diff --git a/hookdeck/api.py b/hookdeck/api.py
index 968cf2d..93a4ef0 100644
--- a/hookdeck/api.py
+++ b/hookdeck/api.py
@@ -229,6 +229,18 @@ async def queue_depth(
     async def list_issues(self, **params: Any) -> Any:
         return await self.request("GET", "/issues", params=params)
 
+    async def count_issues(self, **params: Any) -> int:
+        """How many issues match, in total rather than on a page.
+
+        The list endpoints paginate and their ``count`` is the page's own size,
+        so counting from a list means counting to whatever limit was asked for.
+        Issues have a dedicated count endpoint; events do not.
+        """
+        result = await self.request("GET", "/issues/count", params=params)
+        if isinstance(result, dict):
+            return int(result.get("count") or 0)
+        return 0
+
 
 def run_sync(coro: Any) -> Any:
     """Run *coro* from synchronous CLI code."""
diff --git a/hookdeck/tools.py b/hookdeck/tools.py
index 3ab417f..d6e9618 100644
--- a/hookdeck/tools.py
+++ b/hookdeck/tools.py
@@ -22,6 +22,11 @@
 
 TOOLSET = "hookdeck"
 
+#: How many failed events `hookdeck_queue_status` counts before giving up and
+#: reporting a floor. High enough that a real inbox is counted exactly, low
+#: enough that a badly broken one does not stall the tool.
+FAILED_SCAN_LIMIT = 100
+
 
 def _run(coro: Any) -> Any:
     """Run *coro* from a synchronous tool handler.
@@ -140,13 +145,18 @@ def hookdeck_queue_status(_args: dict) -> str:
     async def _go() -> str:
         async with HookdeckAPI() as api:
             depth = await api.queue_depth()
-            failed = await api.list_events(status="FAILED", limit=1)
-            issues = await api.list_issues(status="OPENED", limit=1)
+            failed = await api.list_events(status="FAILED", limit=FAILED_SCAN_LIMIT)
+            open_issues = await api.count_issues(status="OPENED")
+        seen = len(_models(failed))
         return json.dumps(
             {
                 "queue_depth": depth,
-                "failed_events_page_count": len(_models(failed)),
-                "open_issues_page_count": len(_models(issues)),
+                "failed_events": seen,
+                # Events have no count endpoint, so this is what one page
+                # holds. Saying when it is capped stops the model reporting a
+                # ceiling as though it were a total.
+                "failed_events_is_at_least": seen >= FAILED_SCAN_LIMIT,
+                "open_issues": open_issues,
             }
         )
 
diff --git a/tests/test_tools.py b/tests/test_tools.py
index a484312..4f5f1a9 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -58,6 +58,9 @@ async def list_events(self, **kw):
     async def list_issues(self, **kw):
         return await self._record("list_issues", **kw)
 
+    async def count_issues(self, **kw):
+        return await self._record("count_issues", **kw) or 0
+
     async def get_event_raw_body(self, event_id):
         return await self._record("get_event_raw_body", event_id)
 
@@ -466,3 +469,49 @@ def test_every_required_parameter_is_a_declared_parameter():
         params = schema["function"]["parameters"]
         missing = set(params["required"]) - set(params["properties"])
         assert not missing, f"{name} requires undeclared {missing}"
+
+
+# ----------------------------------------------------------------------
+# Queue status reports numbers, not page sizes
+# ----------------------------------------------------------------------
+
+
+def test_queue_status_reports_the_real_number_of_open_issues(api):
+    # Counted from the dedicated endpoint. Counting from a listing would count
+    # to whatever limit was asked for — a project with four open issues used
+    # to be reported as one, and the model then guessed at what "1" meant.
+    api.responses["count_issues"] = 4
+    api.responses["list_events"] = {"models": []}
+    status = json.loads(call("hookdeck_queue_status"))
+
+    assert status["open_issues"] == 4
+    assert calls_named(api, "count_issues") == [
+        ("count_issues", (), {"status": "OPENED"})
+    ]
+    # The old page-size fields are gone, not merely renamed alongside.
+    assert "open_issues_page_count" not in status
+    assert "failed_events_page_count" not in status
+
+
+def test_queue_status_counts_failed_events_exactly_when_it_can(api):
+    api.responses["list_events"] = {"models": [{"id": f"evt_{i}"} for i in range(7)]}
+    status = json.loads(call("hookdeck_queue_status"))
+    assert status["failed_events"] == 7
+    assert status["failed_events_is_at_least"] is False
+
+
+def test_a_full_page_of_failures_is_flagged_as_a_floor(api):
+    # Events have no count endpoint, so a full page means "at least this
+    # many". Reporting it bare would let the model state a ceiling as a total.
+    api.responses["list_events"] = {
+        "models": [{"id": f"evt_{i}"} for i in range(tools.FAILED_SCAN_LIMIT)]
+    }
+    status = json.loads(call("hookdeck_queue_status"))
+    assert status["failed_events"] == tools.FAILED_SCAN_LIMIT
+    assert status["failed_events_is_at_least"] is True
+
+
+def test_queue_status_asks_for_more_than_one_failure(api):
+    api.responses["list_events"] = {"models": []}
+    call("hookdeck_queue_status")
+    assert calls_named(api, "list_events")[0][2]["limit"] == tools.FAILED_SCAN_LIMIT