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The AllScale Open API lets your platform take stablecoin payments from buyers and send funds out to recipients, without holding crypto infrastructure yourself. Every request is authenticated with an HMAC-SHA256 signature derived from your store’s API key and secret — start with Authentication & Request Signing.

Base URLs

Start here

Authentication

Sign your first request: headers, canonical string, and signature.

Test Routes

Verify your credentials, clock, and body hashing before writing integration code.

Create a Checkout Intent

Create an intent and redirect your buyer to the hosted checkout page.

Postman Collection

Import a ready-to-run collection with the request signer already wired up.

What you can build

Checkout

Create a checkout intent and redirect your buyer to the hosted checkout page.

Claim Links

Send an auto-payout to a recipient, and claim it back while it is still unclaimed.

Webhooks

Signed, retried callbacks for payment and claim-link events.

Payment Flow

The end-to-end sequence across buyer, your backend, and AllScale.
Your api_key and api_secret are shown once in the merchant dashboard. Contact the AllScale BD team to have a store provisioned.