diff --git a/mercurial/httppeer.py b/mercurial/httppeer.py
--- a/mercurial/httppeer.py
+++ b/mercurial/httppeer.py
@@ -382,6 +382,7 @@ class httppeer(wireprotov1peer.wirepeer)
         self._path = path
         self._url = url
         self._caps = caps
+        self.limitedarguments = caps is not None and 'httppostargs' not in caps
         self._urlopener = opener
         self._requestbuilder = requestbuilder
 
@@ -750,6 +751,9 @@ class httpv2executor(object):
 
 @interfaceutil.implementer(repository.ipeerv2)
 class httpv2peer(object):
+
+    limitedarguments = False
+
     def __init__(self, ui, repourl, apipath, opener, requestbuilder,
                  apidescriptor):
         self.ui = ui
diff --git a/mercurial/repository.py b/mercurial/repository.py
--- a/mercurial/repository.py
+++ b/mercurial/repository.py
@@ -291,6 +291,10 @@ class ipeercommandexecutor(interfaceutil
 class ipeerrequests(interfaceutil.Interface):
     """Interface for executing commands on a peer."""
 
+    limitedarguments = interfaceutil.Attribute(
+        """True if the peer cannot receive large argument value for commands."""
+    )
+
     def commandexecutor():
         """A context manager that resolves to an ipeercommandexecutor.
 
@@ -329,6 +333,8 @@ class ipeerv2(ipeerconnection, ipeercapa
 class peer(object):
     """Base class for peer repositories."""
 
+    limitedarguments = False
+
     def capable(self, name):
         caps = self.capabilities()
         if name in caps: