Breaking Changes

We aim to maintain backward compatibility across all of our API releases; however, occasionally we need to make breaking changes. Below you will find a list of future and past breaking changes.

• Questions about a change or our API Breaking Change Policy? Submit a Support Request.

May 4, 2024

Paxos plans to update our FIX infrastructure to improve performance, reliability and security for FIX connections. This change enables multiple FIX connections for a single account and improves TLS certificate management, among other changes. All existing FIX users are required to migrate to the new infrastructure no later than May 4, 2024. See the migration guide or contact your Paxos Representative for details.

November 15, 2023

We are writing to inform you that Paxos has initiated an End of Life (EOL) process for the List Tickers v2 API. We will discontinue the service November 15, 2023. After a review of our existing product offerings, we determined that the Get Ticker and List Prices services provide the same fields for pricing information for your trading needs.

Beginning August 2, 2023, List Tickers is deprecated, initiating a minimum of a 90-day window for transitioning to Get Ticker and List Prices endpoints. To help with this process, we’ve put together a migration guide providing suggestions on migrating off List Tickers endpoint.

Please contact connectivity@paxos.com if you have any questions or concerns.

July 11, 2023

We are planning a breaking change to the Paxos v2 REST API List Deposit Addresses service. On July 11, 2023, we are adding a default of 100 results to the limit query parameter and restricting the maximum page limit to 1,000. The 100-results-per-page default applies when no limit, or zero (0), is specified. If the pagination limit is set in excess of 1,000 items, the API returns a Bad Request error, irrespective of the actual number of retrieved items. This change enables Paxos to improve platform stability for all users.

The change is scheduled to be deployed in the Sandbox environment on June 26, 2023, giving you time to prepare and test your integrations. We recommend you test your integrations in Sandbox during the testing window.

Please contact connectivity@paxos.com if you have any questions or concerns.

April 26, 2023

• NOTE: All itBit REST API services will be turned off on April 26, 2023.

Paxos has initiated an End of Life (EOL) process for the itBit REST API (v1). We will discontinue service for all itBit REST Production (api.itbit.com/v1/) and Sandbox (sandbox-api.itbit.com/v1/) APIs on April 26, 2023. After a review of our existing product offerings, we determined that the Paxos REST API (v2) provides a better experience for all users and should be used as the primary entry point for all REST services. See the migration guide for details.

February 15, 2023

The crypto_network parameter will be required when requesting a crypto withdrawal and when depositing crypto in the Sandbox environment no earlier than February 15, 2023, to facilitate testing. The changes will go live in the Production environment no earlier than February 22, 2023. This change will enable Paxos to support future rollouts of multichain assets and ensure all requests are processed on the intended network.

All integrations must specify crypto_network when using either service by February 22, 2023.