diff --git a/clients/ruby/lib/vizzly.rb b/clients/ruby/lib/vizzly.rb
index e095f6fc..363f067f 100644
--- a/clients/ruby/lib/vizzly.rb
+++ b/clients/ruby/lib/vizzly.rb
@@ -55,6 +55,7 @@ def screenshot(name, image_data, options = {})
       payload = {
         name: name,
         image: image_base64,
+        type: 'base64',
         buildId: ENV.fetch('VIZZLY_BUILD_ID', nil),
         threshold: options[:threshold] || 0,
         fullPage: options[:full_page] || false,
diff --git a/clients/ruby/test/integration_test.rb b/clients/ruby/test/integration_test.rb
index ecac330a..6c2bf6e1 100644
--- a/clients/ruby/test/integration_test.rb
+++ b/clients/ruby/test/integration_test.rb
@@ -39,8 +39,9 @@ def test_screenshot_with_running_server
     result = Vizzly.screenshot('test-screenshot', image_data,
                                properties: { browser: 'chrome', viewport: { width: 1920, height: 1080 } })
 
-    assert result
-    assert_equal true, result['success']
+    assert result, 'Expected result to be non-nil'
+    # TDD mode returns status: 'new' for first screenshot, 'match' for subsequent
+    assert %w[new match].include?(result['status']), "Expected status 'new' or 'match', got: #{result['status']}"
   end
 
   def test_screenshot_with_auto_discovery
@@ -57,8 +58,9 @@ def test_screenshot_with_auto_discovery
     image_data = create_test_png
     result = client.screenshot('auto-discovered', image_data)
 
-    assert result
-    assert_equal true, result['success']
+    assert result, 'Expected result to be non-nil'
+    # TDD mode returns status: 'new' for first screenshot, 'match' for subsequent
+    assert %w[new match].include?(result['status']), "Expected status 'new' or 'match', got: #{result['status']}"
   end
 
   private
diff --git a/clients/swift/Sources/Vizzly/VizzlyClient.swift b/clients/swift/Sources/Vizzly/VizzlyClient.swift
index 588fca50..8483a39b 100644
--- a/clients/swift/Sources/Vizzly/VizzlyClient.swift
+++ b/clients/swift/Sources/Vizzly/VizzlyClient.swift
@@ -79,6 +79,7 @@ public final class VizzlyClient {
         var payload: [String: Any] = [
             "name": name,
             "image": imageBase64,
+            "type": "base64",
             "threshold": threshold,
             "fullPage": fullPage
         ]
diff --git a/clients/vitest/src/setup.js b/clients/vitest/src/setup.js
index 7ba14d1b..ac455082 100644
--- a/clients/vitest/src/setup.js
+++ b/clients/vitest/src/setup.js
@@ -60,6 +60,7 @@ async function toMatchScreenshot(element, name, options = {}) {
       body: JSON.stringify({
         name: screenshotName,
         image: screenshotPath, // Send file path directly
+        type: 'file-path',
         buildId: buildId || null,
         threshold,
         fullPage,
diff --git a/src/sdk/index.js b/src/sdk/index.js
index 08f30805..2b46e90a 100644
--- a/src/sdk/index.js
+++ b/src/sdk/index.js
@@ -252,6 +252,7 @@ export class VizzlySDK extends EventEmitter {
       buildId,
       name,
       image: imageBase64,
+      type: 'base64',
       properties: options.properties || {},
     };