The latest articles on Forem by Sueno (@sueno001). https://forem.com/sueno001 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3858349%2F48001744-c484-4901-926b-2715cc25e218.png https://forem.com/sueno001 en Sueno Thu, 02 Apr 2026 21:13:54 +0000 https://forem.com/sueno001/i-built-pythguard-a-real-time-defi-liquidation-shield-powered-by-pyth-network-2nbe https://forem.com/sueno001/i-built-pythguard-a-real-time-defi-liquidation-shield-powered-by-pyth-network-2nbe <p>Getting liquidated on a leveraged position is brutal, especially when you could have seen it coming. I built PythGuard to fix that.<br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fwfkg2qdem6kouoweuu9n.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fwfkg2qdem6kouoweuu9n.png" alt=" " width="800" height="432"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fk468u8eidv8n9issiemo.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fk468u8eidv8n9issiemo.png" alt=" " width="800" height="433"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fm54hyx2930z4e8mbhs0a.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fm54hyx2930z4e8mbhs0a.png" alt=" " width="800" height="433"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fmzmcfjvn2k4d8gkxe91a.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fmzmcfjvn2k4d8gkxe91a.png" alt=" " width="800" height="431"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5usgx509y712n9yxahw0.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5usgx509y712n9yxahw0.png" alt=" " width="800" height="433"></a></p> <p><strong>What it does:</strong><br> PythGuard monitors your leveraged positions in real-time and alerts you before you hit your liquidation price. You add a position (collateral asset, size, liquidation price), and it gives you a live health score, a visual price bar, and a countdown to liquidation in both $ and %.</p> <p><strong>What makes it different — it uses all three Pyth Network features:</strong></p> <p>🔹 <strong>Pyth Network Price Feeds</strong> — Live prices for 8 crypto assets (BTC, ETH, SOL, PYTH, BNB, XRP, DOGE, AVAX) via Hermes, updating every 3 seconds with confidence intervals shown on each position card.</p> <p>🔹 <strong>Pyth Network Pro</strong> — Commodity and FX feeds (Gold, WTI Crude, EUR/USD, GBP/USD) power a <strong>Macro Danger Score</strong> in the right panel. Gold surging + dollar strengthening has historically preceded crypto selloffs — this score watches those signals so you get a heads-up before the market moves against your position.</p> <p>🔹 <strong>Pyth Network Entropy</strong> — Every time you register a price alert, Pyth Entropy generates a tamper-proof receipt (sequence number + hash). This cryptographically proves your alert existed <em>before</em> the price moved.</p> <p><strong>⚠️ Risks to be aware of:</strong></p> <ul> <li> <strong>Oracle risk:</strong> PythGuard relies entirely on Pyth Network price feeds. If Pyth feeds are delayed, manipulated, or return stale data, liquidation alerts may fire late or not at all.</li> <li> <strong>No on-chain reading:</strong> Positions are entered manually — PythGuard does not connect to your actual on-chain positions. If you enter wrong numbers, the health score will be wrong.</li> <li> <strong>Browser storage only:</strong> Positions and alerts are stored in localStorage. Clearing your browser or switching devices loses all your data.</li> <li> <strong>Not financial advice:</strong> PythGuard is a monitoring tool, not a trading system. It does not execute any transactions on your behalf.</li> <li> <strong>Pyth Network smart contract risk:</strong> As with any protocol, Pyth's underlying contracts carry inherent smart contract risk despite audits.</li> </ul> <p><strong>Pyth Network Audit:</strong> <a href="https://github.com/pyth-network/audit-reports" rel="noopener noreferrer">https://github.com/pyth-network/audit-reports</a><br> (Most recent: September 2024 — conducted by independent third-party auditors)</p> <p><strong>Live demo:</strong> <a href="https://pythguard-mu.vercel.app/" rel="noopener noreferrer">https://pythguard-mu.vercel.app/</a></p> <p><strong>Tech stack:</strong> Next.js 14, TypeScript, Tailwind CSS — no backend, no wallet connection required.</p> <p>Built for the Pyth Community Hackathon 2026. Happy to answer questions about the Pyth Network integration — the Entropy receipt flow in particular was interesting to implement.</p> monitoring showdev sideprojects web3