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updatedAt: 2026-07-30T16:13:50.000Z
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# Legacy v0/v1 REST APIs for Solace Cloud

Solace Cloud has <code>v0</code> and <code>v1</code> APIs that are in the process of being modernized to our <code>v2</code> framework. As new <code>v2</code> APIs that provide <code>v0/v1</code> API functionality become available, we encourage you to use our <code>v2</code> APIs when possible because they closely follow set standards, have full reference documentation, and have consistent interfaces and usage.

# Accessing Information for v0/v1 REST APIs

You may want to use the legacy APIs in situations where there is not yet a `v2` REST API to fulfill the functionality you require. To find information about our legacy `v0`/`v1` APIs, see:

* [Managing Services with the Solace Cloud v0 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_services.htm)
* [Managing Client Profiles with the Solace Cloud v0 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_client_profiles.htm)
* [Managing Users with the Solace Cloud v0 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_users.htm)
* [Managing Authentication with the Solace Cloud v0 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_authentication.htm)
* [Managing Certificates with the Solace Cloud v0 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_certificates.htm)

Some of the `v2` APIs are in transition to pages on this website. The information is **temporarily** available at the following locations:

* [Managing Audit Logs with the Solace Cloud v2 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_audit_logs.htm)
* [Managing Single Sign-On for Event Broker Services with the Solace Cloud v2 REST API](https://docs.solace.com/Cloud/ght_use_rest_api_configure-oauth-rest-api.htm)

# Using Legacy v0/v1 with v2 REST APIs

In general, you can mix usage of different API versions in your application **except** for Event Portal APIs.  Event Portal APIs align with the version of Event Portal you are using. For example, if you're using Event Portal 2.0, you must use only [Event Portal v2 APIs](https://api.solace.dev/cloud/reference/getapplicationdomains).