diff --git a/README.md b/README.md
index cec57e5d3..4ceeb628c 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ Check `tests` and `examples` for more examples.
 - [x] Implement IN as regular topic
 - [x] Add Connection.peek() to monitor past messages from all topics
 - [x] Enable resuming PubSub from the "middle" of the computation
+- [ ] Add test for .peek()
 - [ ] Move tracking of inflight processes/messages to Connection
   - [ ] Use this to build retry mechanism, where any inflight messages are moved back to the respective topics when restarting
 - [ ] Detect cycles (aka. infinite loops) and throw an error
diff --git a/permchain/connection.py b/permchain/connection.py
index d988e5862..4f960e635 100644
--- a/permchain/connection.py
+++ b/permchain/connection.py
@@ -13,10 +13,12 @@ class LogMessage(TypedDict):
 
 class PubSubConnection(ABC):
     def full_topic_name(self, prefix: str, topic_name: str) -> str:
+        """Return the full topic name for a given prefix and topic name."""
         return f"{prefix}:{topic_name}"
 
     @abstractmethod
     def iterate(self, prefix: str, topic_name: str) -> Iterator[Any]:
+        """Iterate over all currently queued messages for a topic, consuming them."""
         ...
 
     # TODO add aiterate() method