Remove Studio Code turn cap handling

apps/cli/ai/agent.ts

@@ -23,7 +23,6 @@ export interface AiAgentConfig {
 	prompt: string;
 	env?: Record< string, string >;
 	model?: AiModelId;
-	maxTurns?: number;
 	resume?: string;
 	activeSite?: SiteInfo | null;
 	wpcomAccessToken?: string;
@@ -58,7 +57,6 @@ export function startAiAgent( config: AiAgentConfig ): Query {
 		prompt,
 		env,
 		model = DEFAULT_MODEL,
-		maxTurns = 75,
 		resume,
 		activeSite,
 		wpcomAccessToken,
@@ -137,7 +135,6 @@ export function startAiAgent( config: AiAgentConfig ): Query {
 				append: buildSystemPrompt( systemPromptOptions ),
 			},
 			mcpServers,
-			maxTurns,
 			cwd: STUDIO_SITES_ROOT,
 			tools: { type: 'preset', preset: 'claude_code' },
 			permissionMode: 'auto',

apps/cli/ai/eval-runner.ts

@@ -20,7 +20,6 @@ import type { AiProviderId } from 'cli/ai/providers';
 
 interface EvalRunnerInput {
 	prompt: string;
-	maxTurns?: number;
 	timeoutMs?: number;
 }
 
@@ -134,7 +133,6 @@ function readInput(): EvalRunnerInput {
 
 	return {
 		prompt: ( vars.prompt as string ) ?? prompt,
-		maxTurns: typeof vars.maxTurns === 'number' ? vars.maxTurns : undefined,
 		timeoutMs: typeof vars.timeoutMs === 'number' ? vars.timeoutMs : undefined,
 	};
 }
@@ -185,7 +183,6 @@ async function runEval( input: EvalRunnerInput ) {
 	const query = startAiAgent( {
 		prompt: input.prompt.trim(),
 		env,
-		maxTurns: input.maxTurns ?? 50,
 	} );
 	phaseTimingsMs.start_ai_agent_ms = Date.now() - phaseStartedAt;
 

apps/cli/ai/output-adapter.ts

@@ -4,9 +4,12 @@ import type { SDKMessage } from '@anthropic-ai/claude-agent-sdk';
 import type { AiProviderId } from 'cli/ai/providers';
 import type { SiteInfo } from 'cli/ai/ui';
 
-export type HandleMessageResult =
-	| { type: 'result'; sessionId: string; success: boolean; interrupted?: boolean }
-	| { type: 'max_turns'; sessionId: string; numTurns: number; costUsd?: number };
+export type HandleMessageResult = {
+	type: 'result';
+	sessionId: string;
+	success: boolean;
+	interrupted?: boolean;
+};
 
 export interface AiOutputAdapter {
 	currentProvider: AiProviderId;
@@ -134,14 +137,6 @@ export class JsonAdapter implements AiOutputAdapter {
 
 		if ( message.type === 'result' ) {
 			this.sessionId = message.session_id;
-			if ( message.subtype === 'error_max_turns' ) {
-				return {
-					type: 'max_turns',
-					sessionId: message.session_id,
-					numTurns: message.num_turns,
-					costUsd: message.total_cost_usd,
-				};
-			}
 			return {
 				type: 'result',
 				sessionId: message.session_id,

apps/cli/ai/ui.ts

@@ -2219,15 +2219,6 @@ export class AiChatUI implements AiOutputAdapter {
 			case 'result': {
 				this.hideLoader();
 
-				// Max-turns exhaustion has dedicated upstream handling (prompts user to continue).
-				if ( message.subtype === 'error_max_turns' ) {
-					return {
-						type: 'max_turns',
-						sessionId: message.session_id,
-						numTurns: message.num_turns,
-					};
-				}
-
 				// When the cap message was surfaced earlier in this turn,
 				// the SDK still classifies the turn as successful (or returns
 				// is_error with the raw upstream body). Skip the "Done" /

