n8n-io/n8n · error · Error

LLM does not support bindTools

Error message

LLM does not support bindTools

What it means

Error "LLM does not support bindTools" thrown in n8n-io/n8n.

Source

Thrown at packages/@n8n/ai-workflow-builder.ee/src/code-builder/triage.agent.ts:196

	private readonly logger?: Logger;

	constructor(config: TriageAgentConfig) {
		this.llm = config.llm;
		this.assistantHandler = config.assistantHandler;
		this.buildWorkflow = config.buildWorkflow;
		this.logger = config.logger;
	}

	/**
	 * Run the triage agent loop: LLM -> tool call -> execute -> ToolMessage -> loop.
	 * The loop is tool-agnostic — all tool knowledge lives in executeTool().
	 * Yields `StreamOutput` chunks and returns the outcome.
	 */
	async *run(params: TriageAgentParams): AsyncGenerator<StreamOutput, TriageAgentOutcome> {
		const { payload, userId, abortSignal, sdkSessionId, conversationHistory } = params;

		if (!this.llm.bindTools) {
			throw new Error('LLM does not support bindTools');
		}
		const llmWithTools = this.llm.bindTools([ASK_ASSISTANT_TOOL, BUILD_WORKFLOW_TOOL]);

		const systemContent = buildTriagePrompt(conversationHistory, payload.workflowContext);

		const messages: BaseMessage[] = [
			new SystemMessage(systemContent),
			new HumanMessage(payload.message),
		];

		const ctx = { userId, payload, abortSignal };
		const state: TriageAgentState = { sdkSessionId };

		let reachedMaxIterations = true;
		let responseHandled = false;

		for (let iteration = 0; iteration < MAX_TRIAGE_ITERATIONS; iteration++) {
			const response: AIMessageChunk = await llmWithTools.invoke(messages, {

View on GitHub (pinned to 5ac6606e81)

When it happens

Trigger: Thrown at packages/@n8n/ai-workflow-builder.ee/src/code-builder/triage.agent.ts:196 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/00a8faad83358083. Report an issue: GitHub.