OpenAI assistant with custom tools

n8n template #2025

Summary

This workflow shows how you can get your OpenAI assistant to call an n8n workflow as a tool. Since you can put almost any functionality in an n8n workflow, this means you can give your assistant access to almost any data source. Note that to use this template, you need to be on n8n version 1.19.4 or later.

Hand off to your agent

Prompt

Help me set up the n8n workflow "OpenAI assistant with custom tools" (https://n8n.io/workflows/2025). It uses: Code, Code Tool, Call n8n Workflow Tool. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.

Paste into Claude Code and it will do the rest.

Apps and nodes

Code Code Tool Call n8n Workflow Tool

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