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eve

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Filesystem-first framework for durable backend AI agents that run anywhere.

github.com/vercel/eve

vercel/eve

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import{ToolLoopAgent,isStepCount}from"ai";import{readClientContext}from"#internal/client-context.js";import{createErrorId,createLogger,formatError,logError}from"#internal/logging.js";import{contextStorage}from"#context/container.js";import{AuthKey,HistoryStateKey,ParentSessionKey,ScheduleIdKey,SessionCallbackKey,StaticModelReferenceKey,TaskDeliveryPolicyKey,TurnTaskDeliveryKey}from"#context/keys.js";import{resolveInstalledPackageInfo}from"#internal/application/package.js";import{toErrorMessage}from"#shared/errors.js";import{createActionResultEvent,createApprovalCandidateEvent,createApprovalSettledEvent,createAuthorizationCompletedEvent,createAuthorizationRequiredEvent,createCompactionCompletedEvent,createCompactionRequestedEvent,createContextClearedEvent,createInputRequestedEvent,createInputResolvedEvent,createMessageCompletedEvent,createResultCompletedEvent,createSessionWaitingEvent,createStepStartedEvent}from"#protocol/message.js";import{summarizeKnownError}from"#harness/semantic-errors/index.js";import{resolveProviderHeaders}from"#internal/gateway.js";import{formatLanguageModelGatewayId}from"#internal/runtime-model.js";import{createFrameworkUserMessage,createTurnInputMessages,createUserMessage,frameworkMessageKindForStepInput,normalizeModelMessages,normalizeUserContent,resolveAssistantStepText,validateHarnessModelMessages}from"#harness/messages.js";import{getEffectiveModelSelection}from"#context/effective-model.js";import{buildDynamicTools,buildResponseAuthorizationTools}from"#context/build-dynamic-tools.js";import{BoundaryHookError}from"#shared/boundary-hook-error.js";import{drainMemoryCommit,prepareMemoryCompaction,prepareMemoryPreamble}from"#context/memory-lifecycle.js";import{canonicalizeMemoryRecords,clearMemorySessionState,shouldCanonicalizeMemory}from"#shared/memory-state.js";import{advanceStep,emitFailedStep,emitRecoverableFailedTurn,emitStepStarted,emitStreamContent,emitTurnEpilogue,emitTurnPreamble,getHarnessEmissionState,isHarnessBetweenTurns,setHarnessEmissionState}from"#harness/emission.js";import{projectParkedAgentHandles,resolveAgentsAnnouncement}from"#subagents/handles/prompt.js";import{renderPendingApprovalsInstruction,renderPendingApprovalsSnippet}from"#harness/hitl/approval-prompt.js";import{setTimeout}from"node:timers/promises";import{getPendingInputBatches,queueDeferredStepInput}from"#harness/pending-input-batches.js";import{createCoordinationRequestFromToolCall,getPendingCoordinationBatch,resolvePendingCoordination,setPendingCoordinationBatch}from"#harness/coordination.js";import{getAgentHandleStore}from"#subagents/handles/store.js";import{buildDynamicSubagentTools}from"#context/dynamic-subagent-lifecycle.js";import{hydrateSandboxAttachments,stageAttachmentsToSandbox}from"#harness/attachment-staging.js";import{activeTurnId}from"#harness/active-turn-id.js";import{createHistoryViewPreparer}from"#shared/history-view.js";import{isDynamicModelSelectionError}from"#context/dynamic-model-lifecycle.js";import{buildDynamicInstructionMessages,drainDynamicInstructionUserMessages,prepareDynamicInstructionPreamble}from"#context/dynamic-instruction-lifecycle.js";import{PendingSkillAnnouncementKey}from"#context/dynamic-skill-lifecycle.js";import{getSupersededAuthorizationChallenges,setPendingAuthorization}from"#harness/authorization.js";import{appendPendingInputBatch,consumeDeferredStepInput as consumeDeferredStepInput$1,getApprovedTools,getPendingInputRequestIds,hasPendingApprovalBatch,hasRunnableDeferredStepInput,hasStepInput,resolvePendingInput}from"#harness/input-requests.js";import{accumulateTurnUsage,getTurnUsageState,setTurnUsageState}from"#harness/turn-tag-state.js";import{setEveAttributes}from"#runtime/attributes/emit.js";import{isTurnCancellation,throwIfTurnAborted}from"#harness/turn-cancellation.js";import{resolveInitiatingTaskContext}from"#tasks/delivery-context.js";import{BackgroundToolExecutorKey,createBackgroundToolCallBatch}from"#harness/background-tools.js";import{createToolResultMessagePartFromToolError}from"#harness/action-result-helpers.js";import{getApprovalAuditState,markApprovalCandidateHistoryEventEmitted,markApprovalCandidatePendingEventEmitted,markApprovalSettlementEventEmitted}from"#harness/approval-candidates.js";import{estimateTokens}from"#harness/token-estimate.js";import{clearTurnClientContextState,getTurnClientContextState,setTurnClientContextState}from"#harness/turn-client-context.js";import{EMPTY_DELIVERY_SENTINEL,hasEmptyDeliverySentinel}from"#shared/empty-delivery.js";import{getInvalidToolCallInputError,isInvalidToolCall}from"#harness/tool-call-input-errors.js";import{ContentFilteredModelResponseError,EmptyModelResponseError,classifyModelCallError,extractModelCallErrorDetails,extractUnsupportedProviderToolTypes,extractUpstreamRejectionMessage,isNoOutputGeneratedError}from"#harness/model-call-error.js";import{interruptStreamOnFailure}from"#harness/interruptible-stream.js";import{resolveInlineAuthorizationInterrupt}from"#harness/inline-tool-authorization.js";import{createCurrentMessages}from"#harness/current-messages.js";import{extractToolApprovalInputRequests}from"#harness/input-extraction.js";import{applyLastToolCacheBreakpoint,applySystemCacheBreakpoint,detectPromptCachePath,getAnthropicCacheMarker}from"#harness/prompt-cache.js";import{mergeProviderSafetyIdentifier}from"#harness/provider-safety.js";import{requireSessionModelReference}from"#harness/types.js";import{GenerationSteering}from"#harness/generation-steering.js";import{estimateRequestEnvelope,getRequestEnvelopeTokens,setRequestEnvelopeTokens}from"#harness/request-envelope.js";import{compactMessages,getInputTokenCount,resolveCompactionModel,shouldCompact}from"#harness/compaction.js";import{applySessionLimitContinuation,enforceSessionUsageLimit}from"#harness/session-limit-enforcement.js";import{coordinateApprovalDelivery,shouldPrepareApprovalReplayTools}from"#harness/approval-delivery-coordinator.js";import{convertStaleResponsesToUserMessage,dropStaleSessionLimitContinuationResponses}from"#harness/stale-input-responses.js";import{normalizeProviderToolHistory}from"#harness/provider-tool-history.js";import{resolveDeliveryPolicy}from"#tasks/delivery-policy.js";import{extractWorkflowStreamWriteErrorDetails}from"#harness/workflow-stream-error.js";import{getAdvertisedTools}from"#harness/advertised-tools.js";import{resolveFrameworkToolFromUpstreamType}from"#harness/provider-tools.js";import{buildStepHooks,emitStepActions,readGatewayGenerationId}from"#harness/step-hooks.js";import{buildToolApproval,buildToolSetFromDefinitions,buildToolSetWithProviderTools}from"#harness/tools.js";import{FINAL_OUTPUT_TOOL_NAME,buildFinalOutputTool}from"#harness/final-output.js";const environment=process.env.NODE_ENV??