# Working with Synthetic API Test Synthetic API Test helps you proactively monitor your most important services so they are available anytime and anywhere. API Test supports monitoring of your services using many different protocols including: * **HTTP(s)** : helps you test websites or services running with HTTP(s) * **TCP** : helps you test services running TCP * **Ping** : helps you check servers or devices with Ping If your service is down or responding slower than you expected, API Test can alert you with channels that Notification supports such as Email, SMS, Slack or Telegram. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.vngcloud.vn/vng-cloud-document/vmonitor/dashboards/synthetics/lam-viec-voi-synthetic-api-test.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.