rkalis / Revoke.cash
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Do you want to swap 10 DAI for ETH? Sure thing, we'll just need your approval to spend a BAJILLION DOLLARS!
Do you ever feel uneasy about the different dapps that you gave approval to spend ERC20 tokens from your account? revoke.cash allows you to inspect all the contracts you've approved to spend money on your behalf, and revoke their access for the ones you no longer need. If you don't want to completely revoke access, it's also possible to update the amount they are allowed to spend instead.
This repository also includes the dapp-contract-list, which is a mapping of smart contract addresses to the corresponding application. This allows revoke.cash to display application names like Aave or Compound instead of their smart contract addresses. This list can be used by any other application. The name mapping for an address can be accessed through either of these URLs:
https://raw.githubusercontent.com/rkalis/revoke.cash/master/public/dapp-contract-list/{chain}/{address}.jsonhttps://revoke.cash/dapp-contract-list/{chain}/{address}.json
Revoke.cash and the dapp-contract-list are set up to work with any EVM-based chain that can use Metamask. This includes ETH mainnet and testnets, Binance Smart Chain, Polygon chains (prev. Matic), xDAI and more.
If you want to learn more about (unlimited) ERC20 allowances, I wrote an article on my blog: Unlimited ERC20 allowances considered harmful.
Running locally
git clone [email protected]:rkalis/revoke.cash.git
cd revoke.cash
yarn
yarn start
Credits
Website created by Rosco Kalis after discussing the idea with Paul Berg at Devcon 5 in Osaka. Uses ethers.js for all Ethereum-related operations. Filters out unverified tokens using the Kleros T2CR. Built with React, Bootstrap and TypeScript.