The latest articles on DEV Community by rkang30 (@rkang30). https://dev.to/rkang30 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F212795%2F74c3a50f-b621-4962-8985-4f4fe933676d.png https://dev.to/rkang30 en rkang30 Thu, 13 Aug 2026 21:39:00 +0000 https://dev.to/rkang30/i-built-a-free-open-source-trading-bot-starter-nextjs-1m9n https://dev.to/rkang30/i-built-a-free-open-source-trading-bot-starter-nextjs-1m9n <p>A minimal, open-source trading bot built on the Picckles Signals API — a read-only REST API for stock trading signals. It's Next.js (App Router) + TypeScript, and deploys to Vercel with a daily cron out of the box.</p> <h2> What it does </h2> <p>The bot runs on a daily tick that:</p> <ul> <li>Checks the API for SELL/HOLD decisions on any open positions</li> <li>Pulls today's BUY signals, sized to your budget</li> <li>Persists state to Upstash Redis</li> <li>Shows everything on a dashboard — open positions, trade history, and a manual run trigger</li> </ul> <p>It ships in <strong>paper-trading mode by default</strong>. Wiring up a real broker is a single function — <code>placeOrder</code> in <code>src/lib/bot.ts</code> — everything else stays the same.</p> <h2> The signals </h2> <p>Two strategies are available out of the box:</p> <ul> <li> <code>double7-guarded</code> (default) — buys strong uptrends on short-term lows, with a VIX-based crash filter. Typical hold: 2–3 weeks.</li> <li> <code>rs-pullback</code> — buys relative-strength leaders during fast dips. Typical hold: 2–5 days.</li> </ul> <p>Signals are the same for every subscriber on a given plan — no personalization, nothing account-specific, just "here's what the strategy says to do today":</p> <p><code>\</code><code>javascript<br> const res = await fetch(<br> "https://picckles.com/api/v1/signals/double7-guarded?budget=200",<br> { headers: { Authorization:</code>Bearer ${KEY}` } }<br> );<br> const feed = await res.json();</p> <p>for (const s of feed.entries) {<br> console.log(<code>BUY ${s.suggestedQuantity} ${s.symbol} @ ~$${s.price}</code>);<br> }<br> `<code>\</code></p> <h2> Why I built it </h2> <p>I've been trading these strategies on my own account and wanted something a developer could clone and have paper-trading running in a few minutes — without writing their own signal generation, position sizing, or scheduling from scratch.</p> <p>Setup needs a Picckles API key (free tier available) and an Upstash Redis instance — that's it.</p> <h2> Links </h2> <ul> <li>Repo: <a href="https://github.com/rkang30/open-trade-bot" rel="noopener noreferrer">https://github.com/rkang30/open-trade-bot</a> </li> <li>API docs: <a href="https://picckles.com/api-docs" rel="noopener noreferrer">https://picckles.com/api-docs</a> </li> </ul> <p>Would love feedback on the architecture, or holes in the strategies themselves — happy to answer questions in the comments.</p> nextjs opensource typescript webdev