fix(ai-builder): Updating stream recursion limit and removing tool node static parameter validation (#23023)

packages/@n8n/ai-workflow-builder.ee/src/constants.ts

@@ -51,3 +51,6 @@ export const MAX_NODE_EXAMPLE_CHARS = 5000 * AVG_CHARS_PER_TOKEN_ANTHROPIC;
 export const MAX_BUILDER_ITERATIONS = 30;
 export const MAX_CONFIGURATOR_ITERATIONS = 30;
 export const MAX_DISCOVERY_ITERATIONS = 50;
+export const MAX_MULTI_AGENT_STREAM_ITERATIONS =
+	MAX_BUILDER_ITERATIONS + MAX_CONFIGURATOR_ITERATIONS + MAX_DISCOVERY_ITERATIONS;
+export const MAX_SINGLE_AGENT_STREAM_ITERATIONS = 50;

packages/@n8n/ai-workflow-builder.ee/src/validation/checks/tools.ts

@@ -3,7 +3,6 @@ import type { INodeTypeDescription } from 'n8n-workflow';
 import type { SimpleWorkflow } from '@/types';
 
 import type { SingleEvaluatorResult } from '../types';
-import { nodeParametersContainExpression } from '../utils/expressions';
 import { isTool } from '../utils/is-tool';
 
 const toolsWithoutParameters = [
@@ -39,16 +38,6 @@ export function validateTools(
 					description: `Tool node "${node.name}" has no parameters set.`,
 					pointsDeducted: 20,
 				});
-				continue;
-			}
-
-			if (!nodeParametersContainExpression(node.parameters)) {
-				violations.push({
-					name: 'tool-node-static-parameters',
-					type: 'major',
-					description: `Tool node "${node.name}" has no expressions in its parameters. This likely means it is not using dynamic input.`,
-					pointsDeducted: 20,
-				});
 			}
 		}
 	}

packages/@n8n/ai-workflow-builder.ee/src/validation/types.ts

@@ -6,6 +6,7 @@ export type ProgrammaticViolationType = 'critical' | 'major' | 'minor';
 
 export const PROGRAMMATIC_VIOLATION_NAMES = [
 	'tool-node-has-no-parameters',
+	// this validation has been removed for now as it was throwing a lot of false positives
 	'tool-node-static-parameters',
 	'agent-static-prompt',
 	'agent-no-system-prompt',

packages/@n8n/ai-workflow-builder.ee/src/workflow-builder-agent.ts

@@ -18,6 +18,8 @@ import {
 	DEFAULT_AUTO_COMPACT_THRESHOLD_TOKENS,
 	MAX_AI_BUILDER_PROMPT_LENGTH,
 	MAX_INPUT_TOKENS,
+	MAX_MULTI_AGENT_STREAM_ITERATIONS,
+	MAX_SINGLE_AGENT_STREAM_ITERATIONS,
 } from '@/constants';
 import { createMainAgentPrompt } from '@/prompts/legacy-agent.prompt';
 import { trimWorkflowJSON } from '@/utils/trim-workflow-context';
@@ -515,7 +517,9 @@ export class WorkflowBuilderAgent {
 		const streamConfig = {
 			...threadConfig,
 			streamMode: ['updates', 'custom'] as const,
-			recursionLimit: 50,
+			recursionLimit: payload.featureFlags?.multiAgent
+				? MAX_MULTI_AGENT_STREAM_ITERATIONS
+				: MAX_SINGLE_AGENT_STREAM_ITERATIONS,
 			signal: abortSignal,
 			callbacks: this.tracer ? [this.tracer] : undefined,
 			metadata: this.runMetadata,