diff --git a/tools/connectors/account.py b/tools/connectors/account.py
index bbeb064419..91aac30e6e 100644
--- a/tools/connectors/account.py
+++ b/tools/connectors/account.py
@@ -23,8 +23,9 @@ class AccountOperationStart:
     failed: bool = False
 
 
-def _matching_open_operation(names: list[str], *, profile_home: str | None) -> ConnectionOperation | None:
-    matches = [live.find_target(name, profile_home=profile_home) for name in names]
+def _matching_open_operation(names: list[str], *, alias: str | None,
+                             profile_home: str | None) -> ConnectionOperation | None:
+    matches = [live.find_target(name, alias=alias, profile_home=profile_home) for name in names]
     first = next((operation for operation in matches if operation is not None), None)
     if first is None:
         return None
@@ -38,12 +39,14 @@ def find_or_start_operation(
     *,
     action: str,
     profile_home: str | None,
+    alias: str | None = None,
 ) -> AccountOperationStart:
+    """``alias`` names the one account of ``names[0]`` to connect; the caller passes one name with it."""
     with _start_lock:
-        if operation := _matching_open_operation(names, profile_home=profile_home):
+        if operation := _matching_open_operation(names, alias=alias, profile_home=profile_home):
             return AccountOperationStart(operation=operation, started=False)
         operation = ConnectionOperation(
-            [Target(name, "connector", action) for name in names],
+            [Target(name, "connector", action, alias=alias) for name in names],
             session_key=f"account:{uuid.uuid4().hex}",
         )
         started = AccountOperationStart(operation=operation, started=True)
diff --git a/tools/connectors/live.py b/tools/connectors/live.py
index cd6ff235bb..c90695c631 100644
--- a/tools/connectors/live.py
+++ b/tools/connectors/live.py
@@ -63,12 +63,16 @@ def get_by_op_id(op_id: str, *, profile_home: Optional[str] = None) -> Optional[
                      if key == profile_key and operation.op_id == op_id and not operation.settled), None)
 
 
-def find_target(name: str, *, profile_home: Optional[str] = None) -> Optional[ConnectionOperation]:
+def find_target(name: str, *, alias: Optional[str] = None,
+                profile_home: Optional[str] = None) -> Optional[ConnectionOperation]:
+    """The open operation connecting this account: the connector ``name`` and the same ``alias``,
+    so an open operation for one account is never reused for another account of the same app."""
     profile_key = _profile_key(profile_home)
     with _lock:
         return next((operation for (key, _), operation in _open.items()
                      if key == profile_key and not operation.settled
-                     and (target := operation.target(name)) is not None and target.kind == "connector"), None)
+                     and (target := operation.target(name)) is not None and target.kind == "connector"
+                     and target.alias == alias), None)
 
 
 def close(operation: ConnectionOperation) -> None:
diff --git a/tools/connectors/operation.py b/tools/connectors/operation.py
index 3cd35b0ca2..c9caf4e757 100644
--- a/tools/connectors/operation.py
+++ b/tools/connectors/operation.py
@@ -41,6 +41,8 @@ class Target:
     extra: dict[str, Any] = field(default_factory=dict)
     # The install step an ``initiated`` catalog row is in (an ``InstallPhase`` id); drawn only then.
     phase: Optional[str] = None
+    # The name of the one hosted account this target connects or repairs; absent for the connector's default account.
+    alias: Optional[str] = None
 
     @property
     def resolved(self) -> bool:
@@ -49,6 +51,8 @@ class Target:
     def snapshot(self, *, with_url: bool = True) -> dict[str, Any]:
         out: dict[str, Any] = {"name": self.name, "kind": self.kind, "action": self.action, "state": self.state.value,
                                "resolved": self.resolved}
+        if self.alias:
+            out["alias"] = self.alias
         if self.phase and self.state == TargetState.initiated:
             out["phase"] = self.phase
         if self.detail: