diff --git a/server.py b/server.py
index 8810864..3ec3fdb 100644
--- a/server.py
+++ b/server.py
@@ -19,18 +19,27 @@ async def check_http(request):
         logger.info(f"Unvalid json in request, body is : {request.body}")
         return json_response({
             "status": "error",
-            "content": "InvalidUsage, body isn't proper json"
+            "code": "error_bad_json",
+            "content": "InvalidUsage, body isn't proper json",
         })
 
     if not data or "domain" not in data:
         logger.info(f"Unvalid request didn't specified a domain (body is : {request.body}")
-        return json_response({"status": "error", "content": "request must specify a domain"})
+        return json_response({
+            "status": "error",
+            "code": "error_no_domain",
+            "content": "request must specify a domain",
+        })
 
     domain = data["domain"]
 
     if not validators.domain(domain):
         logger.info(f"Invalid request, is not in the right format (domain is : {domain})")
-        return json_response({"status": "error", "content": "domain is not in the right format (do not include http:// or https://)"})
+        return json_response({
+            "status": "error",
+            "code": "error_domain_bad_format",
+            "content": "domain is not in the right format (do not include http:// or https://)",
+        })
 
     # TODO DNS check
 
@@ -43,12 +52,20 @@ async def check_http(request):
                 logger.info(f"Success when checking http access for {domain} asked by {ip}")
         # TODO various kind of errors
         except aiohttp.client_exceptions.ClientConnectorError:
-            return json_response({"status": "error", "content": "connection error, could not connect to the requested domain, it's very likely unreachable"})
+            return json_response({
+                "status": "error",
+                "code": "error_http_check_connection_error",
+                "content": "connection error, could not connect to the requested domain, it's very likely unreachable",
+            })
         except Exception:
             import traceback
             traceback.print_exc()
 
-            return json_response({"status": "error", "content": "an error happen while trying to get your domain, it's very likely unreachable"})
+            return json_response({
+                "status": "error",
+                "code": "error_http_check_unknown_error",
+                "content": "an error happen while trying to get your domain, it's very likely unreachable",
+            })
 
     # [x] - get ip
     # [x] - get request json
@@ -60,6 +77,8 @@ async def check_http(request):
     # [x] - ADD TIMEOUT
     # [x] - try/catch, if everything is ok → response ok
     # [x] - otherwise reponse with exception
+    # [x] - create error codes
+    # [ ] - rate limit
 
     return json_response({"status": "ok"})