diff --git a/openapi/openapiv2.json b/openapi/openapiv2.json
index 9a77688f..873b2838 100644
--- a/openapi/openapiv2.json
+++ b/openapi/openapiv2.json
@@ -1434,6 +1434,44 @@
         ]
       }
     },
+    "/api/v1/namespaces/{namespace}/schedule-count": {
+      "get": {
+        "summary": "CountSchedules is a visibility API to count schedules in a specific namespace.",
+        "operationId": "CountSchedules2",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1CountSchedulesResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "query",
+            "description": "Visibility query, see https://docs.temporal.io/list-filter for the syntax.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
     "/api/v1/namespaces/{namespace}/schedules": {
       "get": {
         "summary": "List all schedules in a namespace.",
@@ -5668,6 +5706,44 @@
         ]
       }
     },
+    "/namespaces/{namespace}/schedule-count": {
+      "get": {
+        "summary": "CountSchedules is a visibility API to count schedules in a specific namespace.",
+        "operationId": "CountSchedules",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1CountSchedulesResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "query",
+            "description": "Visibility query, see https://docs.temporal.io/list-filter for the syntax.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
     "/namespaces/{namespace}/schedules": {
       "get": {
         "summary": "List all schedules in a namespace.",
@@ -11478,6 +11554,40 @@
         }
       }
     },
+    "v1CountSchedulesResponse": {
+      "type": "object",
+      "properties": {
+        "count": {
+          "type": "string",
+          "format": "int64",
+          "description": "If `query` is not grouping by any field, the count is an approximate number\nof schedules that match the query.\nIf `query` is grouping by a field, the count is simply the sum of the counts\nof the groups returned in the response. This number can be smaller than the\ntotal number of schedules matching the query."
+        },
+        "groups": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "$ref": "#/definitions/v1CountSchedulesResponseAggregationGroup"
+          },
+          "description": "Contains the groups if the request is grouping by a field.\nThe list might not be complete, and the counts of each group is approximate."
+        }
+      }
+    },
+    "v1CountSchedulesResponseAggregationGroup": {
+      "type": "object",
+      "properties": {
+        "groupValues": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "$ref": "#/definitions/v1Payload"
+          }
+        },
+        "count": {
+          "type": "string",
+          "format": "int64"
+        }
+      }
+    },
     "v1CountWorkflowExecutionsResponse": {
       "type": "object",
       "properties": {
diff --git a/openapi/openapiv3.yaml b/openapi/openapiv3.yaml
index f2625c12..ac446721 100644
--- a/openapi/openapiv3.yaml
+++ b/openapi/openapiv3.yaml
@@ -1319,6 +1319,36 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Status'
+  /api/v1/namespaces/{namespace}/schedule-count:
+    get:
+      tags:
+        - WorkflowService
+      description: CountSchedules is a visibility API to count schedules in a specific namespace.
+      operationId: CountSchedules
+      parameters:
+        - name: namespace
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: query
+          in: query
+          description: Visibility query, see https://docs.temporal.io/list-filter for the syntax.
+          schema:
+            type: string
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/CountSchedulesResponse'
+        default:
+          description: Default error response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Status'
   /api/v1/namespaces/{namespace}/schedules:
     get:
       tags:
@@ -5113,6 +5143,36 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Status'
+  /namespaces/{namespace}/schedule-count:
+    get:
+      tags:
+        - WorkflowService
+      description: CountSchedules is a visibility API to count schedules in a specific namespace.
+      operationId: CountSchedules
+      parameters:
+        - name: namespace
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: query
+          in: query
+          description: Visibility query, see https://docs.temporal.io/list-filter for the syntax.
+          schema:
+            type: string
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/CountSchedulesResponse'
+        default:
+          description: Default error response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Status'
   /namespaces/{namespace}/schedules:
     get:
       tags:
@@ -8568,6 +8628,33 @@ components:
             $ref: '#/components/schemas/Payload'
         count:
           type: string
+    CountSchedulesResponse:
+      type: object
+      properties:
+        count:
+          type: string
+          description: |-
+            If `query` is not grouping by any field, the count is an approximate number
+             of schedules that match the query.
+             If `query` is grouping by a field, the count is simply the sum of the counts
+             of the groups returned in the response. This number can be smaller than the
+             total number of schedules matching the query.
+        groups:
+          type: array
+          items:
+            $ref: '#/components/schemas/CountSchedulesResponse_AggregationGroup'
+          description: |-
+            Contains the groups if the request is grouping by a field.
+             The list might not be complete, and the counts of each group is approximate.
+    CountSchedulesResponse_AggregationGroup:
+      type: object
+      properties:
+        groupValues:
+          type: array
+          items:
+            $ref: '#/components/schemas/Payload'
+        count:
+          type: string
     CountWorkflowExecutionsResponse:
       type: object
       properties:
diff --git a/temporal/api/workflowservice/v1/request_response.proto b/temporal/api/workflowservice/v1/request_response.proto
index ab1a691a..a2a6cfd0 100644
--- a/temporal/api/workflowservice/v1/request_response.proto
+++ b/temporal/api/workflowservice/v1/request_response.proto
@@ -1368,6 +1368,30 @@ message ListSchedulesResponse {
     bytes next_page_token = 2;
 }
 
+message CountSchedulesRequest {
+    string namespace = 1;
+    // Visibility query, see https://docs.temporal.io/list-filter for the syntax.
+    string query = 2;
+}
+
+message CountSchedulesResponse {
+    // If `query` is not grouping by any field, the count is an approximate number
+    // of schedules that match the query.
+    // If `query` is grouping by a field, the count is simply the sum of the counts
+    // of the groups returned in the response. This number can be smaller than the
+    // total number of schedules matching the query.
+    int64 count = 1;
+
+    // Contains the groups if the request is grouping by a field.
+    // The list might not be complete, and the counts of each group is approximate.
+    repeated AggregationGroup groups = 2;
+
+    message AggregationGroup {
+        repeated temporal.api.common.v1.Payload group_values = 1;
+        int64 count = 2;
+    }
+}
+
 // [cleanup-wv-pre-release]
 message UpdateWorkerBuildIdCompatibilityRequest {
     message AddNewCompatibleVersion {
diff --git a/temporal/api/workflowservice/v1/service.proto b/temporal/api/workflowservice/v1/service.proto
index 119b7115..085eba30 100644
--- a/temporal/api/workflowservice/v1/service.proto
+++ b/temporal/api/workflowservice/v1/service.proto
@@ -670,6 +670,16 @@ service WorkflowService {
         };
     }
 
+    // CountSchedules is a visibility API to count schedules in a specific namespace.
+    rpc CountSchedules (CountSchedulesRequest) returns (CountSchedulesResponse) {
+        option (google.api.http) = {
+            get: "/namespaces/{namespace}/schedule-count"
+            additional_bindings {
+                get: "/api/v1/namespaces/{namespace}/schedule-count"
+            }
+        };
+    }
+
     // Deprecated. Use `UpdateWorkerVersioningRules`.
     //
     // Allows users to specify sets of worker build id versions on a per task queue basis. Versions