# n8n

## AI Agent node

1. Add an **AI Agent** node and, under **Tool**, an **MCP Client Tool**.
2. **Endpoint**: `https://postflow.biz.id/api/mcp`. **Server Transport**: HTTP Streamable.
3. **Authentication**: Bearer Auth, with a PostFlow API key as the token. Use a **Read only** key for agents that only report.
4. **Tools to include**: all, or pick the ones the agent needs (for example `list_comments` and `reply_to_comment`).

## Fixed workflows

For steps that always run the same way (a new row in a sheet becomes a post), call the [REST API](/introduction/) with the
**HTTP Request** node instead. See [n8n, Make and Zapier](/guides/automation/).