n8n-io/n8n · error · Error

LLM does not support bindTools - cannot use tools for node d

Error message

LLM does not support bindTools - cannot use tools for node discovery

What it means

Error "LLM does not support bindTools - cannot use tools for node discovery" thrown in n8n-io/n8n.

Source

Thrown at packages/@n8n/ai-workflow-builder.ee/src/code-builder/handlers/chat-setup-handler.ts:219

		return generateWorkflowCode({
			workflow: currentWorkflow,
			executionSchema: payload.workflowContext?.executionSchema,
			executionData: payload.workflowContext?.executionData,
			expressionValues: payload.workflowContext?.expressionValues,
			valuesExcluded: payload.workflowContext?.valuesExcluded,
			pinnedNodes: payload.workflowContext?.pinnedNodes,
		});
	}

	/**
	 * Bind tools to LLM
	 *
	 * @returns LLM with tools bound, typed for use with AgentIterationHandler
	 */
	private bindToolsToLlm(textEditorEnabled: boolean, hasPlanOutput: boolean): LlmWithTools {
		if (!this.llm.bindTools) {
			throw new Error('LLM does not support bindTools - cannot use tools for node discovery');
		}

		// When an approved plan is provided, exclude get_suggested_nodes
		// because the plan already contains curated node suggestions per step
		let tools: Array<
			| StructuredToolInterface
			| typeof TEXT_EDITOR_TOOL
			| typeof VALIDATE_TOOL
			| typeof BATCH_STR_REPLACE_TOOL
		> = hasPlanOutput ? this.tools.filter((t) => t.name !== 'get_suggested_nodes') : this.tools;

		if (textEditorEnabled) {
			tools = [...tools, TEXT_EDITOR_TOOL, VALIDATE_TOOL, BATCH_STR_REPLACE_TOOL];
		}

		return this.llm.bindTools(tools) as LlmWithTools;
	}

View on GitHub (pinned to 5ac6606e81)

When it happens

Trigger: Thrown at packages/@n8n/ai-workflow-builder.ee/src/code-builder/handlers/chat-setup-handler.ts:219 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of n8n-io/n8n@5ac6606e81 (2026-08-12). Data as JSON: /api/errors/243404266a364643. Report an issue: GitHub.