`unknown`,eveVersion=resolveInstalledPackageInfo().version,log=createLogger(`harness.tool-loop`);function logToolExecutionError(e){e.toolOutput.type===`tool-error`&&logError(log,`tool execution failed`,e.toolOutput.error,{toolName:e.toolCall.toolName,toolCallId:e.toolCall.toolCallId})}function mergeSystemInstructions(e){if(e.length===0)return;if(e.length===1)return{...e[0]};let t;for(let n of e)n.providerOptions!==void 0&&(t={...t,...n.providerOptions});let n={role:`system`,content:e.map(e=>e.content).join(` `)};return t!==void 0&&(n.providerOptions=t),n}function buildGatewayAttributionHeaders(e,t){let n=resolveProviderHeaders(e);if(n===void 0)return;let r=t?.agentName??t?.agentId,i=process.env.VERCEL_PROJECT_PRODUCTION_URL||process.env.VERCEL_URL,a=i?`https://${i}`:void 0,o={...n};return r&&(o[`x-title`]=r),a&&(o[`http-referer`]=a),o}async function resolveEffectiveRuntimeModel(e){if(e.ctx===void 0){let t=e.session.agent.modelReference;if(t===void 0)throw Error(`Dynamic model selection is unavailable outside an eve runtime context.`);return{model:await e.config.resolveModel(t),session:e.session}}let t=getEffectiveModelSelection(e.ctx);if(t===null)throw Error(`Dynamic model selection is required before model-dependent work begins. Add a matching resolver handler that returns a concrete model.`);return{model:t.model===void 0?await e.config.resolveModel(t.reference):t.model,session:updateSessionModelReference(e.session,t.reference)}}function updateSessionModelReference(e,t){return e.agent.modelReference===t?e:{...e,agent:{...e.agent,modelReference:t},compaction:updateCompactionThresholdForModelReference({compaction:e.compaction,modelReference:t})}}function updateCompactionThresholdForModelReference(e){return e.modelReference.contextWindowTokens===void 0?e.compaction:{...e.compaction,threshold:Math.max(1,Math.floor(e.modelReference.contextWindowTokens*(e.compaction.thresholdPercent??.9)))}}function buildHarnessToolsWithDynamicSubagents(e,t){let n=new Map(e);if(t===void 0)return n;for(let e of buildDynamicSubagentTools(t)){if(n.has(e.name))throw Error(`Dynamic subagent "${e.name}" collides with another runtime-visible tool name.`);n.set(e.name,e)}return n}function createToolLoopHarness(e){e.instrumentation?.installAiSdkWarningLogger();let t=e.handleEvent;async function runStep(t,n){let executeStep=async r=>{let i=r?.session??t,a=new GenerationSteering({abortSignal:e.abortSignal,steeringSignal:e.steeringSignal,outputStarted:getHarnessEmissionState(i.state).assistantOutputStarted});try{return await executeStepBody(i,a,n,r)}finally{a.dispose()}};return e.instrumentation?.runStep({environment,eveVersion,hasInput:hasStepInput(n),session:t},executeStep)??executeStep()}async function executeStepBody(n,r,i,a){let o=n,s=createHistoryViewPreparer({previous:e.historyView,projector:e.historyProjector});s(o.history,o.state);let projectHistory=(e,t)=>s(e,t).messages,c=getHarnessEmissionState(o.state),l=contextStorage.getStore();l!==void 0&&!l.has(StaticModelReferenceKey)&&l.setVirtualContext(StaticModelReferenceKey,o.agent.dynamicModel===!0?null:o.agent.modelReference??null);let u=l?.get(ParentSessionKey),d=l?.get(SessionCallbackKey),f=u!==void 0||d!==void 0,p,m=a?.createHandleEvent({getAttemptScope:()=>p,handleEvent:t,turnId:activeTurnId(c)})??t,h=m===void 0?void 0:async(e,t)=>{r.beforeEvent(e),await m(e,t)},failModelSelection=async(t,n)=>{if(throwIfTurnAborted(e.abortSignal),a?.recordError(t),!h)throw t;let r=createErrorId(),i=toErrorMessage(t);return log.error(`model selection failed terminally`,{error:t,errorId:r,sessionId:o.sessionId,turnId:n.turnId}),await emitFailedStep(h,n,{code:`MODEL_SELECTION_FAILED`,details:{errorId:r},message:i,sessionId:o.sessionId}),{next:e.mode===`task`||f?{done:!0,isError:!0,output:i}:{done:!0,output:``},session:o}},failBoundaryEvent=async(t,n)=>{if(throwIfTurnAborted(e.abortSignal),isTurnCancellation(t))throw t;if(isDynamicModelSelectionError(t))return failModelSelection(t,n);if(!h||e.mode!==`conversation`||!(t instanceof BoundaryHookError))throw t;a?.recordError(t);let r=createErrorId(),i=toErrorMessage(t);return log.error(`turn boundary handler failed — parking session`,{error:t,errorId:r,sessionId:o.sessionId,turnId:n.turnId}),c=await emitRecoverableFailedTurn(h,n,{code:`EVENT_HANDLER_FAILED`,continuationToken:o.continuationToken,details:{errorId:r},message:i}),{next:null,session:setHarnessEmissionState({...o,outputSchema:void 0},c),settledTurn:{isError:!0,output:i}}},preparePreambleTrace=async()=>await a?.preparePreamble({sequence:c.sequence,sessionStarted:c.sessionStarted,traceContext:a?.traceContext,turnId:activeTurnId(c)});if(e.clearOnly===!0)return o={...o,state:clearMemorySessionState(o.state)},o=replaceSessionHistory(o,[]),await h?.(createContextClearedEvent({sequence:c.sequence,sessionId:o.sessionId,turnId:activeTurnId(c)})),await h?.(createSessionWaitingEvent()),{next:null,session:o};if(e.compactOnly===!0){if(o.history.length>0)try{let t=contextStorage.getStore(),n=await resolveEffectiveRuntimeModel({config:e,ctx:t,session:o});o=n.session,o=(await maybeCompact({abortSignal:e.abortSignal,auth:t?.get(AuthKey)??null,emit:h,emissionState:{...c,turnId:activeTurnId(c)},force:!0,historyProjector:e.historyProjector,messages:[...o.history],model:n.model,requestEnvelopeTokens:getRequestEnvelopeTokens(o),resolveModel:e.resolveModel,runtimeIdentity:e.runtimeIdentity,session:o,telemetry:a?.telemetry()})).session}catch(e){logError(log,`manual session compaction failed`,e,{sessionId:o.sessionId})}return await h?.