Currently live on Ethereum, Polygon, Solana, Optimism, Arbitrum, Avalanche, Gnosis, Flow, and testnets

The webhook API enables clients to subscribe to Webhook Events. It complements the existing REST API https://simplehash.readme.io/reference/overview by allowing users to receive notifications when interesting event occurs. Webhooks eliminate the need for clients to continuously poll via the existing REST API to check for event occurrence, saving significant bandwidth.

Domains

The domain & endpoint for creating, updating and managing webhooks for mainnet & testnet events is https://api.simplehash.com/webhook_api


Authentication

All webhook API endpoints require use of an API Key. See https://simplehash.readme.io/reference/overview#authentication for details.


Subscriptions

By default, up to 10 webhook subscriptions can be active for a given organization. If you require more than this, please reach out to us at [email protected]