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A+ API

API Reference

Browse all endpoints: mint, burn, and transfer.

Try the API

Use the interactive playground to send requests (requires an API token).

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Mint, Burn, and Transfer flows

The API supports three flows: mint (fiat → token), burn (token → fiat), and transfer (token only). Note that the wallet provider will add the nonce, from, gasPrice and gasLimit.

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Mint route

  1. Issuing bank determines they have sufficient funds (e.g. from an incoming wire) to mint USDA+ to a specified address
  2. Bank calls our API to get the mint() payload (amount and recipient based on those funds, minus fees)
  3. Bank calls their wallet provider to do the transaction using the mint() payload

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Burn route

  1. Bank determines they have sufficient redemption capacity (e.g. from an outgoing wire for redemption) to burn USDA+
  2. Bank calls our API for the burn() payload equal to the redemption amount less fees
  3. Bank executes transaction from their wallet provider using the burn() payload

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Transfer route

  1. Bank wants to transfer USDA+ on-chain to another on-chain address
  2. Bank calls our API for the transferFrom() payload
  3. Bank executes transaction with their wallet provider using the transferFrom() payload
Transfer is for the bank to manage its own balances, pay others in the stablecoin, or move funds between addresses they control.

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Authentication

All API requests require Bearer token authentication. Include your API token in the Authorization header: 
Authorization: Bearer YOUR_API_TOKEN
Obtain an API token from your A+ integration contact.

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Base URLs

EnvironmentBase URL
Localhttp://localhost:3000
Use the API Reference playground to send requests.

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Next steps

  • Go to API Reference to see request/response schemas and try each endpoint.
  • Use the Try it panel on any endpoint page to send live requests (with your API token).