Sandcastle v0.40.0
Pricing / What It Costs

Free to build.
Licensed to ship.

Sandcastle is free forever for development, testing, and personal projects. Every feature, every model provider, every sandbox backend — all of it, no gate. A commercial license unlocks production use, and the whole thing converts to Apache 2.0 in 2030.

License ·· BSL 1.1
Change date ·· → Apache 2.0 (2030)
Hosting ·· Self-hostable, no lock-in
01 / Community

Community

BSL 1.1 · non-production

For developers, hobbyists, and open-source projects. Full access to every feature.

$0forever
Develop, test, prototype — no restrictions
  • AllEvery feature included — no feature gates, one version
  • RunAll sandbox backends — E2B, Docker, Cloudflare, Local
  • UIDashboard + REST API
  • Lib118 community templates, one-click install
  • HelpCommunity support via GitHub Issues
Get started Clone, build, run locally — free, today.
02 / Pro

Pro

Recommended for production

For startups and teams running Sandcastle in production. Self-hosted, your infrastructure.

$49/ month
Billed annually ($588 / year) · or $59 / month
  • BaseEverything in Community
  • ShipProduction use license
  • TeamUp to 10 team members
  • SLAEmail support — 48h response
  • BillCommercial invoice
Get Pro license Licensed in minutes. Bootstrapped startup? See the FAQ.
03 / Enterprise

Enterprise

Annual contract · volume

For organizations that need custom terms, an SLA, and dedicated support.

Custom
Annual contract · volume pricing
  • BaseEverything in Pro
  • TeamUnlimited team members
  • SLAPriority support — 24h SLA
  • LegalCustom license terms
  • SetupOnboarding + architecture review
Contact us Indemnification, DPA, SLA — we'll work with your legal team.
Compare plans — line by line

The whole platform ships in every plan.

All plans include the full Sandcastle platform. Paid plans add production rights and support — nothing technical is held back.

Feature Community Pro Enterprise
Workflow engine + DAG executor
Dashboard + REST API
All sandbox backends (E2B, Docker, CF, Local)
53 tool integrations
Policy engine + PII redaction
Community templates (118)
Production deployment rights
Team members — Up to 10 Unlimited
Support GitHub Issues Email · 48h Priority · 24h SLA
Commercial invoice
Custom license terms
Onboarding + architecture review
FAQ — for the record

Common questions.

What counts as "production use"?

Any deployment that serves real users, processes real data, or runs as part of a business operation. Internal tools your team uses for day-to-day work also count as production.

Can I use it for free during development?

Yes. The Community plan covers local development, testing, CI/CD pipelines, demos, prototypes, personal projects, and open-source contributions. No restrictions.

What happens after the BSL Change Date (2030)?

The license automatically converts to Apache 2.0. After that date, all versions released before it become fully open source with no production restrictions.

Is there a free tier for startups?

If you're a bootstrapped startup with fewer than 5 people and under $100k ARR, reach out — we offer discounted or free production licenses on a case-by-case basis.

Do I need a license per server?

No. The Pro license covers your entire team (up to 10 members) regardless of how many servers or instances you run. Enterprise is unlimited.

Can I modify the source code?

Yes. All plans allow you to modify, fork, and create derivative works. Your modifications remain under BSL 1.1 terms (or Apache 2.0 after 2030).

How do I get an invoice for my company?

Pro and Enterprise plans include commercial invoices. Email tom@pflanzer.cz with your company details and we'll send a proper invoice.

What if I need custom terms?

The Enterprise plan includes custom license agreements. If you need specific clauses — indemnification, data processing, SLA — we can work with your legal team.

Start free. License when you ship.

Build for free today.

$pip install sandcastle-ai Copy
Get a license ↗ GitHub ↗ PyPI ↗ Docs ↗