AI: Conversational agent with custom tool written in JavaScript

n8n template #1963

Summary

This workflow implements a custom tool via JavaScript code which returns a random color to users and excludes the given colors. 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 "AI: Conversational agent with custom tool written in JavaScript" (https://n8n.io/workflows/1963). It uses: AI Agent, OpenAI Chat Model, Code 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

AI Agent OpenAI Chat Model Code Tool

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