The latest articles on Forem by EUNTAE JANG (@soulmaten7). https://forem.com/soulmaten7 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%2F3853696%2F28ec0604-661a-463f-b0d9-4ac975a37423.png https://forem.com/soulmaten7 en EUNTAE JANG Tue, 31 Mar 2026 14:36:12 +0000 https://forem.com/soulmaten7/i-built-a-free-customs-calculation-platform-with-140-features-240-countries-1m54 https://forem.com/soulmaten7/i-built-a-free-customs-calculation-platform-with-140-features-240-countries-1m54 <h2> Why I built POTAL </h2> <p>Customs calculation infrastructure shouldn't cost $4,000/mo. I compiled every feature from 10 competitors — about 140 in total. The most feature-rich platform has ~30 features.</p> <p>POTAL offers all 140 features for free. Forever.</p> <h2> For developers </h2> <ul> <li>REST API + SDKs (Node.js, Python)</li> <li>AI Agent Integration (ChatGPT, Claude, Gemini via MCP)</li> <li>Batch classification (bulk processing)</li> <li>240 countries, 51 languages</li> <li>WCO GRI classification rules in code</li> </ul> <h2> Key features </h2> <p>HS Code classification (AI + image), Total Landed Cost, FTA origin determination, sanctions screening, denied party screening, export controls, de minimis thresholds, customs document generation, real-time currency conversion, dashboard + analytics.</p> <p>Check it out: <a href="https://potal.app" rel="noopener noreferrer">potal.app</a><br> Feedback: <a href="https://potal.app/community" rel="noopener noreferrer">potal.app/community</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%2Fg0grgaf1njb7mb19ng2n.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%2Fg0grgaf1njb7mb19ng2n.png" alt=" " width="700" height="366"></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%2F04vnol246z8x3gcv16hh.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%2F04vnol246z8x3gcv16hh.png" alt=" " width="800" height="686"></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%2Fwltg0gynqgikre0h3wix.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%2Fwltg0gynqgikre0h3wix.png" alt=" " width="800" height="674"></a></p> tradetech opensource webdev api