QMNPS
• sleepingWorkflow | wrun_01KWFEKEGZ05MH5V5HHTR99WDN
• outputStreamWorkflow negative startIndex (reads from end)
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
• outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
• concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KWFEVFSGCD4XSZDCNE5R195K
• hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01KWFEVX912NDZFKZVTHKFADM0
• hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01KWFEW5KBB6M49K3B7VTPFD7H
• hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01KWFEWKWC6T4VPDG85E1QQ9QZ
• hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01KWFEXGCA639FMW8C7XCWABBN
• hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01KWFEXN528XXW1GK42J99ZVPP
• hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01KWFEXV2H8G91S5VSYNNPWJA9
• hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01KWFEXZC40ATVCCKR1VAYBBY3
• resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01KWFEY9C5ZQQK0GG31Z25RPYE
• pages router sleepingWorkflow via pages router
• resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KWFF47TFYRE7F47HKN7H2K1P

turso (83 failed):

• addTenWorkflow | wrun_01KWFEGSGBN12SR1BC4NAWQJCD
• addTenWorkflow | wrun_01KWFEGSGBN12SR1BC4NAWQJCD
• deploymentId: 'latest' is a no-op in non-Vercel worlds
• wellKnownAgentWorkflow (.well-known/agent) | wrun_01KWFEHMMRDD8YZEZN59RCCZCQ
• should work with react rendering in step
• promiseAllWorkflow | wrun_01KWFEH16NS89GJ54WMC8C1VX5
• promiseRaceWorkflow | wrun_01KWFEH7CQ7V660YT57D01Y8B3
• promiseAnyWorkflow | wrun_01KWFEH9WYN6PJMHTXAT3G5KS7
• importedStepOnlyWorkflow | wrun_01KWFEHXK01WAB1ABJHT2W01TB
• readableStreamWorkflow | wrun_01KWFEHDDTR5DN76S65C1AW845
• hookWorkflow | wrun_01KWFEHSXES9DE84YNKD31P06Z
• hookWorkflow is not resumable via public webhook endpoint | wrun_01KWFEJ2MT8Y0E637J7SYXNE77
• webhookWorkflow | wrun_01KWFEJ819HVHX045NE91XWEBW
• parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01KWFEJEP2B5V2TQGYDN1QMNPS
• sleepingWorkflow | wrun_01KWFEKEGZ05MH5V5HHTR99WDN
• parallelSleepWorkflow | wrun_01KWFEKYSK38T5QAQW6PKP09ZC
• sleepWinsRaceWorkflow | wrun_01KWFEM2DF4NYSZY3PRY1SA1XE
• stepWinsRaceWorkflow | wrun_01KWFEM61JYSKB4V0D0A38DGCN
• nullByteWorkflow | wrun_01KWFEM9R6K4CA9P2RY4STVF37
• workflowAndStepMetadataWorkflow | wrun_01KWFEMCAN2NE8CDF19CE60VXM
• outputStreamWorkflow no startIndex (reads all chunks)
• outputStreamWorkflow positive startIndex (skips first chunk)
• outputStreamWorkflow negative startIndex (reads from end)
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
• outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
• outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01KWFEPRW7DN5HS7CCGHYM6F6G
• writableForwardedFromWorkflowWorkflow | wrun_01KWFEQ6DV5R8N68K9XQW07BYQ
• writableForwardedFromStepWorkflow | wrun_01KWFEQB114WC2QNWP4SYT1JRE
• fetchWorkflow | wrun_01KWFEQDPPETF3PHN53QQMFR6W
• promiseRaceStressTestWorkflow | wrun_01KWFEQHBGNB9P0V15T90F8HX7
• error handling error propagation workflow errors nested function calls preserve message and stack trace
• error handling error propagation workflow errors cross-file imports preserve message and stack trace
• error handling error propagation step errors basic step error preserves message and stack trace
• error handling error propagation step errors cross-file step error preserves message and function names in stack
• error handling retry behavior regular Error retries until success
• error handling retry behavior FatalError fails immediately without retries
• error handling retry behavior RetryableError respects custom retryAfter delay
• error handling retry behavior maxRetries=0 disables retries
• error handling catchability FatalError can be caught and detected with FatalError.is()
• error handling not registered WorkflowNotRegisteredError fails the run when workflow does not exist
• error handling not registered StepNotRegisteredError fails the step but workflow can catch it
• error handling not registered StepNotRegisteredError fails the run when not caught in workflow
• hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_01KWFEV1G6WWA6MBY6DZ49QTVC
• concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KWFEVFSGCD4XSZDCNE5R195K
• hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01KWFEVX912NDZFKZVTHKFADM0
• 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01KWFEW05YWTFAQMMEJ0H01MK9
• 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01KWFEW2Y2DQ6Q2GWHR6F3XSTS
• hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01KWFEW5KBB6M49K3B7VTPFD7H
• hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01KWFEWKWC6T4VPDG85E1QQ9QZ
• hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01KWFEXGCA639FMW8C7XCWABBN
• hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01KWFEXN528XXW1GK42J99ZVPP
• hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01KWFEXV2H8G91S5VSYNNPWJA9
• hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01KWFEXZC40ATVCCKR1VAYBBY3
• resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01KWFEY9C5ZQQK0GG31Z25RPYE
• hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01KWFEYG5ARF0C4X0GV6VH5CKN
• stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01KWFEZ0SCJ7J7Q956T20X39F9
• stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01KWFEZAVCXF4NXDZX03P2MYVP
• closureVariableWorkflow - nested step functions with closure variables | wrun_01KWFEZH3Q3ZVSW4130Z7NMQSE
• spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01KWFEZKHNKMT2KSGZMZWAWKV3
• health check (queue-based) - workflow and step endpoints respond to health check messages
• health check (CLI) - workflow health command reports healthy endpoints
• pathsAliasWorkflow - TypeScript path aliases resolve correctly | wrun_01KWFF03EM23WH6VR1XXVC399F
• Calculator.calculate - static workflow method using static step methods from another class | wrun_01KWFF09XT6ZYRG9N7K2BZ6F9W
• AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01KWFF0H8HFXED2SRCVA42Y8Y6
• ChainableService.processWithThis - static step methods using this to reference the class | wrun_01KWFF0QPW5R2D7MR7H22EW1AD
• thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01KWFF0ZXF118N8FNJBAX9JDR4
• customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01KWFF17BVJZ7SY2MNYY82DKJA
• instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01KWFF1ES0DH4AYWY6WNXHPE4Q
• crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01KWFF1W2NES36ZYF9Z0182KRA
• stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01KWFF24WYYGBQE96HCKPKRK03
• cancelRun - cancelling a running workflow | wrun_01KWFF2CGPVRG0B0EQNSYRS6EH
• cancelRun via CLI - cancelling a running workflow | wrun_01KWFF2HPXEH4KN3FC81P2E210
• pages router addTenWorkflow via pages router
• pages router promiseAllWorkflow via pages router
• pages router sleepingWorkflow via pages router
• hookWithSleepWorkflow - hook payloads delivered correctly with concurrent sleep | wrun_01KWFF2T6ZMHE8BRMDY8MH9RED
• hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01KWFF36VA3GPV8Y3BA0VX753W
• sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01KWFF3GE7GJSM6JNX152HPSXK
• sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01KWFF3VFQ0YZ5E85QXC82SJ6R
• importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01KWFF42XJTN05ECWKGD2CZVVV
• metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01KWFF45AK4FRSDH956GVWD18H
• resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KWFF47TFYRE7F47HKN7H2K1P

