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.
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.
Legal & policies.
Draft versions. Finalized at launch after attorney review. Contact legal@happen-ai.com for pre-launch questions.
Privacy Policy
Last updated: 2026-04-20 (draft)
1. Who we are
Happen AI is operated by Abhishek Paul, based in India. Contact: privacy@happen-ai.com.
2. Data we collect
Account data: email, name (optional), hashed password. Usage data: API request counts, token counts, timestamps — for billing and service improvement. Pack metadata: pack IDs and versions you install, so we can show you updates.
3. Data we do NOT collect
We do not read or log the contents of your conversations with agents when they run locally on your desktop. We do not train models on your data. We do not sell data. We do not share data with third-party advertisers.
4. Third-party services
If you use our optional cloud runtime (Pro/Business), conversations are proxied through the provider you chose (Anthropic, OpenAI, or others). We do not store message content by default; we store usage counters and error logs with message content redacted. Billing is processed by LemonSqueezy (Merchant of Record), subject to their privacy policy.
5. Your rights
You can export, delete, or correct your data at any time by emailing privacy@happen-ai.com. EU residents: GDPR rights apply. California residents: CCPA rights apply. Indian residents: DPDP Act 2023 rights apply.
6. Data retention
Account data retained until account deletion. Usage logs retained 13 months for billing dispute resolution. Backups retained 35 days.
7. Security
API keys stored encrypted at rest (Fernet with per-deployment key rotation). All traffic over HTTPS (TLS 1.2+). No security is perfect; breach notifications within 72 hours per GDPR Article 33.
8. Contact
Data controller: Abhishek Paul. Email: privacy@happen-ai.com.
Terms of Service
Last updated: 2026-04-20 (draft)
1. Agreement
By using Happen AI, you agree to these terms. If you don't agree, don't use the service.
2. Who can use it
You must be 13 or older (16+ in EU). You must have authority to accept these terms on behalf of your organization if you sign up on its behalf.
3. Your account
Keep your password secure. You are responsible for activity under your account. One person per account; don't share.
4. Packs and licensing
Packs (.hpk files) are sold under per-tier licenses:
- Personal ($149): individual, non-commercial use, 3 installs.
- Commercial ($349): single entity, commercial use, 10 installs.
- Agency ($799): use across client projects, 25 installs.
- Source ($1,499): source code access, meaningful transformation required for redistribution.
Pack sellers retain copyright; we facilitate the transaction.
5. Subscriptions
Pro ($5/mo) and Business ($29/mo) subscriptions renew automatically until cancelled. Cancel anytime. Quotas reset monthly; overage = soft-fail (service may degrade, never silent overcharge).
6. Acceptable use
Don't: use it for illegal purposes, CSAM, harassment, spam, running malware, bypassing rate limits, reverse-engineering our binaries beyond fair use, reselling the desktop app, or publishing packs you don't own rights to.
7. Intellectual property
We own Happen AI, the desktop app, the hub, and trademarks "Happen AI" and "Happen Pack". The .hpk format specification is open under MIT license.
8. Warranty & liability
Service provided "as is". We disclaim all warranties to the maximum extent permitted by law. Our liability is capped at fees you paid us in the 12 months preceding the claim. Nothing in these terms limits liability for death, personal injury, fraud, or anything else that cannot be limited under applicable law. EU and UK consumer rights apply regardless.
9. Termination
You can cancel anytime. We can suspend or terminate accounts that violate these terms. Data export available for 30 days post-termination.
10. Changes
We may update these terms. Material changes: 30 days advance email notice. Continued use = acceptance.
11. Governing law
These terms are governed by the laws of India. Disputes resolved in the courts of Bengaluru, Karnataka. Mandatory consumer protection law in your jurisdiction still applies.
12. Contact
Refund Policy
Last updated: 2026-04-20 (draft)
Packs (one-time purchases)
14-day refund on any pack, no questions asked, provided you have not yet activated more than 1 install of the pack. Activating multiple installs indicates use; after that, refunds are case-by-case for defects.
Subscriptions (Pro / Business)
Cancel anytime from your account. You retain access until the end of the current paid period. No partial-month refunds by default — but if you cancel within 3 days of renewal and haven't used the service that period, email us for a courtesy refund.
How to request
Email refunds@happen-ai.com with your order ID (from LemonSqueezy receipt). Refunds processed within 5 business days to your original payment method.
Chargebacks
Please email us before filing a chargeback — we'll almost always resolve faster than the card network. Chargebacks without prior contact may result in account suspension.
Statutory rights
EU/UK consumers: you have a 14-day cooling-off right for digital content that has not yet been downloaded. India: Consumer Protection Act 2019 rights apply.
Get in touch.
We're small. You'll actually get a reply.
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