Developer Resources

Get started issuing custom debit cards

The Treasury Prime + Marqeta partnership gives you the access to best-in-class card issuing and best-in-class banking APIs in the same place.
Find out how →
Sandbox

Start building today

Create API keys instantly, test payments, cards, & more
Start now →
Guides

Follow our easy getting started guide

Start using the API in minutes
Read the guide →
Docs

Explore the API documentation

Learn the ins and outs of the Treasury Prime API
Explore the docs →
Integrations with leading partners to help you move fast

Simple, developer-first APIs

The Process

From Sandbox to Production. Fast.

Step 1: Get API Keys

Start building in Sandbox

Create keys and start building with the API in our Developer Sandbox!
Get started in Sandbox
Step 2: Match with a bank partner

Match with a bank partner

When you're ready, contact us and we'll match you with a bank partner who supports your unique needs.
Step 3: Move to production API environment

Move to production

Our customer success team walks you through everything you'll need to start opening real accounts, issuing cards, and more.
Step 4: Launch your product.

Launch your new product!

Introduce your great new financial products to the world.