Łukasz Bałuniak

A paid AI service turning phone snapshots of products into studio-quality shots.

• Fire-and-forget: the API submits the job to the fal.ai queue and returns the status URL straight away, and the browser takes over polling — the serverless function never pays for waiting.
• Credits are deducted atomically (optimistic locking with retries) before generation — closing the gap that let several open tabs generate beyond the paid limit.
• Zod validation narrowed to URLs from the app's own storage, so the endpoint cannot be used to fetch arbitrary addresses server-side (SSRF).
• Autopay payment notifications (ITN) verified with a SHA-256 hash, answered in the XML format the operator requires.

Stack: Next.js 16 · TypeScript · Supabase · fal.ai · Autopay · PostHog · Vercel

A multi-agent AI decision system that traded real capital on Binance Spot.

• Five roles on three models at different price points: cheap models analyse every cycle, a pricier orchestrator settles only disagreements, and a unanimous, confident panel bypasses it entirely (Fast Path).
• The language model never places an order: its verdict passes through a deterministic guard layer — stop loss, trailing stop, cooldown and daily loss limits.
• The “umbrella” doctrine: capital gating applies to entries only and exits are never blocked — learned from the bot once getting locked into a losing position.
• A hard 8.5 s limit on the analyst panel, memory built from FIFO-paired trades injected into the prompt, and all exchange traffic behind a single adapter module.

Stack: Next.js 16 · TypeScript · Supabase · Claude · Gemini · Binance Spot API · Telegram Bot API

An AI-assisted stock and sales system for reselling return pallets.

• Incremental manifest scoring with concurrency control, staying inside the 60-second serverless function limit.
• A manifest parser for PDF and XLSX files from different carriers, with header auto-detection.
• The write layer skips missing columns on its own, so the UI works before the database migration lands.
• Photo bundles generated server-side to get around CORS; goods intake designed mobile-first.

Stack: Next.js 16 · TypeScript · Tailwind CSS v4 · Supabase · Gemini (Vercel AI SDK) · Vercel

This site: portfolio, AI order builder and automated SEO content.

• Order builder: Claude drafts the questions through structured output with a Zod schema, and a script takes over on failure; rate limiting and traffic-source attribution in the email.
• Content pipeline: Search Console and GA4 data pick the topic, Claude drafts it in two languages, and the draft arrives as a pull request flagged as draft — a human approves publishing.
• Google API access through a service account with a hand-signed JWT, without the heavy client library.
• Markdown blog with paired translations, hreflang, sitemap and structured data; the language version is chosen from geolocation in the proxy.

Stack: Next.js 16 · TypeScript · Claude · Vercel AI SDK · Resend · Google APIs · GitHub API · Vercel Cron