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graphql-engine/docs/graphql/manual/deployment/allow-list.rst

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.. meta::
:description: Manage allow list with Hasura GraphQL engine
:keywords: hasura, docs, deployment, allow list
.. _allow_list:
Allow-list of operations
========================
.. contents:: Table of contents
:backlinks: none
:depth: 1
:local:
The **Allow-list** is a list of safe operations (*GraphQL queries, mutations or subscriptions*) that is stored by
the GraphQL engine in its metadata. When enabled, it can be used to restrict the GraphQL engine so that it
executes **only** those operations that are present in the list *(available after version v1.0.0-beta.1)*.
Adding or removing a operation in allow-list
--------------------------------------------
You can add or remove a operation in the allow-list in two ways:
* **Using the console:** Head to the ``Settings`` (⚙) --> ``Allow list`` section in the console. You can
add a new operation to the allow-list or upload a list of new operations from a file that will be added to the
allow-list. You can also see a list of existing operations in the allow-list and delete them individually.
* You can add an individual operation, like the one below, manually to the allow-list with a unique name.
.. code-block:: graphql
query ($id: Int!){
user_by_pk(id: $id){
__typename
id
name
company
}
}
* You can upload files, like this `sample file <https://gist.github.com/dsandip/8b1b4aa87708289d4c9f8fd9621eb025>`_,
to add multiple operations to the allow-list (each operation needs to have a name).
* **Using metadata APIs:** Queries can be stored in collections and a collection can be added to or removed
from the allow-list. See :ref:`Collections & Allow-list APIs<api_query_collections>`
for API reference.
.. note::
* ``__typename`` introspection fields will be ignored when adding operations and comparing them to the allow-list.
* Any introspection queries that your client apps require will have to be explicitly added to the allow-list
to allow running them.
* The order of fields in a query will be **strictly** compared. E.g. assuming the query in the first example
above is part of the allow-list, the following query will be **rejected**:
.. code-block:: graphql
query ($id: Int!){
user_by_pk(id: $id){
__typename
name
id
company
}
}
* The allow-list is stored in the metadata. To version control the state of the list, you are required to export
the metadata. See :ref:`Managing Hasura metadata <manage_hasura_metadata>` for more details.
* You can modify the allow-list without actually enabling it on your instance.
Enable allow-list
-----------------
The allow-list validation can be enabled by setting the ``HASURA_GRAPHQL_ENABLE_ALLOWLIST`` environment
variable to ``true`` or running the GraphQL engine with the ``--enable-allowlist`` flag (*default value is*
``false``). See :ref:`reference docs <command-flags>`.
.. note::
The allow-list validation will not be enforced for the ``admin`` role.
Recommended usage
-----------------
The following are the recommended best practices for enabling/disabling allow-list based validation:
* **In development instances**: During development or in dev instances, disable allow-list (*default setting*)
to allow complete access to the GraphQL schema. Add/remove operations in the allow-list and then export the
metadata for version-control (*so you can apply it to other instances*).
* **In CI/CD instances**: Enable the allow-list for testing.
* **In production instances**: Enabling the allow-list is highly recommended when running the GraphQL engine in production.