FlowFuse · hardillb · Mar 5, 2026 · Mar 4, 2026 · Mar 4, 2026 · Mar 5, 2026
diff --git a/lib/launcher.js b/lib/launcher.js
@@ -1,3 +1,4 @@
+const bytes = require('bytes')
 const childProcess = require('child_process')
 const { existsSync } = require('fs')
 const fs = require('fs/promises')
@@ -294,6 +295,10 @@ class Launcher {
             ]
         }
 
+        if (this.settings?.editor?.apiMaxLength) {
+            settings.apiMaxLength = bytes(this.settings.editor.apiMaxLength)
+        }
+
         // if licensed, add palette catalogues
         if (this.config.licensed) {
             if (this.project) {

diff --git a/lib/template/template-settings.js b/lib/template/template-settings.js
@@ -178,6 +178,13 @@ const runtimeSettings = {
     editorTheme: { ...editorTheme }
 }
 
+if (settings.apiMaxLength) {
+    runtimeSettings.apiMaxLength = settings.apiMaxLength
+    runtimeSettings.ui = {
+        maxHttpBufferSize: settings.apiMaxLength
+    }
+}
+
 if (!settings.localAuth?.enabled) {
     runtimeSettings.editorTheme.login = {
         message: 'Access the editor through the FlowFuse platform'

diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -38,6 +38,7 @@
         "@flowfuse/nr-theme": "^1.8.0",
         "@inquirer/confirm": "^5.1.9",
         "@inquirer/select": "^4.2.0",
+        "bytes": "^3.1.2",
         "command-line-args": "^6.0.1",
         "command-line-usage": "^7.0.3",
         "express-session": "^1.18.0",