diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..6ac25ab
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module codeberg.org/OpenWeatherMap-gRPC-API
+
+go 1.18
diff --git a/proto/current.proto b/proto/current.proto
new file mode 100644
index 0000000..6108570
--- /dev/null
+++ b/proto/current.proto
@@ -0,0 +1,19 @@
+syntax = "proto3";
+
+package weather;
+
+option go_package = "codeberg.org/andcscott/OpenWeatherMap-gRPC-API/proto";
+
+message RequestCurrent {
+  oneof location {
+    string city = 1;
+    string zip_code = 2;
+    string coords = 3; // Comma separated coordinates, e.g. "44.5,-123.3"
+  }
+  optional string state = 4; // US Only
+  optional string country = 5; // Must be ISO 3166 country code
+}
+
+message SendCurrent {
+  string payload = 1;
+}
diff --git a/proto/extended.proto b/proto/extended.proto
new file mode 100644
index 0000000..07b12d6
--- /dev/null
+++ b/proto/extended.proto
@@ -0,0 +1,20 @@
+syntax = "proto3";
+
+package weather;
+
+option go_package = "codeberg.org/andcscott/OpenWeatherMap-gRPC-API/proto";
+
+message RequestExtended {
+  oneof location {
+    string city = 1;
+    string zip_code = 2;
+    string coords = 3; // Comma separated coordinates, e.g. "44.5,-123.3"
+  }
+  optional string state = 4; // US Only
+  optional string country = 5; // Must be ISO 3166 country code
+  uint32 days = 6;
+}
+
+message SendExtended {
+  string payload = 1;
+}
diff --git a/proto/weather.proto b/proto/weather.proto
new file mode 100644
index 0000000..22cd648
--- /dev/null
+++ b/proto/weather.proto
@@ -0,0 +1,13 @@
+syntax = "proto3";
+
+package weather;
+
+option go_package = "codeberg.org/andcscott/OpenWeatherMap-gRPC-API/proto";
+
+import "current.proto";
+import "extended.proto";
+  
+service WeatherService {
+    rpc Current(RequestCurrent) returns (SendCurrent);
+    rpc Extended(RequestExtended) returns (SendExtended);
+}