---
title: "Create YSQL extensions"
url: "https://docs.yugabyte.com/stable/yugabyte-cloud/cloud-clusters/add-extensions/"
---

# Create YSQL extensions

Add extensions to a YugabyteDB Aeon cluster.

Extend the functionality of your cluster using PostgreSQL extensions

YugabyteDB includes a number of [pre-bundled PostgreSQL extensions](/stable/additional-features/pg-extensions/ "pre-bundled PostgreSQL extensions"), tested to work with YSQL, that you can use to extend the functionality of your database.

Extensions must be pre-bundled

YugabyteDB Aeon only supports extensions that are pre-bundled in YugabyteDB. You cannot install new extensions in YugabyteDB Aeon. Refer to [PostgreSQL extensions](/stable/additional-features/pg-extensions/ "PostgreSQL extensions") for the list of pre-bundled extensions.

## Loading extensions

Before using an extension, you must load it in the database using the [CREATE EXTENSION](/stable/api/ysql/the-sql-language/statements/ddl_create_extension/ "CREATE EXTENSION") command. For example:

```sql
CREATE EXTENSION fuzzystrmatch;
```

## Required privileges

In YugabyteDB Aeon, extensions can only be loaded by users that are a member of the `yb_extension` role. All `yb_superuser` users, including the default database admin user, are members of `yb_extension`.

Use the `GRANT` statement to assign the role to users. For example, to grant the `yb_extension` role to `user`, use the following command:

```sql
yugabyte=# GRANT yb_extension TO user;
```

For more information on roles in YugabyteDB Aeon, refer to [Database authorization in YugabyteDB Aeon clusters](/stable/yugabyte-cloud/cloud-secure-clusters/cloud-users/ "Database authorization in YugabyteDB Aeon clusters").

## Learn more

- [PostgreSQL extensions](/stable/additional-features/pg-extensions/ "PostgreSQL extensions")
- [Database authorization in YugabyteDB Aeon clusters](/stable/yugabyte-cloud/cloud-secure-clusters/cloud-users/ "Database authorization in YugabyteDB Aeon clusters")
- [Manage Users and Roles in YSQL](/stable/secure/authorization/create-roles/ "Manage Users and Roles in YSQL")