Create Datadog Synthetic API tests programmatically via the API to monitor critical endpoints on a schedule

Steps

1. Authenticate API calls with a Datadog API key and application key passed as headers DD-API-KEY and DD-APPLICATION-KEY
2. Send a POST request to the Synthetics tests endpoint with a JSON body specifying type: api, subtype: http, and a config object containing the request method, URL, assertions, and headers
3. Define assertions in the config.assertions array, each with a type (e.g., statusCode, responseTime, body), operator (e.g., is, lessThan, contains), and target value
4. Set options.tick_every to the check interval in seconds (e.g., 60 for one-minute checks) and locations to an array of Datadog managed or private location identifiers
5. Use the returned public_id from the creation response to later retrieve results, pause, resume, or delete the test via the corresponding API endpoints
6. Manage tests as code using the Datadog Terraform provider (datadog_synthetics_test resource) or the datadog-ci CLI to sync test definitions from a Git repository