Happen AI
— Launching 2026

Portable AI agent workspaces. Not a cloud.

A file format for AI agents. Ship them like you ship docker-compose.yml. One .hpk file, runs anywhere, brings its own prompts, tools, and knowledge.

Desktop-first BYO API keys Ed25519-signed Open format

Signup opens with launch. Questions before then: hello@happen-ai.com.

What it is.

A file format

.hpk (Happen Pack) — a portable zip + manifest describing an AI agent: its prompts, tools, model adapters, knowledge base, and runtime config. MIT-licensed spec.

A desktop app

Install packs. Run agents locally. Bring your own Claude/OpenAI keys. Agents run on your machine using your compute. Free forever.

A marketplace

Browse and buy signed .hpk packs from creators. Four tiers: Personal, Commercial, Agency, Source. Merchant-of-record handles tax globally.

Optional cloud

Want your agents running 24/7 even with your laptop off? Pro ($5/mo) and Business ($29/mo) tiers run your agents on our multi-tenant runtime. Optional — the desktop app works forever without it.

Get in touch.

We're small. You'll actually get a reply.

Happen AI — operated by Abhishek Paul
Bengaluru, Karnataka, India

hello@happen-ai.com — general
support@happen-ai.com — product
refunds@happen-ai.com — refunds
legal@happen-ai.com — legal
privacy@happen-ai.com — privacy