Compete to solve challenges with the least gas
Intermediate14h1–2
FoundryNext.jsPostgres
16/20Practise fixing real vulnerability patterns with instant feedback.
Build Solidity Bug-Fix Tutor for developers learning smart contracts in ~16h with 1–2 people. Stack: Foundry + Slither + LLM.
Why it wins: Education plus security tooling.
| Tech | Role | |
|---|---|---|
| Foundry | Contract testing + deploy | Chain |
| Slither | Contract static analysis | Tool |
| LLM | Language model | AI |
Open-source projects you can build on. Links checked 2026-10-31.
Compete to solve challenges with the least gas
Check an upgradeable contract change for storage layout breaks
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