diff --git a/app/routers/recipes.py b/app/routers/recipes.py
index f27fdb9..84eb714 100644
--- a/app/routers/recipes.py
+++ b/app/routers/recipes.py
@@ -396,3 +396,40 @@ async def ui_discard_recipe(
         '<div class="text-green-400">Recipe deleted</div>'
         '<script>setTimeout(() => window.location.href = "/recipes", 1500);</script>'
     )
+
+
+@router.post("/{recipe_id}/publish")
+async def publish_recipe(
+    recipe_id: str,
+    request: Request,
+    ctx: UserContext = Depends(require_auth),
+    recipe_service: RecipeService = Depends(get_recipe_service),
+):
+    """Publish recipe to L2 and IPFS."""
+    from ..services.cache_service import CacheService
+    from ..dependencies import get_cache_manager
+    import database
+
+    # Verify recipe exists
+    recipe = await recipe_service.get_recipe(recipe_id)
+    if not recipe:
+        raise HTTPException(404, "Recipe not found")
+
+    # Use cache service to publish (recipes are stored in cache)
+    cache_service = CacheService(database, get_cache_manager())
+    ipfs_cid, error = await cache_service.publish_to_l2(
+        content_hash=recipe_id,
+        actor_id=ctx.actor_id,
+        l2_server=ctx.l2_server,
+        auth_token=request.cookies.get("auth_token"),
+    )
+
+    if error:
+        if wants_html(request):
+            return HTMLResponse(f'<span class="text-red-400">{error}</span>')
+        raise HTTPException(400, error)
+
+    if wants_html(request):
+        return HTMLResponse(f'<span class="text-green-400">Shared: {ipfs_cid[:16]}...</span>')
+
+    return {"ipfs_cid": ipfs_cid, "published": True}
diff --git a/app/routers/runs.py b/app/routers/runs.py
index 9a828df..f7c84e7 100644
--- a/app/routers/runs.py
+++ b/app/routers/runs.py
@@ -440,3 +440,47 @@ async def ui_discard_run(
         '<div class="text-green-400">Run discarded</div>'
         '<script>setTimeout(() => window.location.href = "/runs", 1500);</script>'
     )
+
+
+@router.post("/{run_id}/publish")
+async def publish_run(
+    run_id: str,
+    request: Request,
+    ctx: UserContext = Depends(require_auth),
+    run_service: RunService = Depends(get_run_service),
+):
+    """Publish run output to L2 and IPFS."""
+    from ..services.cache_service import CacheService
+    from ..dependencies import get_cache_manager
+    import database
+
+    run = await run_service.get_run(run_id)
+    if not run:
+        raise HTTPException(404, "Run not found")
+
+    # Check if run has output
+    output_hash = run.get("output_hash")
+    if not output_hash:
+        error = "Run has no output to publish"
+        if wants_html(request):
+            return HTMLResponse(f'<span class="text-red-400">{error}</span>')
+        raise HTTPException(400, error)
+
+    # Use cache service to publish the output
+    cache_service = CacheService(database, get_cache_manager())
+    ipfs_cid, error = await cache_service.publish_to_l2(
+        content_hash=output_hash,
+        actor_id=ctx.actor_id,
+        l2_server=ctx.l2_server,
+        auth_token=request.cookies.get("auth_token"),
+    )
+
+    if error:
+        if wants_html(request):
+            return HTMLResponse(f'<span class="text-red-400">{error}</span>')
+        raise HTTPException(400, error)
+
+    if wants_html(request):
+        return HTMLResponse(f'<span class="text-green-400">Shared: {ipfs_cid[:16]}...</span>')
+
+    return {"ipfs_cid": ipfs_cid, "output_hash": output_hash, "published": True}
diff --git a/app/templates/cache/detail.html b/app/templates/cache/detail.html
index 1eff930..ea2be15 100644
--- a/app/templates/cache/detail.html
+++ b/app/templates/cache/detail.html
@@ -97,14 +97,12 @@
            class="bg-blue-600 hover:bg-blue-700 px-4 py-2 rounded font-medium">
             Download
         </a>
-        {% if not cache.ipfs_cid %}
         <button hx-post="/cache/{{ cache.content_hash }}/publish"
-                hx-target="#publish-result"
-                class="bg-gray-700 hover:bg-gray-600 px-4 py-2 rounded font-medium">
-            Publish to IPFS
+                hx-target="#share-result"
+                class="bg-purple-600 hover:bg-purple-700 px-4 py-2 rounded font-medium">
+            Share to L2
         </button>
-        <span id="publish-result"></span>
-        {% endif %}
+        <span id="share-result"></span>
     </div>
 </div>
 {% endblock %}
diff --git a/app/templates/recipes/detail.html b/app/templates/recipes/detail.html
index 839781a..23255c8 100644
--- a/app/templates/recipes/detail.html
+++ b/app/templates/recipes/detail.html
@@ -77,6 +77,16 @@
     <div class="bg-gray-900 rounded-lg p-4 border border-gray-700">
         <pre class="text-sm text-gray-300 overflow-x-auto whitespace-pre-wrap">{{ recipe.yaml }}</pre>
     </div>
+
+    <!-- Actions -->
+    <div class="flex items-center space-x-4 mt-8">
+        <button hx-post="/recipes/{{ recipe.recipe_id }}/publish"
+                hx-target="#share-result"
+                class="bg-purple-600 hover:bg-purple-700 px-4 py-2 rounded font-medium">
+            Share to L2
+        </button>
+        <span id="share-result"></span>
+    </div>
 </div>
 
 <script>
diff --git a/app/templates/runs/detail.html b/app/templates/runs/detail.html
index 32a05d1..f080606 100644
--- a/app/templates/runs/detail.html
+++ b/app/templates/runs/detail.html
@@ -22,6 +22,13 @@
         {% if run.cached %}
         <span class="bg-purple-900 text-purple-300 px-3 py-1 rounded text-sm">Cached</span>
         {% endif %}
+        <div class="flex-grow"></div>
+        <button hx-post="/runs/{{ run.run_id }}/publish"
+                hx-target="#share-result"
+                class="bg-purple-600 hover:bg-purple-700 px-3 py-1 rounded text-sm font-medium">
+            Share to L2
+        </button>
+        <span id="share-result"></span>
     </div>
 
     <!-- Info Grid -->