(createSessionWaitingEvent()),{next:null,session:o}}let g=consumeDeferredStepInput$1({input:i,preferCurrentInput:e.mode!==`conversation`&&i!==void 0&&hasPendingApprovalBatch(o),session:o});o=g.session;let _=getPendingCoordinationBatch(o.state),v=await resolvePendingCoordination({emit:h,session:o,stepInput:g.input,tools:e.tools});if(v.outcome===`unresolved`)return{next:null,session:v.session};o=v.session;let y=getPendingInputRequestIds(o.state),b=convertStaleResponsesToUserMessage({history:v.messages,pendingRequestIds:y,stepInput:dropStaleSessionLimitContinuationResponses({pendingRequestIds:y,stepInput:g.input})}),x=b.stepInput,S=b.kind===`converted`?{...x,message:b.displayMessage}:x,C=contextStorage.getStore();C!==void 0&&e.resolveStepDynamicTools!==void 0&&shouldPrepareApprovalReplayTools({session:o,stepInput:x})&&await e.resolveStepDynamicTools({ctx:C,event:createStepStartedEvent({modelId:o.agent.modelReference?.id??`dynamic`,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId}),messages:projectHistory(v.messages,o.state)});let w=shouldPrepareApprovalReplayTools({session:o,stepInput:x})?buildResponseAuthorizationTools({authoredTools:e.tools,context:C}):e.tools,T=await coordinateApprovalDelivery({session:o,stepInput:x,tools:w});if(o=T.session,h){for(let e of T.feedback)await h(createMessageCompletedEvent({message:e,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId}));let e=getApprovalAuditState(o.state);for(let t of e.activeCandidates.filter(e=>e.pendingEventEmitted!==!0))await h(createApprovalCandidateEvent({candidateId:t.candidateId,outcome:`pending`,requestId:t.requestId,responderPrincipalId:t.responder.principalId,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId})),o={...o,state:markApprovalCandidatePendingEventEmitted({candidateId:t.candidateId,state:o.state})};for(let t of e.candidateHistory.filter(e=>e.eventEmitted!==!0&&e.status!==`allowed`))await h(createApprovalCandidateEvent({candidateId:t.candidateId,outcome:t.status,requestId:t.requestId,responderPrincipalId:t.responder.principalId,reason:t.reason,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId})),o={...o,state:markApprovalCandidateHistoryEventEmitted({candidateId:t.candidateId,state:o.state})};for(let t of e.settlements.filter(e=>e.eventEmitted!==!0))await h(createApprovalSettledEvent({outcome:t.outcome===`allowed`?`approved`:`cancelled`,requestId:t.requestId,responderPrincipalId:t.actor.principalId,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId})),o={...o,state:markApprovalSettlementEventEmitted({requestId:t.requestId,state:o.state})}}if(T.kind===`park`)return{next:null,session:o};if(T.kind===`continue-coordination`)return{next:runStep,session:T.stepInput===void 0?o:queueDeferredStepInput(o,T.stepInput)};if(T.challenges.length>0){if(h)for(let e of T.challenges)await h(createAuthorizationRequiredEvent({authorization:e.challenge,candidateId:e.candidateId,description:e.challenge.instructions??`Authorization required for ${e.name}`,name:e.name,sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId,webhookUrl:e.hookUrl}));let e=T.stepInput===void 0?o:queueDeferredStepInput(o,T.stepInput);return{next:null,session:{...e,state:setPendingAuthorization(e.state,{challenges:T.challenges})}}}let E=resolvePendingInput({activeTurnId:_?.event.turnId??activeTurnId(c),deferMessagesWhileApprovalsPending:e.mode!==`conversation`,history:v.messages,internalStep:!isHarnessBetweenTurns(o),resolveApprovalKey:resolveApprovalKeyFromTools(w),session:o,stepInput:T.stepInput});if(E.outcome===`unresolved`){let t=v.outcome===`resolved`?{...E.session,history:validateHarnessModelMessages(v.messages)}:E.session;if(h&&e.mode===`conversation`&&E.deferredMessage===!0&&hasStepInput(i)){let n=createTurnInputMessages(x);l!==void 0&&(prepareDynamicInstructionPreamble(l,projectHistory(t.history,t.state)),prepareMemoryPreamble(l,{history:t.history,input:n,projector:e.historyProjector,state:t.state}));let r=[],i;try{let r=await preparePreambleTrace();c=await emitTurnPreamble(h,S??{},c,projectHistory([...t.history,...n],t.state),e.runtimeIdentity,r)}catch(e){return r=l===void 0?[]:drainDynamicInstructionUserMessages(l),i=l===void 0?void 0:drainMemoryCommit(l),t={...t,history:validateHarnessModelMessages([...i?.history??t.history,...r]),state:i?.state??t.state},o=t,failBoundaryEvent(e,{sessionStarted:!0,sequence:c.sequence,stepIndex:0,turnId:activeTurnId(c)})}return r=l===void 0?[]:drainDynamicInstructionUserMessages(l),i=l===void 0?void 0:drainMemoryCommit(l),t={...t,history:validateHarnessModelMessages([...i?.history??t.history,...r]),state:i?.state??t.state},c=await emitTurnEpilogue(h,c,e.mode),{next:null,session:setHarnessEmissionState(t,c)}}return v.outcome===`resolved`?(h&&e.mode===`conversation`&&(c=await emitTurnEpilogue(h,c,e.mode),t=setHarnessEmissionState(t,c)),{next:null,session:t}):{next:null,session:E.session}}if(E.resolvedInputs!==void 0)for(let e of E.resolvedInputs)await a?.publishInputResolutions({batch:e,sessionId:o.sessionId}),h&&await h(createInputResolvedEvent({resolutions:e.inputs.map(e=>{let t={kind:e.request.kind,outcome:e.outcome,requestId:e.request.requestId};return e.response===void 0?t:{...t,response:e.response}}),sequence:e.event.sequence,stepIndex:e.event.stepIndex,turnId:e.event.turnId}));if(h&&E.rejectedActions)for(let e of E.rejectedActions)for(let t of e.results)await h(createActionResultEvent({rejected:!0,result:t,sequence:e.event.sequence,stepIndex:e.event.stepIndex,turnId:e.event.turnId}));let D=activeTurnId(c),O=getTurnClientContextState(E.session.state,D),k=E.deferredContext===!0?void 0:readClientContext(x),A=(k??O?.messages)?.map(e=>createFrameworkUserMessage(`context.instruction`,e))??[],j=[];if(x?.context!==void 0&&E.deferredContext!==!0)for(let e of x.context)j.push(createFrameworkUserMessage(`context.instruction`,e));let ee=frameworkMessageKindForStepInput(x),te=normalizeUserContent(x?.message),M=te!==void 0&&!E.deferredMessage&&!E.consumedMessage?await stageAttachmentsToSandbox(te):void 0;M!==void 0&&j.push(ee===void 0?createUserMessage(`user`,M):createFrameworkUserMessage(ee,M));let N=[],P;if(h&&(hasStepInput(x)||hasStepInput(T.stepInput))){l!