Token Allowance Checker
Ensure your crypto assets are secure by reviewing token allowances with ease!
About
Why are you participating for Based SEA? I am participating in Based SEA because security in the cryptocurrency space is becoming more critical, especially as blockchain technology grows in adoption. In SEA, there is a growing interest in crypto, but many users are unaware of how smart contracts can potentially misuse their token permissions. I believe my Token Allowance Checker project can raise awareness and give users a simple way to safeguard their assets by allowing them to monitor and control smart contract allowances, all while contributing to the vibrant developer community in SEA. Additional Features During the buildathon, I added: Custom Alerts: Users can set up alerts for when certain allowances are created or modified, giving them better control over their token permissions. Multi-Network Support: The app was expanded to support multiple blockchain networks beyond Ethereum, allowing users to track token allowances on various chains. Allowance History: A log that shows the history of allowances granted or revoked over time.
How it's made
What challenges are you focusing on? The Token Allowance Checker addresses several security challenges: Token Vulnerability: Many users grant unlimited token allowances to smart contracts without realizing the risks involved. This can lead to loss of assets if the contract is compromised. Asset Management: Users often forget which smart contracts have permission to access their tokens, making it difficult to manage or revoke allowances efficiently. Security Awareness: By providing a tool that highlights allowances, this project helps raise awareness of security risks in decentralized finance (DeFi) among the crypto community. How does your submission address this challenge? The Token Allowance Checker helps users monitor and manage which smart contracts have access to their tokens. By connecting their wallet, users can view a list of allowances they’ve granted, along with the ability to revoke them if necessary. This not only improves asset security but also simplifies the management of permissions for users who interact with multiple decentralized applications (dApps) and smart contracts. Project Description: Wallet Integration: The user connects their crypto wallet, and the tool automatically pulls data about their token allowances. Token Allowance Overview: The app shows which smart contracts have been granted access to their tokens, along with the amount and type of token. Revoke Permissions: Users can instantly revoke token allowances to prevent unauthorized or unintended access. Real-Time Updates: Data is fetched and updated in real-time to reflect the latest permissions. Potential Impact: Improved Security: By making it easy for users to review and revoke token allowances, the project helps to prevent unauthorized access to their assets, increasing overall wallet security. User Empowerment: It gives users full control over their tokens, helping them better manage permissions and protect their funds from risks. Education: The tool raises awareness about the importance of monitoring token allowances, contributing to the overall understanding of security in DeFi. Challenges we ran into Fetching On-Chain Data: Pulling real-time data about token allowances from the blockchain was technically challenging due to variations across different token standards (ERC-20, ERC-721, etc.). Solution: I utilized the Ethers.js library to standardize data fetching across different tokens and improve compatibility. User Experience: Displaying complex token permission data in a simple and user-friendly way was challenging, especially for users unfamiliar with technical blockchain concepts. Solution: I implemented clear, concise UI elements and tooltips to help users understand each token allowance and what it means. Security Concerns: Ensuring that users can revoke permissions safely without interfering with legitimate dApps was crucial. Solution: I added a confirmation step before revoking permissions to ensure the user understands the action they’re taking.