diff --git a/TallyFlow/TallyFlow-Architecture-Diagram.html b/TallyFlow/TallyFlow-Architecture-Diagram.html
index 1c22b13..8280540 100644
--- a/TallyFlow/TallyFlow-Architecture-Diagram.html
+++ b/TallyFlow/TallyFlow-Architecture-Diagram.html
@@ -92,8 +92,8 @@
         <!-- Core Backend (Go) - CENTER -->
         <rect x="410" y="100" width="200" height="70" rx="8" fill="rgba(6, 78, 59, 0.55)" stroke="#34d399" stroke-width="2"/>
         <text x="510" y="127" fill="white" font-size="13" font-weight="700" text-anchor="middle">Core Backend</text>
-        <text x="510" y="145" fill="#94a3b8" font-size="10" text-anchor="middle">Go (Echo / gRPC)</text>
-        <text x="510" y="161" fill="#34d399" font-size="9" text-anchor="middle">REST + WebSocket API</text>
+        <text x="510" y="145" fill="#94a3b8" font-size="10" text-anchor="middle">Go (REST API)</text>
+        <text x="510" y="161" fill="#34d399" font-size="9" text-anchor="middle">REST + WebSocket</text>
 
         <!-- MongoDB (nested inside Core) - RIGHT -->
         <rect x="630" y="100" width="170" height="70" rx="6" fill="rgba(76, 29, 149, 0.6)" stroke="#a78bfa" stroke-width="1.5"/>
@@ -130,7 +130,7 @@
         <text x="810" y="408" fill="white" font-size="13" font-weight="700" text-anchor="middle">IoT</text>
         <text x="810" y="426" fill="#94a3b8" font-size="10" text-anchor="middle">Rust</text>
         <text x="810" y="444" fill="#fb923c" font-size="9" text-anchor="middle">Fixed Readers • Sensors</text>
-        <text x="810" y="460" fill="#94a3b8" font-size="8" text-anchor="middle">MQTT / HTTP / BLE • ERP integration</text>
+        <text x="810" y="460" fill="#94a3b8" font-size="8" text-anchor="middle">MQTT / HTTP • ERP integration</text>
 
         <!-- ========== CONNECTIONS ========== -->
 
diff --git a/TallyFlow/TallyFlow-Architecture.md b/TallyFlow/TallyFlow-Architecture.md
index 4602366..aafd952 100644
--- a/TallyFlow/TallyFlow-Architecture.md
+++ b/TallyFlow/TallyFlow-Architecture.md
@@ -7,7 +7,7 @@
 TallyFlow is built around exactly **five primary components**, with **Core** as the central hub that owns the database.
 
 ### 1. Core (Central)
-- **Core Backend** (Go) positioned in the center
+- **Core Backend** (Go) positioned in the center — provides the REST API
 - **Core Web UI** (Vue.js) on the left — consumes the Core API
 - Owns MongoDB (assets, tags, photos, zones, events)
 - Single API integration point for all other components
@@ -45,4 +45,4 @@ TallyFlow is built around exactly **five primary components**, with **Core** as
 - **Print** additionally supports asset registration back into Core
 - Core Web UI communicates with Core Backend via the same API used by other components
 
-This structure was verified by reviewing the actual source repositories in `~/src/`. All external modules interact exclusively through Core’s API layer.
\ No newline at end of file
+This structure was verified by reviewing the actual source repositories in `~/src/`. All external modules interact exclusively through Core’s REST API layer.
\ No newline at end of file