==void 0&&(prepareDynamicInstructionPreamble(l,projectHistory(E.session.history,E.session.state)),prepareMemoryPreamble(l,{history:E.messages,input:[...A,...j],projector:e.historyProjector,state:E.session.state}));try{let t=await preparePreambleTrace();c=await emitTurnPreamble(h,S??{},c,projectHistory([...E.messages,...A,...j],E.session.state),e.runtimeIdentity,t)}catch(e){return N=l===void 0?[]:drainDynamicInstructionUserMessages(l),P=l===void 0?void 0:drainMemoryCommit(l),o={...E.session,history:validateHarnessModelMessages([...P?.history??E.session.history,...N]),state:P?.state??E.session.state},failBoundaryEvent(e,{sessionStarted:!0,sequence:c.sequence,stepIndex:0,turnId:activeTurnId(c)})}N=l===void 0?[]:drainDynamicInstructionUserMessages(l),P=l===void 0?void 0:drainMemoryCommit(l),a?.setTurnId(c.turnId)}let ne=P?.history??E.session.history,re=E.session.history.length;o=setHarnessEmissionState({...E.session,history:validateHarnessModelMessages([...ne,...N]),state:P?.state??E.session.state},c);let F=validateHarnessModelMessages([...P?.history??E.messages.slice(0,re),...N,...P===void 0?E.messages.slice(re):[]]),I=await applySessionLimitContinuation({config:e,emit:h,emissionState:c,limitContinuation:E.limitContinuation,session:o});if(I.result!==null)return I.result;o=I.session;let ie=getAgentHandleStore(o.state);if(!hasUnansweredToolCall(F)){let e=await l?.get(BackgroundToolExecutorKey)?.readAgentViews?.(),t=e===void 0||e.length===0?void 0:[...projectParkedAgentHandles(ie??{handles:[]}).map(e=>({availability:`available`,id:e.identity.id,name:e.identity.name,statusLine:e.phase===`parked`?e.lastStatus:void 0})),...e],n=resolveAgentsAnnouncement({agentViews:t,messages:projectHistory(F,o.state),store:ie});n!==void 0&&F.push(createFrameworkUserMessage(`context.state`,n))}let L=O;k!==void 0&&(L={insertionIndex:O?.insertionIndex??F.length,messages:k,turnId:D}),L!==void 0&&(o=setTurnClientContextState(o,L)),F=[...F,...j];let createModelMessages=e=>{if(L===void 0||L.messages.length===0)return[...e];let t=Math.min(Math.max(0,L.insertionIndex),e.length);return[...e.slice(0,t),...L.messages.map(e=>createFrameworkUserMessage(`context.instruction`,e)),...e.slice(t)]},R=validateHarnessModelMessages(projectHistory(createModelMessages(F),o.state)),z=l,B;try{z!==void 0&&e.dispatchDynamicModelEvent!==void 0&&await e.dispatchDynamicModelEvent({ctx:z,event:{data:{sequence:c.sequence,stepIndex:c.stepIndex,turnId:c.turnId},type:`step.started`},messages:R}),B=await resolveEffectiveRuntimeModel({config:e,ctx:z,session:o})}catch(e){return failModelSelection(e,c)}o=B.session;let V=B.model,ae=detectPromptCachePath(V),H=ae.kind===`anthropic-direct`?getAnthropicCacheMarker():void 0,oe=buildGatewayAttributionHeaders(V,e.runtimeIdentity);if(R=validateHarnessModelMessages(normalizeModelMessages(projectHistory(createModelMessages(F),o.state))),h)try{await emitStepStarted(h,c,requireSessionModelReference(o).id,R)}catch(e){return failBoundaryEvent(e,c)}let U=getApprovedTools(o,resolveApprovalKeyFromTools(buildResponseAuthorizationTools({authoredTools:e.tools,context:z}))),W=c.sequence===0,se=W&&z?.get(ScheduleIdKey)!==void 0,G=resolveDeliveryPolicy({hasScheduleProvenance:se,hasOutputSchema:o.outputSchema!==void 0,isChild:z?.get(ParentSessionKey)!==void 0,isFirstTurn:W,taskDeliveryPhase:z?.get(TurnTaskDeliveryKey),taskDeliveryPolicy:z?.get(TaskDeliveryPolicyKey)}),createRequestMessages=()=>{let e=createCurrentMessages(F,{historyState:z?.get(HistoryStateKey),currentTurnMessages:j,projectedMessages:R});z!==void 0&&e.addSystem(buildDynamicInstructionMessages(z));let t=z?.get(TurnTaskDeliveryKey)===`initiating`?resolveInitiatingTaskContext({state:o.state,turnId:D}):void 0;e.addAnnouncements({availableSkills:z?.get(PendingSkillAnnouncementKey),taskState:t?.context,deliveryInstruction:G.instruction});let n=renderPendingApprovalsInstruction(getPendingInputBatches(o.state).flatMap(e=>e.requests));return n!==void 0&&e.add(n,`context.state`,{cacheFriendly:!1}),e},K=createRequestMessages(),q,finishSteeredStep=()=>(throwIfTurnAborted(e.abortSignal),z?.set(HistoryStateKey,K.historyState),q!==void 0&&(o=setTurnUsageState(o,accumulateTurnUsage({previous:getTurnUsageState(o.state),turnId:c.turnId,usage:q}))),{steered:!0,next:runStep,session:setHarnessEmissionState({...o,history:[...K.history]},advanceStep(c))}),J=[],withTrailingUserNote=(e,t)=>t?[...e,createFrameworkUserMessage(`execution.retry`,t)]:[...e],prepareModelInstructions=e=>{let t=e?[{role:`system`,content:e}]:[],n=o.agent.system?[{role:`system`,content:o.agent.system}]:[],r=K.systemMessages.length>0||t.length>0?[...t,...n,...K.systemMessages]:void 0,i=r!==void 0&&H?applySystemCacheBreakpoint(r,H):r;return i===void 0?o.agent.system??void 0:mergeSystemInstructions(i)},prepareModelCallInput=e=>{let t=prepareModelInstructions(e);return{instructions:t,telemetryRuntimeContext:a?.resolveRuntimeContext({eveVersion,emissionState:c,environment,modelInput:{instructions:t,messages:J},session:o})}},ce=e.tools,Y=0,X,throwIfCompactionFailed=()=>{if(X!==void 0)throw X.error},prepareModelTools=async t=>{let n=buildHarnessToolsWithDynamicSubagents(e.tools,z),i=createBackgroundToolCallBatch(),a=getAdvertisedTools({session:o,tools:n});ce=a;let s=await buildToolSetWithProviderTools({approvedTools:U,backgroundBatch:i,disabledProviderTools:t.disabledProviderTools,modelReference:requireSessionModelReference(o),tools:a});if(z!==void 0){let e=getAdvertisedTools({session:o,tools:buildDynamicTools(z)}),n=buildToolSetFromDefinitions({approvedTools:U,backgroundBatch:i,disabledProviderTools:t.disabledProviderTools,tools:e});for(let[e,t]of Object.entries(n)){let n=a.get(e);if(n?.runtimeAction!==void 0||n?.workflowId!==void 0)throw Error(`Dynamic tool "${e}" collides with a coordination-visible deferred tool.`);s[e]=t}}o.outputSchema!==void 0&&(s[FINAL_OUTPUT_TOOL_NAME]=buildFinalOutputTool(o.outputSchema));let c=await getAdvertisedTools({modelTools:s,session:o,tools:a});o=c.session;let l=c.modelTools,u=H?applyLastToolCacheBreakpoint(l,H):l;for(let e of Object.values(u)){let t=e.execute;t!==void 0&&(e.execute=(...e)=>(r.protectToolExecution(),t(...e)));let n=e.onInputAvailable;n!