diff --git a/docs/topics/api/index.rst b/docs/topics/api/index.rst
index 971d9858b9..33990b94e2 100644
--- a/docs/topics/api/index.rst
+++ b/docs/topics/api/index.rst
@@ -9,3 +9,4 @@ This is documentation for the API available at `/api/v3/`.
    :maxdepth: 2
 
    auth
+   signing
diff --git a/docs/topics/api/signing.rst b/docs/topics/api/signing.rst
new file mode 100644
index 0000000000..789d4f5485
--- /dev/null
+++ b/docs/topics/api/signing.rst
@@ -0,0 +1,83 @@
+=======
+Signing
+=======
+
+This API requires :doc:`authentication <auth>`.
+
+-------------------
+Uploading a version
+-------------------
+
+You can upload a new version for signing by issuing a ``PUT`` request
+and including the contents of your add-on in the ``upload`` parameter
+as multi-part formdata. This will create a pending version on the
+add-on and will prevent future submissions to this version unless
+validation or review fails.
+
+Example::
+
+    curl https://addons.mozilla.org/en-US/firefox/api/v3/addons/my-addon/versions/1.0/
+         -XPUT --form 'upload=@build/my-addon.xpi' -H 'Authorization: JWT <jwt-token>'
+
+The response will be the same as the :ref:`check-status` response.
+
+If your upload has the right metadata then it will be submitted for
+validation and you will be able to check its status.
+
+------------------
+Creating an add-on
+------------------
+
+If this is the first time that your add-on's UUID has been seen then
+the add-on will be created as an unlisted add-on when the version is
+uploaded.
+
+.. _check-status:
+
+-----------------------------------
+Checking the status of your upload
+-----------------------------------
+
+You can check the status of your upload by issuing a ``GET`` request.
+There are a few things that will happen once a version is uploaded
+and the status of those events is included in the response.
+
+Once validation is completed (whether it passes or fails) then the
+``processed`` property will be ``true``. You can check if validation
+passed using the ``valid`` property and check the results with
+``validation_results``.
+
+If validation passed then your add-on will be submitted for review.
+In the case of unlisted add-ons this will happen automatically if
+the add-on passes a strict set of tests. If your add-on is listed
+then it will be reviewed by a human and that will take a bit
+longer. Once review is complete then the ``reviewed`` property
+will be set and you can check the results with the ``passed_review``
+property.
+
+To make the request using curl::
+
+    curl https://addons.mozilla.org/en-US/firefox/api/v3/addons/my-addon/versions/1.0/
+         -H 'Authorization: JWT <jwt-token>'
+
+Here's a full example of a check status response::
+
+    {
+        "active": true,
+        "files": [
+            {
+                "download_url": "https://addons.mozilla.org/firefox/downloads/file/100/unlisted_wat-0.0.0-fx+an.xpi?src=api",
+                "signed": true
+            }
+        ],
+        "passed_review": true,
+        "processed": true,
+        "reviewed": true,
+        "url": "https://addons.mozilla.org/en-US/firefox/api/v3/addons/%40new-unlisted-api/versions/0.0.0/",
+        "valid": true,
+        "validation_results": {
+            ... snip ...
+        },
+        "validation_url": "https://addons.mozilla.org/en-US/developers/upload/f68abbb3b1624c098fe979a409fe3ce9",
+        "version": "0.0.0"
+    }