Call an HTTP API and Protect Credentials

Today's Goals

1. Read HTTP Request inputs and responses.
2. Keep secrets in credentials rather than workflow text.
3. Distinguish network, auth, and invalid-data failures.

Many automations connect services through an API. The HTTP Request node is the general-purpose connector when a dedicated integration is unavailable or unsuitable. A successful call must satisfy more than “the server responded.” Today you will design a read-only ticket lookup using fictional responses.

Plain-Language Walkthrough

Write the request contract before configuring the node

A request contract names the method, destination, authentication, allowed input, expected response, timeout, and side effect. For this exercise, the method is GET, the path conceptually asks for ticket NM-101, and the response should include the ticket ID, message text, language, and update time. Use a mock response or an approved training endpoint. Do not paste a production support URL or customer record into the course exercise. The HTTP Request node reference describes current options; follow your installed version's labels.

The URL comes from trusted configuration, not directly from arbitrary ticket text. If a ticket contains a URL, do not hand it to an HTTP node as the next destination. That would let untrusted content select where the workflow sends its request. The ticket ID may be used as a path parameter only after checking its format and encoding it safely. In this course, define an ID pattern and reject values outside it before any request.

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