==void 0&&(e.onInputAvailable=(...e)=>(r.protectToolExecution(),n(...e)))}return{effectiveTools:u,backgroundBatch:i,advertisedHarnessTools:a,modelTools:l}},runSingleModelCall=async t=>{let{effectiveTools:n,backgroundBatch:i,advertisedHarnessTools:s,modelTools:l}=await prepareModelTools(t);K=createRequestMessages(),Y=await estimateRequestEnvelope({history:R,instructions:prepareModelInstructions(t.extraSystemNote),messages:withTrailingUserNote(K.nonSystemMessages,t.trailingUserNote),tools:n});let u=L===void 0?void 0:Math.max(0,F.length-L.insertionIndex),d=await(async()=>{try{return await maybeCompact({abortSignal:e.abortSignal,auth:z?.get(AuthKey)??null,emit:h,emissionState:c,historyProjector:e.historyProjector,messages:[...F],model:V,promptMessages:createModelMessages(F),requestEnvelopeTokens:Y,resolveModel:e.resolveModel,runtimeIdentity:e.runtimeIdentity,session:o,telemetry:a?.telemetry()})}catch(e){throw X={error:e},e}})();o=d.session,d.compacted&&(F=d.messages,L!==void 0&&u!==void 0&&(L={...L,insertionIndex:Math.max(0,F.length-u)},o=setTurnClientContextState(o,L)),o={...o,compaction:{recentWindowSize:o.compaction.recentWindowSize,threshold:o.compaction.threshold,thresholdPercent:o.compaction.thresholdPercent}},R=validateHarnessModelMessages(normalizeModelMessages(projectHistory(createModelMessages(F),o.state))),K=createRequestMessages(),{effectiveTools:n,backgroundBatch:i,advertisedHarnessTools:s,modelTools:l}=await prepareModelTools(t),Y=await estimateRequestEnvelope({history:R,instructions:prepareModelInstructions(t.extraSystemNote),messages:withTrailingUserNote(K.nonSystemMessages,t.trailingUserNote),tools:n})),Y=Math.max(0,Y-(estimateTokens(K.history)-estimateTokens(F))),r.begin(),J=await hydrateSandboxAttachments(K.nonSystemMessages);let{instructions:f,telemetryRuntimeContext:m={}}=prepareModelCallInput(t.extraSystemNote);t.retryReason&&(m[`eve.retry.reason`]=t.retryReason);let g=withTrailingUserNote(J,t.trailingUserNote),_=activeTurnId(c),v=a?.prepareAttempt({attemptIndex:t.attemptIndex,runtimeContext:m,stepIndex:c.stepIndex,turnId:_});p=v?.scope;let y=buildStepHooks({auth:z?.get(AuthKey)??null,cachePath:ae,emit:h,emissionState:c,emitStepStarted:t.suppressStepStartedEmission!==!0,marker:H,session:o}),b={headers:oe,instructions:f,model:V,onLanguageModelCallEnd(e){if(!r.interrupted){q=extractTokenUsageDelta({usage:e.usage,costUsd:extractGatewayCostUsd(e.providerMetadata)});for(let t of e.content)t.type!==`tool-call`||t.providerExecuted===!0||isInvalidToolCall(t)||i.register({callId:t.toolCallId,input:t.input,toolName:t.toolName})}},onToolExecutionEnd:logToolExecutionError,onError(e){r.interrupted||summarizeKnownError(e.error)?.tags.includes(`config`)!==!0&&logError(log,`tool-loop stream error`,e.error)},onStepEnd:y.onStepEnd,onStepStart:y.onStepStart,prepareStep:y.prepareStep,reasoning:o.agent.modelReference?.reasoning??o.agent.reasoning,runtimeContext:m,stopWhen:isStepCount(1),telemetry:v?.telemetry,toolApproval:buildToolApproval(l,r.signal),tools:n},x=new ToolLoopAgent(b),executeModelCall=async()=>{if(h){let t=[...e.tools].filter(([e,t])=>t.runtimeAction!==void 0&&s.get(e)===void 0).map(([e])=>e),n=new Set([FINAL_OUTPUT_TOOL_NAME,...t]),i=await x.stream({abortSignal:r.signal,messages:g}),{emittedActionCallIds:a,handledInlineToolResultCallIds:o,invalidInputToolCallIds:l,inlineAuthorizationResults:u,trailingInlineToolResultParts:d}=await emitStreamContent(h,c,interruptStreamOnFailure(i.fullStream,r.signal),{excludedActionToolNames:n,tools:s});throwIfTurnAborted(e.abortSignal),r.check();let[f,p]=await Promise.all([y.stepResult,i.responseMessages]);if(f.finishReason===`content-filter`)throw new ContentFilteredModelResponseError(readGatewayGenerationId(f.providerMetadata));if(isEmptyModelResponse(f)&&extractToolResultCallIds(p).size===0&&u.length===0&&d.length===0)throw new EmptyModelResponseError;await emitStepActions(h,c,f,{emittedActionCallIds:a,excludedActionCallIds:l,excludedActionToolNames:n,handledInlineToolResultCallIds:o,tools:s});let m=f.toolResults,_=new Map(m.map(e=>[e.toolCallId,e]));for(let e of u)_.set(e.toolCallId,e);return withAccumulatedResponseMessages({invalidInputToolCallIds:l,responseMessages:appendMissingToolResultMessages({append:d,responseMessages:p}),stepResult:f,toolResults:[..._.values()]})}let t=await x.generate({abortSignal:r.signal,messages:g});throwIfTurnAborted(e.abortSignal),r.check();let n=await y.stepResult;if(n.finishReason===`content-filter`)throw new ContentFilteredModelResponseError(readGatewayGenerationId(n.providerMetadata));if(isEmptyModelResponse(n)&&extractToolResultCallIds(t.responseMessages).size===0)throw new EmptyModelResponseError;return withAccumulatedResponseMessages({responseMessages:t.responseMessages,stepResult:n})};try{let e=await executeModelCall();return await v?.complete(),e}catch(e){return r.interrupted?await v?.complete():await v?.fail(e),r.check(),rethrowNoOutputAsEmptyResponse(e)}},le=0,runOneModelCall=async e=>runModelCallWithRetries(t=>runSingleModelCall({...e,attemptIndex:le++,suppressStepStartedEmission:t!==1||e.suppressStepStartedEmission}),{sessionId:o.sessionId,turnId:c.turnId,canRetry:()=>X===void 0},r.signal),ue=await enforceSessionUsageLimit({config:e,emit:h,emissionState:c,messages:R,session:o});if(ue!==null)return ue;let Z;try{Z=await runOneModelCall({suppressStepStartedEmission:!0})}catch(t){if(throwIfCompactionFailed(),throwIfTurnAborted(e.abortSignal),r.interrupted)return finishSteeredStep();let n=await runModelCallRecoveryPipeline({error:t,stages:[e=>attemptUnsupportedProviderToolRecovery({error:e.error,runOneModelCall,sessionId:o.sessionId,turnId:c.turnId}),e=>attemptEmptyResponseRecovery({emptyDeliveryEnabled:G.allowsEmptyDelivery,error:e.error,retryCallOptions:e.retryCallOptions,runOneModelCall,sessionId:o.sessionId,turnId:c.turnId})]});if(throwIfCompactionFailed(),throwIfTurnAborted(e.abortSignal),r.interrupted)return finishSteeredStep();if(n.outcome===`recovered`)Z=n.result;else{let t=n.error;if(a?.recordError(t),!h)throw t;let r=extractWorkflowStreamWriteErrorDetails(t);if(r!