Sandbox - Natural Docs

The Natural dashboard in sandbox mode

The sandbox is a complete Natural environment that functions like production. Point your integration at the sandbox base URL with a sandbox key:

https://api.sandbox.natural.com

Keys carry their environment in the prefix (sk_ntl_sandbox_..., ak_ntl_sandbox_...) and never work anywhere else. Sandbox keys come from the dashboard: open the account menu in the bottom-left corner (the same menu you sign out from) and flip the Sandbox toggle.

How it behaves

No separate onboarding. Verified on Natural means verified in the sandbox: your organization carries over automatically, and the test parties you create are auto-verified.
Money moves instantly. Transfers and payments settle as soon as you make them.
You can reach your own parties and your fixtures, nothing else. No other sandbox organization can see or touch your data.

What you can do

Surface	What you can do
Connect	Invite a test customer, accept or decline the pending invitation, then fund it or revoke access
Payments	Complete a payment claim held for an unregistered recipient
Payment requests	Fulfill or decline a request as the payer
Bank accounts	Link a test bank account to your own party

Sandbox endpoints sit next to the resources they test, marked with a Sandbox: prefix. Every action above is also available from MCP, the SDKs, and the CLI; see Sandbox from MCP, CLI, and SDKs.

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