Forks Quickstart

Tenderly Forks are a lightweight blockchain replica where you can run transaction simulations. You can base your Fork on one of Tenderly’s supported networks and any of the blocks in a specific network’s history. All transactions you simulate through Forks are recorded in an isolated timeline, and available in Tenderly Debugger.

You can use Forks through:

• The Fork UI for an IDE-like experience. Follow the Using Forks UI guide to get started.
• The Fork JSON RPC that allows you to use Forks as a lightweight blockchain provider. This way, you can:
  • Interact with Forks via Ethers.js. Follow the Using Forks with Ethers.js guide to learn more.
  • Integrate the RPC into a Hardhat project by using it as a network URL in hardhat.config. You can use that network to test your deployment scripts and/or run smart contract tests. Explore this example hardhat project for details.
  • Integrate the RPC in a dapp UI by using the Fork URL as a provider. See this example project.

Customizing Tenderly Fork

Additionally, you can do various custom actions on a Fork:

• Advance/mine a block (evm_increaseBlocks)
• Advance time on the Fork (setting the timestamp)
• Move the head of the Fork (evm_snapshot and evm_revert)
• Manage account balances (tenderly_setBalance and tenderly_addBalance)
• Override smart contract storage (tenderly_setStorageAt)