# Environment Clients can make requests to either the `sandbox` or `production` environment by using the header `Ten99Policy-Environment` and specifying either `sandbox` or `production`. The default is `sandbox`. ## Example ```curl curl \ -X GET https://api.1099policy.com/api/v1/contractors \ -H "Authorization: Basic t9k_test_wvnsjtZ8aMlbfGbIm0Lc0" \ -H "Ten99Policy-Environment: production" ```