> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/databases/postgresql/api.md).

# API

The <code class="expression">space.vars.ionos\_cloud</code> 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 <code class="expression">space.vars.ionos\_cloud</code>'s DBaaS API versions, not PostgreSQL software versions.

{% hint style="warning" %}
**Important:**

* Effective **September 15, 2026**, **PostgreSQL v1** functionality will be fully deactivated in both the [<mark style="color:blue;">DCD</mark>](/cloud/databases/postgresql/how-tos/v1.md) and [<mark style="color:blue;">API</mark>](/cloud/databases/postgresql/api/v1-api.md). Use **PostgreSQL v2** to create and manage clusters using the [<mark style="color:blue;">DCD</mark>](/cloud/databases/postgresql/how-tos/v2.md) or the [<mark style="color:blue;">API</mark>](https://api.ionos.com/docs/postgresql/v2/).
* 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 [<mark style="color:blue;">Manual migration</mark>](/cloud/databases/postgresql/how-tos/migrate-from-v1-v2.md#manual-migration).
  {% endhint %}

## 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

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>PostgreSQL v2 API</strong></mark></td><td>Learn how to create, manage, and delete PostgreSQL clusters using the PostgreSQL v2 Cloud API.</td><td><a href="https://api.ionos.com/docs/postgresql/v2/">https://api.ionos.com/docs/postgresql/v2/</a></td></tr><tr><td><mark style="color:blue;"><strong>PostgreSQL v1 API</strong></mark></td><td>Learn how to manage MongoDB replica set clusters, users, and backups with the PostgreSQL v1 REST API.</td><td><a href="https://api.ionos.com/docs/postgresql/v1/">https://api.ionos.com/docs/postgresql/v1/</a></td></tr></tbody></table>


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