{"slug": "building-the-credit-system-for-my-ai-prompt-optimizer", "title": "Building the Credit System for My AI Prompt Optimizer", "summary": "A developer built a credit management system for an AI Prompt Optimizer, implementing plan-based credit allocation, automatic daily resets, and PostgreSQL-based credit deduction. The system integrates with Next.js and Supabase, and the developer learned about PostgreSQL functions, triggers, and row-level security during the process.", "body_md": "Today I completed one of the core backend features of my AI Prompt Optimizer: the credit management system.\n\nAt first, I thought it would be as simple as decrementing a counter. It turned out to be much more than that.\n\nWhat I implemented\n\nPlan-based credit allocation (Free & Pro ready)\n\nAutomatic daily credit reset for free users\n\nDatabase-level credit deduction using PostgreSQL functions\n\nCredit validation before processing optimization requests\n\nProper handling when users run out of credits\n\nIntegrated everything with Next.js and Supabase\n\nWhat I learned\n\nBuilding a SaaS isn't just about AI models or UI. A lot of the complexity comes from business logic.\n\nWhile working on this feature, I learned more about:\n\nPostgreSQL Functions\n\nTriggers\n\nForeign Keys\n\nRow Level Security (RLS)\n\nSupabase RPC\n\nDesigning a scalable credit system\n\nIt took several iterations and a lot of debugging, but seeing everything work together was worth it.\n\nNext up: payment integration, history improvements, and preparing for the beta launch.\n\nBuilding in public, one feature at a time. 🚀", "url": "https://wpnews.pro/news/building-the-credit-system-for-my-ai-prompt-optimizer", "canonical_source": "https://dev.to/sayyed_amaanali_8633c4ce/building-the-credit-system-for-my-ai-prompt-optimizer-59ee", "published_at": "2026-07-12 04:50:50+00:00", "updated_at": "2026-07-12 05:12:57.146884+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "ai-products"], "entities": ["Supabase", "Next.js", "PostgreSQL"], "alternates": {"html": "https://wpnews.pro/news/building-the-credit-system-for-my-ai-prompt-optimizer", "markdown": "https://wpnews.pro/news/building-the-credit-system-for-my-ai-prompt-optimizer.md", "text": "https://wpnews.pro/news/building-the-credit-system-for-my-ai-prompt-optimizer.txt", "jsonld": "https://wpnews.pro/news/building-the-credit-system-for-my-ai-prompt-optimizer.jsonld"}}