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wiki/concepts/Webhook.md
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title: "Webhook"
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type: concept
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tags: [n8n, trigger, http]
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date: 2026-04-17
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---
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## Definition
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n8n 接收外部 HTTP POST 请求的触发器,使工作流能够响应来自外部系统的请求。
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## How It Works
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1. 在 n8n 工作流中添加 Webhook 触发器节点
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2. 配置唯一的工作流路径(如 `webhook/my-workflow`)
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3. 外部系统通过 `POST http://n8n:5678/webhook/my-workflow` 发起请求
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4. n8n 接收 JSON payload 并执行工作流
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## Use Cases
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- AI Agent 调用外部 API(通过 webhook 代理)
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- 接收 GitHub/GitLab Webhook 通知
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- 接收表单提交
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- 接收 Twilio/SendGrid 等服务的回调
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## Aliases
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- Webhook Trigger
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- Incoming Webhook
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