API

The IONOS CLOUD Database as a Service (DBaaS) PostgreSQL API lets you provision and manage highly available PostgreSQL clusters, configure backups, and handle access and privileges.

PostgreSQL API versions

DBaaS PostgreSQL offers two versions of the PostgreSQL API. Version 2 (2.0.0) is the modern, future-proof, and developer-friendly standard, while Version 1 (1.0.0) is the legacy implementation.

PostgreSQL v1 and PostgreSQL v2 refer to IONOS CLOUD's DBaaS API versions, not PostgreSQL software versions.

Important:

• Effective September 15, 2026, PostgreSQL v1 functionality will be fully deactivated in both the DCD and API. Use PostgreSQL v2 to create and manage clusters using the DCD or the API.
• Cluster creation using PostgreSQL v1 API is deprecated since July 15, 2026. In the DCD, only limited operations are supported on legacy (existing v1) clusters.
• Existing PostgreSQL v1 clusters will be automatically migrated to the new PostgreSQL v2 infrastructure starting July 29, 2026. No user action is required and we will notify you before the migration. If you prefer to migrate earlier, see Manual migration.

What can you do with the PostgreSQL APIs?

The PostgreSQL API lets you manage PostgreSQL database clusters programmatically using standard HTTPS requests.

You can also use the PostgreSQL API to:

• Modify cluster attributes.
• Manage user access and databases.
• Restore database clusters from backups.
• Query supported PostgreSQL versions.
• Access cluster logs.

Quick Links

PostgreSQL v2 API

Learn how to create, manage, and delete PostgreSQL clusters using the PostgreSQL v2 Cloud API.

PostgreSQL v1 API

Learn how to manage MongoDB replica set clusters, users, and backups with the PostgreSQL v1 REST API.