==null){let e=createErrorId();return log.error(`workflow stream write failed — parking session for retry by the user`,{...r,errorId:e,error:t,sessionId:o.sessionId,turnId:c.turnId}),c=await emitRecoverableFailedTurn(h,c,{code:`WORKFLOW_STREAM_WRITE_FAILED`,continuationToken:o.continuationToken,details:{...r,errorId:e},message:toErrorMessage(t)}),{next:null,session:setHarnessEmissionState(o,c)}}let i=classifyModelCallError(t),s=createErrorId(),l=summarizeKnownError(t),u=l===null?extractUpstreamRejectionMessage(t):null,d=l?.message??u?.message??toErrorMessage(t),p=l?.hint===void 0?d:`${d} ${l.hint}`,m=extractModelCallErrorDetails(t),g=buildModelCallFailureDetails({catalogSummary:l,error:t,errorId:s,modelCallDetails:m,upstreamRejection:u}),_=buildModelCallFailureLogFields({error:t,errorId:s,modelCallDetails:m,recognized:l!==null||u!==null,sessionId:o.sessionId,turnId:c.turnId});if(i===`terminal`)return l===null?log.error(u?.message??`model call failed terminally`,_):log.error(`${l.name}: ${l.message}`,{errorId:s,hint:l.hint,sessionId:o.sessionId,turnId:c.turnId}),await emitFailedStep(h,c,{code:`MODEL_CALL_FAILED`,details:g,message:d,sessionId:o.sessionId}),{next:e.mode===`task`||f?{done:!0,isError:!0,output:p}:{done:!0,output:``},session:o};if(e.mode===`task`){if(i===`recoverable`&&!(t instanceof EmptyModelResponseError)&&!(t instanceof ContentFilteredModelResponseError))throw log.warn(u?.message??`model call failed recoverably in task mode — rethrowing for durable step retry`,_),t;return log.error(u?.message??`model call failed; failing the task run`,_),await emitFailedStep(h,c,{code:`MODEL_CALL_FAILED`,details:g,message:d,sessionId:o.sessionId}),{next:{done:!0,isError:!0,output:p},session:o}}log.error(u?.message??`model call failed — parking session for retry by the user`,_),c=await emitRecoverableFailedTurn(h,c,{code:`MODEL_CALL_FAILED`,continuationToken:o.continuationToken,details:g,message:d});let v={isError:!0,output:p};return o={...o,outputSchema:void 0},{next:null,session:setHarnessEmissionState(o,c),settledTurn:v}}}let Q=accumulateTurnUsage({previous:getTurnUsageState(o.state),turnId:c.turnId,usage:extractTokenUsageDelta({costUsd:extractGatewayCostUsd(Z.providerMetadata),usage:Z.usage})});o=setTurnUsageState(o,Q),q=void 0;let $;try{$=formatLanguageModelGatewayId(V)}catch{$=void 0}await setEveAttributes({"$eve.model":$,"$eve.input_tokens":Q.inputTokens,"$eve.output_tokens":Q.outputTokens,"$eve.cache_read_tokens":Q.cacheReadTokens,"$eve.cache_write_tokens":Q.cacheWriteTokens,"$eve.cost_usd":Q.sawCost?Q.costUsd:void 0,"$eve.tool_count":e.tools.size});let de;try{r.check(),de=await handleStepResult({config:e,emit:h,emissionState:r.outputStarted?{...c,assistantOutputStarted:!0}:c,requestEnvelopeTokens:Y,durableModelPromptMessageCount:L===void 0||L.messages.length===0?J.length:void 0,promptMessages:K.history,result:Z,runStep,session:o,coordinationTools:ce})}catch(t){if(throwIfTurnAborted(e.abortSignal),r.interrupted)return finishSteeredStep();throw t}return z?.set(HistoryStateKey,K.historyState),de}return runStep}function extractTokenUsageDelta(e){let t=e.usage;if(t!==void 0||e.costUsd!==void 0)return{cacheReadTokens:t?.inputTokenDetails?.cacheReadTokens,cacheWriteTokens:t?.inputTokenDetails?.cacheWriteTokens,costUsd:e.costUsd,inputTokens:t?.inputTokens,outputTokens:t?.outputTokens}}function extractGatewayCostUsd(e){let t=readGatewayMetadata(e)?.cost;if(typeof t==`number`&&Number.isFinite(t))return t;if(typeof t==`string`){let e=Number(t);return Number.isFinite(e)?e:void 0}}function readGatewayMetadata(e){let t=e?.gateway;return t&&typeof t==`object`&&!Array.isArray(t)?t:void 0}function buildModelCallFailureDetails(e){let{catalogSummary:t,error:n,errorId:r,modelCallDetails:i,upstreamRejection:a}=e;if(t!==null){let e={errorId:r,message:t.message,name:t.name,semanticErrorId:t.id,...i};return t.hint!==void 0&&(e.hint=t.hint),e}return a===null?{...formatError(n,r),...i}:{errorId:r,message:toErrorMessage(n),name:a.name,...i}}function buildModelCallFailureLogFields(e){let t={errorId:e.errorId,sessionId:e.sessionId,turnId:e.turnId};return e.recognized?{...t,details:e.modelCallDetails}:{...t,error:e.error}}async function runModelCallRecoveryPipeline(e){let t=e.error,n;for(let r of e.stages){let e=await r({error:t,retryCallOptions:n});if(e.outcome===`recovered`)return e;e.outcome===`failed`&&(t=e.error,n=e.retryCallOptions)}return{outcome:`failed`,error:t}}function withAccumulatedResponseMessages(e){let{stepResult:t}=e;return{content:t.content,finishReason:t.finishReason,...e.invalidInputToolCallIds===void 0?{}:{invalidInputToolCallIds:e.invalidInputToolCallIds},providerMetadata:t.providerMetadata,response:{...t.response,messages:[...e.responseMessages]},text:t.text,toolCalls:t.toolCalls,toolResults:e.toolResults===void 0?t.toolResults:[...e.toolResults],usage:t.usage}}function appendMissingToolResultMessages(e){let t=extractToolResultCallIds(e.responseMessages),n=e.append.filter(e=>!t.has(e.toolCallId));return[...e.responseMessages,...n.length>0?[{role:`tool`,content:[...n]}]:[]]}function getInvalidToolCallInputErrors(e){let t=[];for(let n of e.toolCalls){if(n.toolName===FINAL_OUTPUT_TOOL_NAME)continue;let e=getInvalidToolCallInputError({toolCall:n});e!==void 0&&t.push(e)}return t}function extractToolResultCallIds(e){let t=new Set;for(let n of e)if(Array.isArray(n.content))for(let e of n.content)typeof e==`object`&&e&&e.type===`tool-result`&&t.add(e.toolCallId);return t}function hasUnansweredToolCall(e){let t=new Set,n=new Set;for(let r of e)if(Array.isArray(r.content))for(let e of r.content)typeof e==`object`&&e&&(e.type===`tool-call`&&t.add(e.toolCallId),e.type===`tool-result`&&n.add(e.toolCallId));for(let e of t)if(!n.has(e))return!0;return!1}async function attemptUnsupportedProviderToolRecovery(e){let t=extractUnsupportedProviderToolTypes(e.error);if(t.length===0)return{outcome:`skipped`};let n=[];for(let e of t){let t=resolveFrameworkToolFromUpstreamType(e);t!==null&&!n.includes(t)&&n.push(t)}if(n.length===0)return{outcome:`skipped`};log.warn(`disabling unsupported provider tool(s); retrying step once`,{disabled:n,sessionId:e.sessionId,turnId:e.turnId,upstreamTypes:t});let r={disabledProviderTools:new Set(n),extraSystemNote:buildDisabledToolNote(n)};try{return{outcome:`recovered`,result:await e.runOneModelCall({...r,suppressStepStartedEmission:!0})}}catch(e){return{outcome:`failed`,error:e,retryCallOptions:r}}}function buildDisabledToolNote(e){let t=e.join(`, `);return`The following ${e.length===1?