Built for privacy
Self-hosted by default, EU-only, GDPR-native. Your data never touches a US cloud unless you ask.
private dev studio
Private AI, community bots, and privacy-first web stacks — shipped in days, source on handover. A solo studio that ships and stays.
services
Pick the one that fits — or stack them. Each lane has its own page with tiers, features, and timing details.
Self-hosted LLMs with RAG over your documents. EU-hosted, GDPR-native, no OpenAI in the loop.
Explore /webCustom landing pages, marketing sites, dashboards. Vite + Cloudflare baseline, source ships with the invoice.
Explore /botsModeration, role automation, alerts. Turn-key, hosted or self-host. Built for communities, not for hype rooms.
Explorewhy halcyon
No agency layers, no platform lock-in, no surprise pricing. Three things we promise on every brief.
Self-hosted by default, EU-only, GDPR-native. Your data never touches a US cloud unless you ask.
Brief → quote → build → ship. 48h median delivery on small jobs, written delivery windows on every quote.
Full repository handed over with the final invoice. No service keys, no monthly leashes, no vendor lock-in.
how it works
No agency. No tickets. From brief to delivery in days.
Drop the idea in Discord or by mail. Rough scope is enough, refs welcome.
Fixed price + delivery window back within 24 hours. No hourly surprises.
50% upfront. Stripe, SEPA, Klarna, PayPal — or crypto (ETH, SOL, BTC). The rest on delivery.
48h for small jobs, up to a week for full stacks. Source handed over with invoice.
questions
Whatever works for you. Card via Stripe, SEPA, Klarna, PayPal — or crypto (ETH, SOL, BTC) if you prefer. 50% upfront, 50% on delivery.
Small jobs ship in 24–72 hours. Full stacks land within a week. Every quote ships with a written delivery window.
Yes. The full repository is handed over at delivery — no escrow keys, no service contracts, no monthly leashes.
A solo developer based in Europe. References available via DM. Small on purpose — that's how the response window stays tight.