diff --git a/build/main.js b/build/main.js
index 93c40db..c73dce8 100644
--- a/build/main.js
+++ b/build/main.js
@@ -107810,7 +107810,7 @@ var init_routes = __esm({
         options: {
           allowUnknown: true
         },
-        payload: import_npm_joi.default.string().required()
+        payload: import_npm_joi.default.string().min(1).max(import_npm_nconf5.default.get("server:maxEventSize")).required()
       }
     }, async function(request) {
       if (ARCHIVE_MODE) return import_boom3.default.notImplemented("Server in archive mode");
@@ -115184,6 +115184,7 @@ var parseConfig = () => {
       "logLevel": "debug",
       "messages": [],
       "maxEventsBatchSize": 500,
+      "maxEventSize": 512 * 1024,
       "archiveMode": false
     },
     "database": {
diff --git a/src/parseConfig.ts b/src/parseConfig.ts
index 6fa850f..c2b6c0c 100644
--- a/src/parseConfig.ts
+++ b/src/parseConfig.ts
@@ -33,6 +33,7 @@ const parseConfig = () => {
         'logLevel': 'debug',
         'messages': [],
         'maxEventsBatchSize': 500,
+        'maxEventSize': 512 * 1024,
         'archiveMode': false
       },
       'database': {
diff --git a/src/serve/routes.ts b/src/serve/routes.ts
index 6579605..3e9f75a 100644
--- a/src/serve/routes.ts
+++ b/src/serve/routes.ts
@@ -214,7 +214,7 @@ route.POST('/event', {
     options: {
       allowUnknown: true
     },
-    payload: Joi.string().required()
+    payload: Joi.string().min(1).max(nconf.get('server:maxEventSize')).required()
   }
 }, async function (request) {
   if (ARCHIVE_MODE) return Boom.notImplemented('Server in archive mode')