diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..234f43f2
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "tools/transport-apis"]
+	path = tools/transport-apis
+	url = https://github.com/public-transport/transport-apis.git
+	branch = v1
diff --git a/tools/pull-profile-base-data.sh b/tools/pull-profile-base-data.sh
new file mode 100755
index 00000000..e69db890
--- /dev/null
+++ b/tools/pull-profile-base-data.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -e
+cd $(realpath $(dirname $0))
+
+src="transport-apis/data"
+
+query="{\
+auth: {
+	type: \"AID\",
+	aid: .options.auth.aid?, \
+}, \
+salt: .options.checksumSalt, \
+client: {
+	type: .options.client.type?, \
+	id: .options.client.id?, \
+	v: .options.client.v?, \
+	name: .options.client.name?, \
+}, \
+endpoint: .options.endpoint, \
+ext: .options.ext, \
+ver: .options.version, \
+}"
+
diff --git a/tools/transport-apis b/tools/transport-apis
new file mode 160000
index 00000000..d15fa68b
--- /dev/null
+++ b/tools/transport-apis
@@ -0,0 +1 @@
+Subproject commit d15fa68b3b4703ee172d706ea39b148e9dd8bd47