diff --git a/gates/handlers.py b/gates/handlers.py
new file mode 100644
index 0000000..9e9e1b7
--- /dev/null
+++ b/gates/handlers.py
@@ -0,0 +1,26 @@
+"""Pure request handlers — no aiohttp. Each returns the updated manifest dict."""
+from . import pool
+
+
+def handle_add(base, pool_id, data, ext, ts=0):
+    return pool.add_image(base, pool_id, data, ts=ts)
+
+
+def handle_remove(base, pool_id, index):
+    return pool.remove_slot(base, pool_id, index)
+
+
+def handle_active(base, pool_id, index):
+    return pool.set_active(base, pool_id, index)
+
+
+def handle_label(base, pool_id, index, label):
+    return pool.set_label(base, pool_id, index, label)
+
+
+def handle_list(base, pool_id):
+    return pool.read_manifest(base, pool_id)
+
+
+def handle_set_mask(base, pool_id, index, mask_png_bytes):
+    return pool.set_mask(base, pool_id, index, mask_png_bytes)  # Task 12
diff --git a/gates/routes.py b/gates/routes.py
index 91f44aa..e22f8ab 100644
--- a/gates/routes.py
+++ b/gates/routes.py
@@ -1 +1,51 @@
-# gates/routes.py — stub (filled in Task 10)
+"""aiohttp routes for the Image Pool node. Imported only inside ComfyUI."""
+import json
+from aiohttp import web
+from server import PromptServer
+from . import handlers
+from .gates_compat import grid_pool_base
+
+routes = PromptServer.instance.routes
+
+
+def _base():
+    return grid_pool_base()
+
+
+@routes.post("/grid_pool/add")
+async def _add(request):
+    reader = await request.multipart()
+    pool_id, ts, data = "default", 0, None
+    async for part in reader:
+        if part.name == "pool_id":
+            pool_id = (await part.text())
+        elif part.name == "ts":
+            ts = int(await part.text())
+        elif part.name == "image":
+            data = await part.read(decode=False)
+    m = handlers.handle_add(_base(), pool_id, data, "png", ts=ts)
+    return web.json_response(m)
+
+
+@routes.post("/grid_pool/remove")
+async def _remove(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_remove(_base(), body["pool_id"], int(body["index"])))
+
+
+@routes.post("/grid_pool/active")
+async def _active(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_active(_base(), body["pool_id"], int(body["index"])))
+
+
+@routes.post("/grid_pool/label")
+async def _label(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_label(_base(), body["pool_id"], int(body["index"]), body["label"]))
+
+
+@routes.get("/grid_pool/list")
+async def _list(request):
+    pool_id = request.query.get("pool_id", "default")
+    return web.json_response(handlers.handle_list(_base(), pool_id))
diff --git a/tests/test_routes_logic.py b/tests/test_routes_logic.py
new file mode 100644
index 0000000..1a48e17
--- /dev/null
+++ b/tests/test_routes_logic.py
@@ -0,0 +1,23 @@
+import io
+from PIL import Image
+from gates import handlers
+
+
+def _png_bytes(color=(1, 2, 3)):
+    b = io.BytesIO(); Image.new("RGB", (4, 4), color).save(b, "PNG"); return b.getvalue()
+
+
+def test_handle_add_then_list(tmp_path):
+    base = str(tmp_path)
+    m = handlers.handle_add(base, "p1", _png_bytes(), "png", ts=5)
+    assert len(m["slots"]) == 1
+    assert handlers.handle_list(base, "p1")["slots"][0]["image"] == "img_0001.png"
+
+
+def test_handle_active_label_remove(tmp_path):
+    base = str(tmp_path)
+    handlers.handle_add(base, "p1", _png_bytes(), "png", ts=1)
+    handlers.handle_add(base, "p1", _png_bytes(), "png", ts=2)
+    assert handlers.handle_active(base, "p1", 1)["active"] == 1
+    assert handlers.handle_label(base, "p1", 0, "hi")["slots"][0]["label"] == "hi"
+    assert len(handlers.handle_remove(base, "p1", 0)["slots"]) == 1