The latest articles on DEV Community by Jimmy Van Den Hoeck (@jimmy_vandenhoeck_5bcde). https://dev.to/jimmy_vandenhoeck_5bcde 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%2F4226431%2F52a28b59-c017-415e-b162-dce29fe5f724.png https://dev.to/jimmy_vandenhoeck_5bcde en Jimmy Van Den Hoeck Wed, 04 Nov 2026 14:28:30 +0000 https://dev.to/jimmy_vandenhoeck_5bcde/i-built-a-windows-trading-app-where-you-plug-in-any-llm-grok-chatgpt-claude-gemini-deepseek-13g https://dev.to/jimmy_vandenhoeck_5bcde/i-built-a-windows-trading-app-where-you-plug-in-any-llm-grok-chatgpt-claude-gemini-deepseek-13g <p>I'm the developer of Nova AI Trader, a Windows desktop app that trades on your own exchange account and lets you plug in your own AI model as extra advice per trade.</p> <h2> How it works </h2> <ul> <li>You connect your own exchange via API key. The app never holds your money.</li> <li>You pick a model: Grok, ChatGPT, Claude, Gemini, DeepSeek, or a local model through Ollama. API costs are on your own key.</li> <li>The model returns a strict JSON signal; position size, max loss and stop-loss are enforced in code, outside the model.</li> </ul> <h2> What was hard </h2> <ul> <li> <strong>Rate limits</strong> on both exchanges and LLM APIs, so we batch and cache market snapshots.</li> <li> <strong>Prompt guardrails</strong>: small models hallucinate tickers, so we use a fixed schema, an allowed-symbols list and temperature 0.</li> <li> <strong>Exchange API quirks</strong>: every exchange rounds lot sizes and reports errors differently.</li> </ul> <p>I'd love feedback, especially from people who run local models for agent-style decisions.</p> <p>Link: <a href="https://www.novatradingapp.com/ai-trader?utm_source=devto" rel="noopener noreferrer">https://www.novatradingapp.com/ai-trader?utm_source=devto</a> (paid app, €39/month or €390/year).</p> <p><em>Trading involves risk, you can lose your whole stake. Not financial advice.</em></p> showdev ai ollama crypto