# Apicurio

Apicuro supports the following versions of Confluent's API:

* Confluent Schema Registry API v6
* Confluent Schema Registry API v7

{% hint style="success" %}
Only one Schema Registry connection is allowed.

Name must be schema-registry.

See [JSON schema](https://docs.lenses.io/latest/devx/6.0/deployment/configuration/overview#json-schema-support) for support. 

Environment variables are supported; escape the dollar sign

```yaml
sslKeystorePassword:
  value: "\${ENV_VAR_NAME}"
```

{% endhint %}

Set the schema registry URLs to include the compatibility endpoints, for example:

```bash
http://localhost:8080/apis/ccompat/v6
```

{% code title="provisioning.yaml" %}

```yaml
confluentSchemaRegistry:
  - name: schema-registry
    tags: ["tag1"]
    version: 1      
    configuration:
      schemaRegistryUrls:
        value:
          - http://localhost:8080/apis/ccompat/v6
```

{% endcode %}