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	97	0	8
✅ example	97	0	8
✅ express	97	0	8
✅ fastify	97	0	8
✅ hono	97	0	8
✅ nextjs-turbopack	102	0	3
✅ nextjs-webpack	102	0	3
✅ nitro	97	0	8
✅ nuxt	97	0	8
✅ sveltekit	97	0	8
✅ vite	97	0	8

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	99	0	6
✅ express-stable	99	0	6
✅ fastify-stable	99	0	6
✅ hono-stable	99	0	6
✅ nextjs-turbopack-canary	86	0	19
✅ nextjs-turbopack-stable	105	0	0
✅ nextjs-webpack-canary	86	0	19
✅ nextjs-webpack-stable	105	0	0
✅ nitro-stable	99	0	6
✅ nuxt-stable	99	0	6
✅ sveltekit-stable	99	0	6
✅ vite-stable	99	0	6

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	99	0	6
✅ express-stable	99	0	6
✅ fastify-stable	99	0	6
✅ hono-stable	99	0	6
✅ nextjs-turbopack-canary	86	0	19
✅ nextjs-turbopack-stable	105	0	0
✅ nextjs-webpack-canary	86	0	19
✅ nextjs-webpack-stable	105	0	0
✅ nitro-stable	99	0	6
✅ nuxt-stable	99	0	6
✅ sveltekit-stable	99	0	6
✅ vite-stable	99	0	6

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	98	0	7
✅ express-stable	98	0	7
✅ fastify-stable	98	0	7
✅ hono-stable	98	0	7
✅ nextjs-turbopack-canary	85	0	20
✅ nextjs-turbopack-stable	104	0	1
✅ nextjs-webpack-canary	85	0	20
✅ nextjs-webpack-stable	104	0	1
✅ nitro-stable	98	0	7
✅ nuxt-stable	98	0	7
✅ sveltekit-stable	98	0	7
✅ vite-stable	98	0	7

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	105	0	0

❌ 🌍 Community Worlds

App	Passed	Failed	Skipped
✅ mongodb-dev	3	0	3
✅ redis-dev	3	0	3
❌ redis	67	19	0
✅ turso-dev	3	0	3
❌ turso	3	83	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	99	0	6
✅ e2e-local-dev-tanstack-start-stable	99	0	6
✅ e2e-local-postgres-nest-stable	98	0	7
✅ e2e-local-postgres-tanstack-start-stable	98	0	7
✅ e2e-local-prod-nest-stable	99	0	6
✅ e2e-local-prod-tanstack-start-stable	99	0	6

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📋 View full workflow run