August 25, 2026
The Natural sandbox is now in beta and available to all users. It’s a complete Natural environment that works like production, so you can build and test your integration end to end without moving real money.
- No separate onboarding. Flip the Sandbox toggle in the dashboard to get sandbox keys, and your organization carries over automatically.
- Money moves instantly. Transfers and payments settle as soon as you make them.
- Simulate the other side of every flow. Accepting a pending invitation verifies the test customer. Simulation endpoints also let you decline an invitation, fulfill or decline a payment request, complete a payment claim held for an off-platform recipient, and link a test bank account.
- Fixtures included. Every sandbox organization gets a set of synthetic counterparties with reserved identifiers, so you always have someone to pay and request.
- Works everywhere Natural does. The full sandbox is available from the API, MCP, the SDKs, and the CLI. Keys carry their environment in the prefix and never work anywhere else.