Sundai Foundation

Your donation keeps Boston hackers building in public.

Sundai Foundation is a registered 501(c)(3) nonprofit. Every gift is tax-deductible to the extent allowed by law and is processed securely on Stripe.

501(c)(3) • Tax-deductibleStripe-secured checkout & receipts

Tax status

Sundai is a public charity.

  • • Contributions are deductible in the United States.
  • • Stripe emails you an official receipt immediately after you give.
  • • Employer matches, donor-advised funds, and grants are welcome.

Need paperwork?

For custom pledges, wiring instructions, or paperwork, email us and the foundation team will respond within one business day.

Email team@sundai.club

Prefer a call? Mention it in your message and we'll schedule time.

Gift options

Browse every Stripe tier.

Scroll horizontally inside each section to see the preset one-time, monthly, and annual gifts. Tap any card to finish on Stripe.

Monthly

Join the recurring membership tiers

Recurring

$1/mo

Stripe

Bit Flip - just a tiny nudge. If everyone flipped a bit, we'd be rich.

Donate on Stripe

Recurring

$8/mo

Stripe

Byte Me - you're feeding at least one caffeinated developer.

Donate on Stripe

Recurring

$16/mo

Stripe

Half a Float - buy us a pizza. Classic. Solid. Delicious.

Donate on Stripe

Recurring

$64/mo

Stripe

64-Bit Upgrade - you've officially doubled our pointer size and our happiness.

Donate on Stripe

Recurring

$256/mo

Stripe

SUDO mode - we can now build with the top Claude Code subscription!

Donate on Stripe

One-time

Fuel a launch day or a hack sprint

Custom amount on Stripe →

One-time gift

$16

Stripe

Half aFloat - fuel a pizza for the build crew.

Donate on Stripe

One-time gift

$64

Stripe

64-bit boost - double our pointer size and happiness.

Donate on Stripe

One-time gift

$256

Stripe

SUDO mode - unlock the top Claude subscription for a sprint.

Donate on Stripe

Annual

Anchor a full year of Sundai impact

Annual pledge

$256/yr

Stripe

Full Range - you are covering all 256 int values of Sundai.

Donate on Stripe

Annual pledge

$512/yr

Stripe

At this level, you can probably hear syscalls.

Donate on Stripe

Annual pledge

$1,024/yr

Stripe

A full kilodonor. Legendary.

Donate on Stripe

Have a bigger idea in mind?

We love partnering with families, companies, and funds that want to accelerate open innovation. Reach out and we'll set up a call or share board materials.