n8n内でMCPサーバーとChatGPTを使ってQuickBooks Onlineの顧客データとの対話

• •OpenAI API Key

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        "content": "# Workflow description\n\n⚠️ Important: Set the **MCP Client Tool** `sseEndpoint` to your actual MCP server URL. You can copy this URL from the **MCP Server - Claude Desktop Bridge** node once it is running.\n\n## Steps\n1) **Public Chat Trigger** - receives chat messages.\n2) **AI Agent Orchestrator** - coordinates tool calls and replies.\n3) **LLM - OpenAI Chat (gpt-4.1-mini)** - the language model.\n4) **AI Tool - QBO Customers** - QuickBooks customers tool.\n5) **MCP Server - Claude Desktop Bridge** - exposes tools as MCP.\n6) **MCP Client Tool** - must point to your actual SSE endpoint.\n\n## Setup\n- Connect OpenAI and QuickBooks credentials.\n- Copy the correct SSE URL from MCP Server Trigger into MCP Client Tool.\n- Add auth if exposing the chat publicly.\n\n## Extend\n- Add more QBO tools (invoices, payments, items).\n- Expose other systems to Claude via MCP.\n- Add guardrails and permissions for security."
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