apps/cli/commands/ai/index.ts

@@ -2,7 +2,7 @@ import { listAiSessions } from '@studio/common/ai/sessions/store';
 import { type LoadedAiSession, type TurnStatus } from '@studio/common/ai/sessions/types';
 import { buildSkillInvocationPrompt } from '@studio/common/ai/slash-commands';
 import { readAuthToken } from '@studio/common/lib/shared-config';
-import { __, _n, sprintf } from '@wordpress/i18n';
+import { __, sprintf } from '@wordpress/i18n';
 import { DEFAULT_MODEL, startAiAgent, type AiModelId, type AskUserQuestion } from 'cli/ai/agent';
 import {
 	getAvailableAiProviders,
@@ -423,7 +423,7 @@ export async function runCommand( options: {
 	async function runAgentTurn(
 		prompt: string,
 		retryAttempt = 0
-	): Promise< { status: TurnStatus; usage?: { numTurns: number; costUsd?: number } } > {
+	): Promise< { status: TurnStatus } > {
 		await maybeAutoSwitchProvider();
 		const recorder = await ensureSessionRecorder();
 		const env = await resolveAiEnvironment( currentProvider, {
@@ -485,7 +485,6 @@ export async function runCommand( options: {
 			resolveInterrupt();
 		};
 
-		let maxTurnsResult: { numTurns: number } | undefined;
 		const turnState: { status: TurnStatus } = { status: 'interrupted' };
 
 		const consumeAgentTurn = async (): Promise< void > => {
@@ -500,12 +499,7 @@ export async function runCommand( options: {
 					sessionId = result.sessionId;
 					await persist( ( recorder ) => recorder.recordAgentSessionId( result.sessionId ) );
 
-					if ( result.type === 'max_turns' ) {
-						maxTurnsResult = {
-							numTurns: result.numTurns,
-						};
-						turnState.status = 'max_turns';
-					} else if ( result.interrupted ) {
+					if ( result.interrupted ) {
 						turnState.status = 'interrupted';
 					} else {
 						turnState.status = result.success ? 'success' : 'error';
@@ -546,30 +540,6 @@ export async function runCommand( options: {
 			ui.endAgentTurn();
 		}
 
-		if ( maxTurnsResult ) {
-			ui.showInfo(
-				sprintf(
-					/* translators: %d: number of turns used */
-					_n( 'Used %d turn', 'Used %d turns', maxTurnsResult.numTurns ),
-					maxTurnsResult.numTurns
-				)
-			);
-			const answer = await ui.askUser( [
-				{
-					question: __( 'Reached the turn limit. Continue?' ),
-					options: [
-						{ label: 'Yes', description: __( 'Resume where the agent left off' ) },
-						{ label: 'No', description: __( 'Stop here' ) },
-					],
-				},
-			] );
-			const choice = Object.values( answer )[ 0 ]?.toLowerCase();
-			if ( choice === 'yes' ) {
-				ui.addUserMessage( 'Continue' );
-				return runAgentTurn( 'Continue from where you left off.' );
-			}
-		}
-
 		// Skip the retry prompt when the UI has already surfaced a terminal
 		// error (e.g. AI usage cap). Retrying won't recover from a cap, and
 		// the user has already been told what to do next.
@@ -607,7 +577,6 @@ export async function runCommand( options: {
 
 		return {
 			status: turnState.status,
-			usage: maxTurnsResult,
 		};
 	}
 
@@ -617,7 +586,7 @@ export async function runCommand( options: {
 			ui.addUserMessage( options.initialMessage );
 			const result = await runAgentTurn( options.initialMessage );
 			const jsonStatus = result.status === 'interrupted' ? 'error' : result.status;
-			( ui as JsonAdapter ).emitTurnCompleted( jsonStatus, result.usage );
+			( ui as JsonAdapter ).emitTurnCompleted( jsonStatus );
 		} catch ( error ) {
 			process.exitCode = 1;
 			handleAgentTurnError( error );

eval/promptfoo.config.yaml

@@ -28,7 +28,6 @@ tests:
   - description: agent identifies as WordPress Studio AI
     vars:
       caseId: identity
-      maxTurns: 12
       timeoutMs: 60000
       prompt: In one short sentence, tell me who you are. Do not call any tools.
     assert:
@@ -53,7 +52,6 @@ tests:
   - description: agent calls site_create when asked to make a site
     vars:
       caseId: site-creation
-      maxTurns: 20
       timeoutMs: 120000
       askUserPolicy: allow_all
       prompt: |
@@ -85,7 +83,6 @@ tests:
   - description: single-page site build keeps every turn under 60s
     vars:
       caseId: single-page-build-turn-cadence
-      maxTurns: 80
       timeoutMs: 600000
       askUserPolicy: allow_all
       prompt: |