Overview - Uniblock Docs

Webhooks let you receive real-time notifications from Unified API whenever specific blockchain events occur, without needing to poll endpoints. They automatically send signed HTTP POST requests to your server for events like transactions, token transfers, NFTs, and new blocks, enabling fast and reliable event-driven workflows.

Supported Chains

List of all blockchain chains currently supported for webhooks across our providers:

Ethereum Mainnet
Ethereum Sepolia
Arbitrum Mainnet
Arbitrum Sepolia
Optimism Mainnet
Optimism Sepolia
Polygon Mainnet
Polygon Mumbai
Polygon Amoy
Zksync Mainnet
Zksync Sepolia
Base
Base Sepolia
Avalanche C-Chain
BNB Smart Chain Mainnet
BNB Smart Chain Testnet
Fantom Opera
Fantom Testnet
Gnosis
Gnosis Chiado Testnet
Solana

Endpoints

Endpoint	Description
`/webhook/contract-event`	Create a webhook that triggers on specific contract events.
`/webhook/{id}`	Modify an existing webhook.
`/webhook/address-activity`	Establish a webhook for tracking activities related to specified addresses.
`/webhook/solana-address-activity`	Set up a webhook specific to address activities on the Solana blockchain.

​Supported Chains

​Endpoints

Supported Chains

Endpoints