Describe Supported Datasets & Algorithms
========================================

**Endpoint**

.. http:get:: /servlet/InfoServlet
   :synopsis: List supported datasets and compression families/parameters

   **Query Parameters**

   :param request: Must be ``describeContent`` (required)
   :type request: string

   :param service: Must be ``compression`` (required)
   :type service: string

**Purpose**

Returns a machine-readable JSON describing **supported datasets** and **available compression families/parameters**.

**Example**

.. code-block:: bash

   GET |BASE_URL|/servlet/InfoServlet?request=describeContent&service=compression

**Response**

- **200 OK**
 |               JSON describing compression families and their parameters.
- **200 Internal Server Error**
 |               Unknown ``service`` → json mentionning ``Unknown service [service] for request [DESCRIBE_CONTENT].``
 |               Unknown ``request`` → json mentionning ``Unknown request type [requestType].``