diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 00000000..c99c5d46
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,39 @@
+# Repository Guidelines
+
+This monorepo hosts Rollbar SDKs for Dart and Flutter. Use the package-level READMEs for usage examples, and follow the guidelines below when contributing.
+
+## Project Structure & Module Organization
+
+- `rollbar_common/`: shared Dart core (models, serialization, extensions) used by both SDKs; tests live in `rollbar_common/test`.
+- `rollbar_dart/`: pure Dart notifier package with examples in `rollbar_dart/example` and tests in `rollbar_dart/test`.
+- `rollbar_flutter/`: Flutter plugin and platform integration; Dart sources in `rollbar_flutter/lib`, native code in `rollbar_flutter/android` and `rollbar_flutter/ios`, tests in `rollbar_flutter/test`, and a sample app in `rollbar_flutter/example`.
+- `build_tools/`: scripts for linting, tests, builds, and publishing.
+
+## Build, Test, and Development Commands
+
+- `./build_tools/check.sh`: runs the standard CI-style pipeline across packages (pub get, `flutter test`, `flutter analyze`, `pana`, Gradle checks, and example builds).
+- `./build_tools/build.sh -d rollbar_dart test`: run a single task in one package (tasks include `pub-get`, `test`, `analyze`, `pana`, `gradle-check`, `example-android`, `example-ios`).
+- `./build_tools/clean.sh`: `flutter clean` for all packages.
+- `cd rollbar_flutter/example && flutter run`: run the Flutter example app locally.
+
+## Coding Style & Naming Conventions
+
+- Dart code follows standard formatting (2-space indent) and analyzer rules from `analysis_options.yaml` in each package.
+- Lints include `prefer_single_quotes`, `always_declare_return_types`, and `unawaited_futures` (plus `sort_child_properties_last` in `rollbar_dart`).
+- Use Dart naming conventions: `UpperCamelCase` for types, `lowerCamelCase` for members, `snake_case` for files.
+
+## Testing Guidelines
+
+- Tests are organized under each package’s `test/` directory and run via `flutter test` from that package root.
+- Android unit tests live under `rollbar_flutter/android/src/test`.
+- Add or update tests for new behavior; there is no explicit coverage gate, but regression tests are expected.
+
+## Commit & Pull Request Guidelines
+
+- Commit messages are short and imperative; optional type/scope prefixes are common (e.g., `feat: ...`, `fix(android): ...`, `doc: ...`).
+- Before opening a PR, run `./build_tools/check.sh` and note results in the PR description.
+- Link relevant issues and describe platform-specific changes (Dart vs. Flutter, Android vs. iOS) clearly.
+
+## Security & Configuration Tips
+
+- Never commit real Rollbar access tokens; use placeholders like `YOUR-ROLLBAR-ACCESSTOKEN` in examples and tests.
diff --git a/build_tools/SDK_VERSION b/build_tools/SDK_VERSION
index f94ed442..bef80db4 100644
--- a/build_tools/SDK_VERSION
+++ b/build_tools/SDK_VERSION
@@ -1 +1 @@
-3.38.5
+3.38.4
diff --git a/rollbar_flutter/example/android/app/build.gradle b/rollbar_flutter/example/android/app/build.gradle
index a1baf606..3b02d5dd 100644
--- a/rollbar_flutter/example/android/app/build.gradle
+++ b/rollbar_flutter/example/android/app/build.gradle
@@ -1,3 +1,8 @@
+plugins {
+    id "com.android.application"
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
 def localProperties = new Properties()
 def localPropertiesFile = rootProject.file('local.properties')
 if (localPropertiesFile.exists()) {
@@ -6,11 +11,6 @@ if (localPropertiesFile.exists()) {
     }
 }
 
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
 if (flutterVersionCode == null) {
     flutterVersionCode = '1'
@@ -21,9 +21,6 @@ if (flutterVersionName == null) {
     flutterVersionName = '1.0'
 }
 
-apply plugin: 'com.android.application'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
 android {
     compileSdkVersion flutter.compileSdkVersion
 
diff --git a/rollbar_flutter/example/android/build.gradle b/rollbar_flutter/example/android/build.gradle
index 2eb4306a..bc157bd1 100644
--- a/rollbar_flutter/example/android/build.gradle
+++ b/rollbar_flutter/example/android/build.gradle
@@ -1,14 +1,3 @@
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.1.2'
-    }
-}
-
 allprojects {
     repositories {
         google()
diff --git a/rollbar_flutter/example/android/settings.gradle b/rollbar_flutter/example/android/settings.gradle
index 44e62bcf..cd3231ed 100644
--- a/rollbar_flutter/example/android/settings.gradle
+++ b/rollbar_flutter/example/android/settings.gradle
@@ -1,11 +1,24 @@
-include ':app'
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
 
-def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
-def properties = new Properties()
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
 
-assert localPropertiesFile.exists()
-localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
 
-def flutterSdkPath = properties.getProperty("flutter.sdk")
-assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "7.1.2" apply false
+}
+
+include ":app"