Sparrow Universal

Advancement through Precision

Our Work

ECHO

AI Short Film

She doesn't know how long she's been fighting. They come one after another — masked, silent, mirroring her every move. Each time she defeats one, she finds something that shouldn't be there.

Watch on YouTube →

Don Cookie

AI Cinematic Series

A Maltipoo. A stolen recipe. An empire built on kibble. The most dramatic dog saga on the internet. Created with AI. Frame by frame. 54 episodes and counting.

Watch on TikTok →

Studio Site · Single-file Build

The site you're on. Cinematic dark theme, Cormorant Garamond + Libre Franklin, single-file HTML / CSS / JS — no bundler, no framework, no build step. Designed, written, and shipped solo as the public face of the studio.

View Studio Site →

Sparrow Aesthetics

Aesthetic Studio · Ljubljana

Premium minimal-luxury aesthetic studio site. Single-file HTML / CSS / JS, mobile-first, WebP gallery (8× compression vs originals), GDPR + cookie policy + treatment consent forms. Live on Netlify. Built end-to-end as sole developer.

View Site →

ASDEA d.o.o.

Transport & Relocation

Bilingual (Slovenian / English) marketing site for a Slovenian transport and relocation business. Single-file build, zero bundler, deployed to Netlify. Shipped end-to-end as the sole developer — copy, design, and production handover.

View Site →

Legionela Tracker Compliance SaaS

Legionela Tracker

SaaS · Compliance · Slovenia

Full-stack compliance SaaS — digital Legionella water safety tracker for Slovenian facilities. Automated deadline alerts, inspector-ready reports, multi-tenant architecture. Built, deployed, and serving real inspections. Our flagship SaaS product.

View Product → Get a Demo →

Live Case Study

MS Sparrow Hostel

Automation · Outreach · Intelligence · Ljubljana

28-bed hostel running on full automation — daily morning briefings, automated cold outreach to sports clubs and agencies, AI email triage, competitor price monitoring, and event-driven pricing. All built with our own systems.

View Hostel → See Our Services →

Engineering & Tooling

Production agents, browser extensions, content pipelines, and developer tools — shipped solo, running daily.

RLS

RLS Drift Watchdog

Agent · Read-only by Design

Daily 06:30 agent that snapshots pg_policies, pg_tables-without-RLS, and Supabase advisor lints across two projects. Read-only by design — dedicated revocable PAT plus an assertReadOnlySql() guard that rejects non-SELECT, multi-statement, and write-verb queries before they leave the script. Emails only on non-empty diff.

SupabaseNode.jsCronResend

Cookie Episode Pipeline

Pipeline · LLM Orchestration

Single CLI command takes an image prompt + motion prompt, generates a 4K frame via Gemini Nano Banana direct (€0.08 / image), then a 5–10s clip via Higgsfield Kling 3.0 pro. ~29 credits per 10s episode. Migrated from vendor UI to CLI for batch-ability — cost cut verified by direct billing audit, not vendor marketing.

BashGemini APIHiggsfield CLI

ChatFolders

Chrome MV3 · Published

Chrome extension that organises ChatGPT and Claude conversations into folders, with drag-and-drop, search, and local-only storage. Published to the Chrome Web Store, April 2026. Manifest V3, content scripts, chrome.storage API, custom UI overlay.

Chrome Web StoreManifest V3Vanilla JS

ReviewReply AI

Chrome MV3 · Published

Chrome extension that drafts professional review replies on Google Business and Booking.com using a user-supplied LLM API key. Published to the Chrome Web Store, April 2026. Tested live against the 414+ Booking.com and 80+ Google reviews on MS Sparrow Hostel.

Chrome Web StoreManifest V3BYO API key

Haydar Forge

PWA · Privacy-first

Identity-recovery progressive web app. localStorage-only by design — no server, no telemetry, no analytics, no Google fonts. Self-hosted fonts, dark theme, mobile-first at 360px, Slovenian / English toggle. Built privacy-first because the use case demanded it.

PWAVanilla JSlocalStorage

Polymarket Copy-Trading Bot

Bot · Wallet-watching

Wallet-watching copy-trade bot for prediction markets. Researched market microstructure before building — concluded sub-100ms HFT dominates naive arbitrage, pivoted scope to copy-trading the top wallets instead. The discipline is in the pivot, not the line count.

Node.jsPolymarket APIWallet polling

Morning Briefing System

Cron Agent · Daily 08:30

Production daily-cron agent that scans five Gmail inboxes, categorises by intent, drafts replies for brand-deal and partnership threads, surfaces AI / Claude Code news, and emits a single morning report. Runs on Windows Task Scheduler against the Anthropic API. Live for months — no babysitting.

Claude CodeGmail MCPCron

Cold Outreach Automation

Cron Agent · Daily 10:00 Mon–Fri

Automated cold-email sequencer drawing from a Supabase pipeline. Step-aware dedup (lead × step UNIQUE constraint), GDPR unsubscribe handling, rate-limited via daily send quota. Powers Legionela Tracker outreach and MS Sparrow Hostel group-booking sales. Real revenue path — not theoretical.

SupabaseGmail MCPNode.js

MCP Inbox Orchestration

Infrastructure · 5 Inboxes

Custom MCP (Model Context Protocol) servers orchestrating five Gmail inboxes from a single agentic surface — hostel operations, Sparrow Universal, Legionela Tracker, plus operational sends. Search, read, draft, send, threaded replies. Sub-agent-ready architecture so each project speaks only to its own inbox.

MCPNode.jsOAuth2

0 Live Automation Systems

0 SaaS Products Deployed

0 AI Videos Produced

100% AI-Built & Operated

Selected Work

Watch Our Work

Studio

Sparrow Universal is an AI automation studio based in Ljubljana, Slovenia. We build three things: cinematic AI films, business automation systems that run without you, and compliance SaaS platforms that generate recurring revenue.

Founded by a hospitality entrepreneur who automated his own 28-bed hostel from the ground up — outreach, email triage, daily intelligence, pricing — then turned those systems into products. Everything we sell, we use. Daily.

What We Build

AI Cinema

Cinematic brand films and narrative short films — scripted, directed, and produced entirely with AI. 4K output, sound design, color grade. No crew. No compromise.

Business Automation

Cold outreach that sends daily from your inbox. Morning briefings with competitive intel. Email triage that categorizes and drafts replies. All running on autopilot.

Compliance SaaS

Full SaaS platforms for regulated industries — digital record-keeping, automated alerts, inspector-ready reports. Multi-tenant. Subscription-ready. You own it, you sell it.

Daily Intelligence

AI-powered daily briefings — competitor monitoring, event tracking, demand signals, industry news. Delivered to your inbox every morning. Zero effort after setup.

API Integrations

Custom MCP servers that connect any platform to your AI workflow — channel managers, CRMs, Gmail, Supabase, booking systems. Production-ready in days.

Sparrow Universal — AI-Powered Creative Studio

Our Work

ECHO

Don Cookie