diff --git a/doc/DESIGN.gmi b/doc/DESIGN.gmi
new file mode 100644
index 0000000..1d4becc
--- /dev/null
+++ b/doc/DESIGN.gmi
@@ -0,0 +1,51 @@
+# DESIGN
+This document describes the design of this project. The main purpose is to describe the interface between the client and the server, but I might document other useful information here, too.
+
+## Client/Server Communication
+All communication is done through JSON.
+
+### Client Requests
+Clients can make requests to the server by sending a JSON object containing two fields:
+* "request", which is a string of name of the request being made
+* "parameters", which is an object whose structure depends on the request. It contains a named list of the request's parameters
+
+### Server Responses
+Upon receiving and handling a request, the server will send a response object with the following fields:
+* "success", a boolean that indicates whether the request succeeded
+* "response", an object whose structure depends on the request. It contains data relevant to the request
+
+### Example Request and Response
+An example request might look as follows:
+```
+{
+    "request": "create-world",
+    "parameters": {
+        "name": "test world",
+        "size": {
+            "height": 10,
+            "width": 15,
+        }
+    }
+}
+```
+
+A success response might look like:
+```
+{
+    "success": true,
+    "response": {
+        "world-id": 69420
+    }
+}
+```
+
+Or, in the case of an error:
+```
+{
+    "success": false,
+    "response": {
+        "code": 69
+        "message": "A world with this name already exists"
+    }
+}
+```
diff --git a/TODO.gmi b/doc/TODO.gmi
similarity index 100%
rename from TODO.gmi
rename to doc/TODO.gmi
diff --git a/build.sh b/scripts/build.sh
similarity index 88%
rename from build.sh
rename to scripts/build.sh
index 0c2d9ad..eb06c98 100755
--- a/build.sh
+++ b/scripts/build.sh
@@ -8,7 +8,7 @@ if [ "$1" = "run" ]; then
     run_exe=1
 fi
 
-if ! [ -f ".gitignore" ]; then
+if ! [ -d ".git" ]; then
     echo "Run in the project root"
     exit 1
 fi
diff --git a/run.sh b/scripts/run.sh
similarity index 67%
rename from run.sh
rename to scripts/run.sh
index ab5a5ef..c4b9132 100755
--- a/run.sh
+++ b/scripts/run.sh
@@ -1,6 +1,13 @@
 #!/bin/sh
 
-./build.sh
+set -e
+
+if ! [ -d ".git" ]; then
+    echo "Run in the project root"
+    exit 1
+fi
+
+./scripts/build.sh
 
 echo "### DAEMON ###"
 ./build/server/simworld-daemon &