diff --git a/.github/workflows/build_registry.py b/.github/workflows/build_registry.py
index 4d595bc0..404443eb 100644
--- a/.github/workflows/build_registry.py
+++ b/.github/workflows/build_registry.py
@@ -2,6 +2,7 @@
 """Build aggregated registry.json from individual agent directories."""
 
 import argparse
+import base64
 import copy
 import json
 import os
@@ -513,6 +514,9 @@ def process_entry(
             f"  - {e}" for e in icon_errors
         ]
     entry["icon"] = f"{base_url}/{entry_id}.svg"
+    entry["icon_data"] = (
+        "data:image/svg+xml;base64," + base64.b64encode(icon_path.read_bytes()).decode()
+    )
 
     return entry, []
 
diff --git a/agent.schema.json b/agent.schema.json
index 3f2303f4..0bb56bd0 100644
--- a/agent.schema.json
+++ b/agent.schema.json
@@ -51,6 +51,10 @@
       "type": "string",
       "description": "Icon URL (set automatically by the build from the required icon.svg file)"
     },
+    "icon_data": {
+      "type": "string",
+      "description": "Icon as a base64-encoded data URI (set automatically by the build from the required icon.svg file)"
+    },
     "distribution": {
       "type": "object",
       "minProperties": 1,