`tool is`:`tools are`} not available with the current model and has been removed: ${t}. Proceed using the remaining tools or your training knowledge.`}function isEmptyModelResponse(e){return e.toolCalls.length===0&&e.toolResults.length===0&&resolveAssistantStepText(e.response.messages,e.text)===null}function rethrowNoOutputAsEmptyResponse(e){throw isNoOutputGeneratedError(e)?new EmptyModelResponseError({cause:e}):e}const EMPTY_RESPONSE_NUDGE=`Your previous reply was empty and was not delivered. Answer now from the tool results above; do not re-run tools or mention this notice.`;function buildEmptyResponseNudge(e){return e?`${EMPTY_RESPONSE_NUDGE} If the current task explicitly requires conditional delivery and there is nothing to report, reply with exactly ${EMPTY_DELIVERY_SENTINEL}.`:EMPTY_RESPONSE_NUDGE}async function attemptEmptyResponseRecovery(e){if(!(e.error instanceof EmptyModelResponseError))return{outcome:`skipped`};log.warn(`empty model response; reissuing the model call once`,{sessionId:e.sessionId,turnId:e.turnId});try{return{outcome:`recovered`,result:await e.runOneModelCall({...e.retryCallOptions,retryReason:`empty-response`,suppressStepStartedEmission:!0,trailingUserNote:buildEmptyResponseNudge(e.emptyDeliveryEnabled)})}}catch(t){return{outcome:`failed`,error:t,retryCallOptions:e.retryCallOptions}}}async function handleStepResult(e){let{config:t,emit:n,promptMessages:r,result:i,runStep:a}=e,{emissionState:o,session:s}=e,c=resolveAssistantStepText(i.response.messages,i.text),l=i.finishReason!==`tool-calls`&&i.toolCalls.length===0&&hasEmptyDeliverySentinel(c),u=getInvalidToolCallInputErrors({toolCalls:i.toolCalls}),d=new Set([...i.invalidInputToolCallIds??[],...i.toolCalls.filter(isInvalidToolCall).map(e=>e.toolCallId),...u.map(e=>e.toolCallId)]),f=l?[]:appendMissingToolResultMessages({append:u.map(e=>createToolResultMessagePartFromToolError(e)),responseMessages:i.response.messages}),p=l?null:c,m=new Set;for(let e of[...i.content??[],...i.toolResults??[]])(e.type===`tool-result`||e.type===`tool-error`)&&e.providerExecuted===!0&&m.add(e.toolCallId);let h=normalizeProviderToolHistory({messages:f,providerExecutedOutcomeIds:m}),g=h.messages,_=setRequestEnvelopeTokens({...s,compaction:createNextCompactionConfig(s.compaction,e.durableModelPromptMessageCount,i)},i.usage?.inputTokens!==void 0&&e.durableModelPromptMessageCount!==void 0?e.requestEnvelopeTokens:void 0),v=extractToolApprovalInputRequests({content:i.content??[],excludedCallIds:d}),y=v,b=renderPendingApprovalsSnippet(v),x=g.findIndex(e=>e.role!==`tool`),S=x===-1?g:g.slice(0,x),C=g.slice(S.length),w=validateHarnessModelMessages([...r,...S,...b===void 0?[]:[createFrameworkUserMessage(`context.state`,b)]]),T=getAdvertisedTools({session:_,tools:e.coordinationTools}),E=(i.toolCalls??[]).filter(e=>!d.has(e.toolCallId)).filter(t=>isDeferredHarnessTool(e.coordinationTools.get(t.toolName))).filter(e=>isDeferredHarnessTool(T.get(e.toolName))?!0:(log.warn(`deferred tool call blocked because tool is not advertised`,{callId:e.toolCallId,sessionId:_.sessionId,toolName:e.toolName}),!1)).map(e=>createCoordinationRequestFromToolCall({toolCall:e,tools:T}));if(E.length>0){let e=E.flatMap(e=>e.kind===`runtime-action`?[e.request]:[]),t=E.flatMap(e=>e.kind===`task`?[e.request]:[]);if(y.length===0)return{next:null,session:setHarnessEmissionState(setPendingCoordinationBatch({runtimeActions:e,tasks:t,event:{sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId},responseMessages:g,session:{..._,history:validateHarnessModelMessages(r)}}),advanceStep(o))};let i=setPendingCoordinationBatch({runtimeActions:e,tasks:t,event:{sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId},responseMessages:C,session:{..._,history:w}});return i=appendPendingInputBatch({event:{sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId},requests:y,responseMessages:[],session:i}),n&&await n(createInputRequestedEvent({requests:y,sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId})),{next:null,session:setHarnessEmissionState(i,advanceStep(o))}}if(y.length>0){let e=buildResponseAuthorizationTools({authoredTools:t.tools,context:contextStorage.getStore()}),r=appendPendingInputBatch({event:{sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId},requests:y,responseAuthRequiredRequestIds:v.filter(t=>{let n=e.get(t.action.toolName)?.approval;return n!==void 0&&typeof n!=`function`&&n.response!==void 0}).map(e=>e.requestId),responseMessages:C,session:{..._,history:w}});return n&&(await n(createInputRequestedEvent({requests:y,sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId})),t.mode===`conversation`&&(o=await emitTurnEpilogue(n,o,t.mode),r=setHarnessEmissionState(r,o))),{next:hasRunnableDeferredStepInput(r)?a:null,session:r}}let D=resolveInlineAuthorizationInterrupt({messages:[...r,...g],toolResults:i.toolResults});if(D){let{challenges:e,history:r}=D;if(n){for(let t of getSupersededAuthorizationChallenges(_.state,e))await n(createAuthorizationCompletedEvent({attemptId:t.attemptId,authorization:t.challenge,name:t.name,outcome:`failed`,reason:`Superseded by a newer authorization attempt.`,sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId}));for(let t of e)await n(createAuthorizationRequiredEvent({attemptId:t.attemptId,authorization:t.challenge,name:t.name,description:t.challenge.instructions??`Authorization required for ${t.name}`,webhookUrl:t.hookUrl,sequence:o.sequence,stepIndex:o.stepIndex,turnId:o.turnId}));t.mode===`conversation`&&(o=await emitTurnEpilogue(n,o,t.mode))}return{next:null,session:setHarnessEmissionState({..._,history:validateHarnessModelMessages(r),state:setPendingAuthorization(_.state,{challenges:e})},o)}}let O=g,k=validateHarnessModelMessages([...r,...O]),A={..._,history:k};return(A.outputSchema===void 0||extractFinalOutput(i)===void 0)&&(O.at(-1)?.role===`tool`||h.outcomeEndsResponse||hasRunnableDeferredStepInput(A))?(n&&(o=advanceStep(o),A=setHarnessEmissionState(A,o)),{next:a,session:A}):t.mode===`task`&&contextStorage.getStore()?.get(ScheduleIdKey)!==void 0&&contextStorage.getStore()?.get(BackgroundToolExecutorKey)?.hasPendingTasks?.