WalletWarden

WalletWarden is a browser-based transaction firewall that explains what a wallet signature will actually do before you approve it. Instead of showing raw calldata or vague “Approve” prompts, it simulates the transaction, flags risky patterns (unlimited approvals, delegatecalls, suspicious token drains), and summarizes outcomes in plain language. It also monitors existing allowances and alerts users when a dApp gains dangerous spending rights, with one-click revoke suggestions. The product is built for everyday DeFi/NFT users who keep getting phished or tricked by lookalike sites and malicious contracts. This is not a magic anti-scam tool: it won’t catch every new exploit, and sophisticated attacks can evade heuristics. But it materially reduces the most common, repeatable losses by making approvals understandable and by preventing “infinite allowance” footguns. Works as a web app + browser extension, with optional mobile alerts.