diff --git a/docs/src/index.md b/docs/src/index.md
index 695ac1e..d9a9d16 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -139,3 +139,44 @@
     - Subset of React components to typecheck against
 
   - Aggregated queries and group by? Joins?
+
+  - Middleware interface / higher-order nodes
+
+    - the idea would be it would be solely dependent on / modify another
+    - i think this would also want to pair with some notion of app-private nodes
+
+    - for example, use cases would be:
+
+      - version control?
+
+        - update "hook" for this would create a third node and append it
+
+          ```
+          const newPrev = new Node()
+          newPrev.prev = curr.prev
+          curr.prev = newPrev
+          ```
+
+          creates like a linked list of version updates
+
+  - Pub/Sub?
+
+    - i think this could use the same interface as the query interface, so you
+      would just "listen" to updates there, rather than just getting a single
+      snapshot of it
+
+    - findNodes interface:
+      - Params
+        - mode, one of "single", "many", "stream"
+          - single: return a single document
+          - many: return many documents (may limit with take)
+            - TODO: what does a cursor look like?
+          - stream: open a socket and keep listening for
+            - streamType, one of "inserts" or "updates"
+        - metadata: object
+          - `{ [keyName] : { has?: boolean, value?: [value], select: boolean } }`
+            - has means if it's not in there, then filter it out
+            - value means that if the value's not exactly a match, then filter
+              it out
+            - could this include valueMatches, which runs a custom predicate?
+            - select means should this be included in the result
diff --git a/src/core/db.ts b/src/core/db.ts
index 9755e8e..be0c116 100644
--- a/src/core/db.ts
+++ b/src/core/db.ts
@@ -97,6 +97,8 @@ export class Database {
         }
       }
 
+      // TODO: Notify pubsub streams that this has been created?
+
       return createdNode;
     });
   }
@@ -125,6 +127,8 @@ export class Database {
       }
     });
 
+    // TODO: Notify pubsub streams that this has updated?
+
     return await this.prisma.node.findFirst({
       where: { id: request.id },
       select: { id: true, label: true, metadata: true },
diff --git a/src/routes/calendar/index.tsx b/src/routes/calendar/index.tsx
new file mode 100644
index 0000000..3443961
--- /dev/null
+++ b/src/routes/calendar/index.tsx
@@ -0,0 +1,3 @@
+export default function Calendar() {
+  return <>Calendar</>;
+}