OP Avail Testnet


OP Avail testnet is an OP stack powered L2 that uses Avail as its data availability layer.

In OP Avail, L2 transaction data are written to Avail instead of Ethereum calldata. The resulting unique transaction reference blob key is then written to Ethereum calldata. By doing so, the cost of publishing on Ethereum becomes relatively negligible, even when the actual data is megabytes in size. The rollup node will then be able to retrieve the data commitments from the calldata on Ethereum, and then retrieve the transaction data from Avail.

To learn more about OP Avail, refer to the guide Build a Rollup With Avail.

OP Avail Testnet info


Network Name

OP Avail Testnet

Chain ID


Currency Symbol


Settlement Layer

Sepolia Testnet

Rollup Info Page


Public RPC URL


Short Guide

  1. To start using the network, you can add it to your wallet by visiting the Rollup Info Page.

  2. Next, visit the bridge interface to bridge your Sepolia Testnet ETH to OP Avail testnet.

You can obtain Sepolia Testnet ETH from public faucets like https://sepoliafaucet.com/ or https://www.sepoliafaucet.io/.

  1. Once deposit is initialised, it will take ~1min for the deposit to arrive on OP Avail Testnet. After which, you can use the network to start deploying your contracts.

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