The webhook API is similar to the existing SimpleHash API https://simplehash.readme.io/reference/overview, each having a separate endpoint for managing webhooks for
Testnet chain events.
Webhooks for Mainnet chains are called from the regular API domain at https://api.simplehash.com/webhook_api while testnet chains are called from https://api-testnets.simplehash.com/webhook_api. Each endpoint functions in the same manner for both the mainnet and testnet environments.
All webhook API endpoints require use of an API Key. See https://simplehash.readme.io/reference/overview#authentication for details.