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Base URL

useSend’s API is built on REST principles and is served over HTTPS. To ensure data privacy, unencrypted HTTP is not supported. The Base URL for all API endpoints is:
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Authentication

Authentication to Usend’s API is performed via the Authorization header with a Bearer token. To authenticate, you need to include the Authorization header with the word Bearer followed by your token in your API requests like so:
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You can create a new token/API key under your useSend Developer Settings.