diff --git a/server.py b/server.py
index 4ac2bf2..2160ffc 100644
--- a/server.py
+++ b/server.py
@@ -1089,13 +1089,10 @@ async def run_detail(run_id: str, request: Request):
                 publish_html = f'''
                 <div class="border-t border-dark-500 pt-6 mt-6">
                     <h2 class="text-lg font-semibold text-white mb-3">Publish to L2</h2>
-                    <p class="text-sm text-gray-400 mb-4">Register this transformation output on the L2 ActivityPub server.</p>
+                    <p class="text-sm text-gray-400 mb-4">Register this run (inputs, recipe, output) on the L2 ActivityPub server. Assets are identified by their content hash.</p>
                     <div id="publish-result"></div>
                     <form hx-post="/ui/publish-run/{run.run_id}" hx-target="#publish-result" hx-swap="innerHTML"
                           class="flex flex-wrap gap-3 items-center">
-                        <input type="text" name="output_name" value="{run.output_name}"
-                               placeholder="Asset name" required
-                               class="px-4 py-2 bg-dark-600 border border-dark-500 rounded-lg text-white placeholder-gray-500 focus:border-blue-500 focus:outline-none min-w-[200px]">
                         <button type="submit"
                                 class="px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white font-medium rounded-lg transition-colors">
                             Publish to L2
@@ -3855,8 +3852,8 @@ async def logout():
 
 
 @app.post("/ui/publish-run/{run_id}", response_class=HTMLResponse)
-async def ui_publish_run(run_id: str, request: Request, output_name: str = Form(...)):
-    """Publish a run to L2 from the web UI."""
+async def ui_publish_run(run_id: str, request: Request):
+    """Publish a run to L2 from the web UI. Assets are named by content_hash."""
     ctx = await get_user_context_from_cookie(request)
     if not ctx:
         return HTMLResponse('<div class="error">Not logged in</div>')
@@ -3871,12 +3868,12 @@ async def ui_publish_run(run_id: str, request: Request, output_name: str = Form(
         return HTMLResponse('<div class="bg-red-900/50 border border-red-700 text-red-300 px-4 py-3 rounded-lg">Run not found</div>')
 
     # Call L2 to publish the run, including this L1's public URL
-    # Longer timeout because L2 calls back to L1 to fetch run details
+    # Assets are named by their content_hash - no output_name needed
     l2_server = ctx.l2_server
     try:
         resp = http_requests.post(
             f"{l2_server}/assets/record-run",
-            json={"run_id": run_id, "output_name": output_name, "l1_server": L1_PUBLIC_URL},
+            json={"run_id": run_id, "l1_server": L1_PUBLIC_URL},
             headers={"Authorization": f"Bearer {token}"},
             timeout=30
         )
@@ -3920,10 +3917,12 @@ async def ui_publish_run(run_id: str, request: Request, output_name: str = Form(
 
         # Use HTTPS for L2 links
         l2_https = l2_server.replace("http://", "https://")
+        asset_name = result["asset"]["name"]
+        short_name = asset_name[:16] + "..." if len(asset_name) > 20 else asset_name
         return HTMLResponse(f'''
             <div class="bg-green-900/50 border border-green-700 text-green-300 px-4 py-3 rounded-lg mb-4">
-                Published to L2 as <strong>{result["asset"]["name"]}</strong>!
-                <a href="{l2_https}/asset/{result["asset"]["name"]}" target="_blank" class="underline">View on L2</a>
+                Published to L2 as <strong>{short_name}</strong>!
+                <a href="{l2_https}/assets/{asset_name}" target="_blank" class="underline">View on L2</a>
             </div>
         ''')
     except http_requests.exceptions.HTTPError as e: