Developers building DeFi products or integrating DeFi mechanics into existing projects — wallets, swap interfaces, connectors, DeFi products, games, and similar — are all eligible to apply.
Eligibility isn't strictly limited to professional DeFi developers. Independent creators, "vibe coders", builders working on AI agents, automation, analytics tools, and other adjacent areas can also apply, as long as the project creates value for the STON.fi protocol.
If you're unsure whether your project fits, it's worth reaching out to the grants team before applying — the eligibility framing intentionally leaves room for new and unusual ideas.