AI가 답변할 수 없을 때 인간의 도움 요청

• •Slack Bot Token 또는 Webhook URL
• •OpenAI API Key

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      "parameters": {
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        "content": "### Sub-workflow: Custom tool\nThe agent above can call this workflow. It checks if the user has supplied an email address. If they haven't it prompts them to provide one. If they have, it messages a customer support channel for help."
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        "content": "### Main workflow: AI agent using custom tool"
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        "content": "**Set your credentials**"
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        "content": "## Try it out\n\nSelect **Chat** at the bottom and enter:\n\n_Hi! Please respond to this as if you don't know the answer to my query._"
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        "content": "## Next steps\n\nLearn more about [Advanced AI in n8n](https://docs.n8n.io/advanced-ai/)"
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          "mode": "list",
          "value": "gpt-4o-mini"
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