diff --git a/lib/MusicBrainz/Server/Test/WS.pm b/lib/MusicBrainz/Server/Test/WS.pm
index aa32643d94a..33c4278b53e 100644
--- a/lib/MusicBrainz/Server/Test/WS.pm
+++ b/lib/MusicBrainz/Server/Test/WS.pm
@@ -21,10 +21,12 @@ our @EXPORT_OK = qw(
 
 Readonly our $FORBIDDEN_JSON_RESPONSE => {
     error => 'You are not authorized to access this resource.',
+    help => 'For usage, please see: https://musicbrainz.org/development/mmd',
 };
 
 Readonly our $UNAUTHORIZED_JSON_RESPONSE => {
     error => 'Your credentials could not be verified. Either you supplied the wrong credentials (e.g., bad password), or your client doesn\'t understand how to supply the credentials required.',
+    help => 'For usage, please see: https://musicbrainz.org/development/mmd',
 };
 
 Readonly our $FORBIDDEN_XML_RESPONSE => <<'EOXML';
diff --git a/lib/MusicBrainz/Server/WebService/JSONSerializer.pm b/lib/MusicBrainz/Server/WebService/JSONSerializer.pm
index 47a50700f79..cabeaecd014 100644
--- a/lib/MusicBrainz/Server/WebService/JSONSerializer.pm
+++ b/lib/MusicBrainz/Server/WebService/JSONSerializer.pm
@@ -129,7 +129,10 @@ sub autocomplete_editor {
 sub output_error {
     my ($self, $err) = @_;
 
-    return encode_json({ error => $err });
+    return encode_json({
+        error => $err,
+        help => 'For usage, please see: https://musicbrainz.org/development/mmd',
+    });
 }
 
 sub output_success {
diff --git a/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/BrowseReleases.pm b/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/BrowseReleases.pm
index 8b0fcad4844..566db549f46 100644
--- a/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/BrowseReleases.pm
+++ b/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/BrowseReleases.pm
@@ -21,7 +21,10 @@ test 'errors' => sub {
     $mech->get('/ws/2/release?recording=7b1f6e95-b523-43b6-a048-810ea5d463a8');
     is($mech->status, 404, 'browse releases via non-existent recording');
 
-    is_json($mech->content, encode_json({ error => "Not Found" }));
+    is_json($mech->content, encode_json({
+          error => "Not Found",
+          help => 'For usage, please see: https://musicbrainz.org/development/mmd',
+    }));
 };
 
 test 'browse releases via artist (paging)' => sub {
diff --git a/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/LookupArtist.pm b/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/LookupArtist.pm
index 1c492af65a7..c5f6614a6ab 100644
--- a/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/LookupArtist.pm
+++ b/t/lib/t/MusicBrainz/Server/Controller/WS/2/JSON/LookupArtist.pm
@@ -22,12 +22,16 @@ test 'errors' => sub {
     is($mech->status, 400);
 
     is_json($mech->content, encode_json({
-        error => "coffee is not a valid inc parameter for the artist resource."
+        error => "coffee is not a valid inc parameter for the artist resource.",
+        help => 'For usage, please see: https://musicbrainz.org/development/mmd',
     }));
 
     $mech->get('/ws/2/artist/00000000-1111-2222-3333-444444444444');
     is($mech->status, 404);
-    is_json($mech->content, encode_json({ error => "Not Found" }));
+    is_json($mech->content, encode_json({
+          error => "Not Found",
+          help => 'For usage, please see: https://musicbrainz.org/development/mmd',
+    }));
 };
 
 test 'basic artist lookup' => sub {