()===!0?deferTaskTurn({emissionState:o,emit:n,history:r,result:i,schema:A.outputSchema,session:A,stepOutput:p}):t.mode===`task`?finishTaskTurn({emissionState:o,emit:n,history:r,result:i,schema:A.outputSchema,session:A,stepOutput:p}):finishConversationTurn({emissionState:o,emit:n,history:r,result:i,schema:A.outputSchema,session:A,stepOutput:p})}async function deferTaskTurn(e){let{emit:t,history:n,result:r,schema:i,stepOutput:a}=e,{emissionState:o,session:s}=e;s=clearTurnClientContextState(s);let c=i===void 0?void 0:extractFinalOutput(r);return c!==void 0&&(s={...persistStructuredAssistantTurn(s,n,c),outputSchema:i}),t&&(o=await emitTurnEpilogue(t,o,`conversation`),s=setHarnessEmissionState(s,o)),{next:null,session:s,settledTurn:{output:c??a??``}}}function isDeferredHarnessTool(e){return e?.runtimeAction!==void 0||e?.workflowId!==void 0&&e.execution!==`background`}const OUTPUT_SCHEMA_NOT_FULFILLED={code:`OUTPUT_SCHEMA_NOT_FULFILLED`,message:`The agent could not produce a result matching the requested schema.`};function extractFinalOutput(e){return(e.toolCalls??[]).find(e=>e.toolName===FINAL_OUTPUT_TOOL_NAME&&!isInvalidToolCall(e))?.input}function persistStructuredAssistantTurn(e,t,n){return{...e,history:[...t,{content:JSON.stringify(n),role:`assistant`}],outputSchema:void 0}}async function emitStructuredResult(e,t,n,r){return await e(createResultCompletedEvent({result:n,sequence:t.sequence,stepIndex:t.stepIndex,turnId:t.turnId})),emitTurnEpilogue(e,t,r)}async function finishTaskTurn(e){let{emit:t,history:n,result:r,schema:i,stepOutput:a}=e,{emissionState:o,session:s}=e;if(s=clearTurnClientContextState(s),i===void 0)return t&&(o=await emitTurnEpilogue(t,o,`task`),s=setHarnessEmissionState(s,o)),{next:{done:!0,output:a??``},session:s};let c=extractFinalOutput(r);return c===void 0?(s={...s,outputSchema:void 0},t&&await emitFailedStep(t,o,{...OUTPUT_SCHEMA_NOT_FULFILLED,sessionId:s.sessionId}),{next:{done:!0,isError:!0,output:OUTPUT_SCHEMA_NOT_FULFILLED.message},session:s}):(s=persistStructuredAssistantTurn(s,n,c),t&&(o=await emitStructuredResult(t,o,c,`task`),s=setHarnessEmissionState(s,o)),{next:{done:!0,output:c},session:s})}async function finishConversationTurn(e){let{emit:t,history:n,result:r,schema:i,stepOutput:a}=e,{emissionState:o,session:s}=e;if(s=clearTurnClientContextState(s),i===void 0)return t&&(o=await emitTurnEpilogue(t,o,`conversation`),s=setHarnessEmissionState(s,o)),{next:null,session:s,settledTurn:{output:a??``}};let c=extractFinalOutput(r);if(c===void 0){s={...s,outputSchema:void 0},t&&(o=await emitRecoverableFailedTurn(t,o,{...OUTPUT_SCHEMA_NOT_FULFILLED,continuationToken:s.continuationToken}),s=setHarnessEmissionState(s,o));let e={isError:!0,output:OUTPUT_SCHEMA_NOT_FULFILLED.message};return{next:null,session:s,settledTurn:e}}return s=persistStructuredAssistantTurn(s,n,c),t&&(o=await emitStructuredResult(t,o,c,`conversation`),s=setHarnessEmissionState(s,o)),{next:null,session:s,settledTurn:{output:c}}}function createNextCompactionConfig(e,t,n){let r={recentWindowSize:e.recentWindowSize,threshold:e.threshold,thresholdPercent:e.thresholdPercent};return n.usage?.inputTokens!==void 0&&t!==void 0&&(r.lastKnownInputTokens=n.usage.inputTokens,r.lastKnownPromptMessageCount=t),r}function replaceSessionHistory(e,t){return contextStorage.getStore()?.delete(HistoryStateKey),{...e,history:t,compaction:{recentWindowSize:e.compaction.recentWindowSize,threshold:e.compaction.threshold,thresholdPercent:e.compaction.thresholdPercent}}}async function maybeCompact(e){let{emit:t,emissionState:n}=e,r=e.messages,i=e.session,a=e.promptMessages??r,o=validateHarnessModelMessages(e.historyProjector?.({messages:a,state:i.state})??a),s=e.force===!0||shouldCompact(o,i.compaction,e.requestEnvelopeTokens,getRequestEnvelopeTokens(i)),c=shouldCanonicalizeMemory(r);if(!s&&!c)return{compacted:!1,messages:r,session:i};let l=await resolveCompactionModel({compactionModelReference:i.agent.compactionModelReference,model:e.model,modelReference:requireSessionModelReference(i),resolveModel:e.resolveModel}),u=i.agent.compactionModelReference??requireSessionModelReference(i),d=mergeProviderSafetyIdentifier(u,l.providerOptions,e.auth);if(t){let a=contextStorage.getStore();a!==void 0&&prepareMemoryCompaction(a,{history:r,state:i.state}),await t(createCompactionRequestedEvent({modelId:formatLanguageModelGatewayId(l.model),sequence:n.sequence,sessionId:i.sessionId,turnId:n.turnId,usageInputTokens:getInputTokenCount(o,i.compaction,e.requestEnvelopeTokens,getRequestEnvelopeTokens(i))}),o)}let f=canonicalizeMemoryRecords(r),p=validateHarnessModelMessages(e.historyProjector?.({messages:f.ordinary,state:i.state})??f.ordinary),m=e.requestEnvelopeTokens??0,h={...i.compaction,threshold:Math.max(1,i.compaction.threshold-m),lastKnownInputTokens:i.compaction.lastKnownInputTokens===void 0?void 0:Math.max(0,i.compaction.lastKnownInputTokens-Math.min(getRequestEnvelopeTokens(i)??0,m))},g=s?await compactMessages([...p],l.model,h,d,e.telemetry,buildGatewayAttributionHeaders(l.model,e.runtimeIdentity),e.abortSignal,e.force===!0,e.requestEnvelopeTokens===void 0?void 0:Math.max(0,getInputTokenCount(o,i.compaction,m,getRequestEnvelopeTokens(i))-m)):[...p];if(r=validateHarnessModelMessages([...f.memory,...g]),t){let a=contextStorage.getStore();if(a!==void 0&&prepareMemoryCompaction(a,{history:r,state:i.state}),await t(createCompactionCompletedEvent({modelId:formatLanguageModelGatewayId(l.model),sequence:n.sequence,sessionId:i.sessionId,turnId:n.turnId}),e.historyProjector?.({messages:r,state:i.state})??r),a!==void 0){let e=drainMemoryCommit(a);e!==void 0&&(r=validateHarnessModelMessages(e.history),i={...i,state:e.state})}}return{compacted:!0,messages:r,session:replaceSessionHistory(i,r)}}function resolveApprovalKeyFromTools(e){return t=>{let n=e.get(t.action.toolName);if(n?.approvalKey!==void 0)return n.approvalKey(t.action.input)}}async function runModelCallWithRetries(e,t,n){for(let r=1;;r++){n.throwIfAborted();try{return await e(r)}catch(e){if(n.throwIfAborted(),t.canRetry?.()===!1||r===3||classifyModelCallError(e)!==`retry`)throw e;let i=500*2**(r-1)+Math.floor(Math.random()*250);log.warn(`model call failed transiently — retrying`,{attempt:r,delayMs:i,sessionId:t.sessionId,turnId:t.turnId,error:e}),await setTimeout(i,void 0,{signal:n})}}}export{appendMissingToolResultMessages,createToolLoopHarness};