Building SolanaSentinel: Pre-Signature CPI Firewall and DeFi Clearinghouse on Solana Devnet
This is a submission for the MLH x DEV Writing Challenge What I Built Halfway through testing a Solana swap router on Friday night, I realized how easy it is for an autonomous agent to sign away an entire SPL token account if a malicious Cross-Program Invocation (CPI) slips a TokenProgram::SetAuthority(AccountOwner) call into the instruction bundle. Most wallets show a balance delta preview, yet…
We haven't written up this one. Dev.to has the full story — the link below goes straight to it.
