diff --git a/openapi/openapiv2.json b/openapi/openapiv2.json
index 917fce76c..df110d861 100644
--- a/openapi/openapiv2.json
+++ b/openapi/openapiv2.json
@@ -4134,6 +4134,63 @@
         ]
       }
     },
+    "/api/v1/namespaces/{namespace}/workflows/{execution.workflowId}/result": {
+      "get": {
+        "summary": "GetWorkflowExecutionResult returns the result of a workflow execution. If the workflow\nis still running, returns a NotCompleted response and optionally registers callbacks\nto be invoked when the workflow completes.",
+        "operationId": "GetWorkflowExecutionResult2",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1GetWorkflowExecutionResultResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "execution.workflowId",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "execution.runId",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "requestId",
+            "description": "A unique identifier for this create request for idempotence. Typically UUIDv4.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "identity",
+            "description": "The identity of the client who initiated this request.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
     "/api/v1/namespaces/{namespace}/workflows/{execution.workflowId}/trigger-rule": {
       "post": {
         "summary": "TriggerWorkflowRule allows to:\n * trigger existing rule for a specific workflow execution;\n * trigger rule for a specific workflow execution without creating a rule;\nThis is useful for one-off operations.",
@@ -9609,6 +9666,63 @@
         ]
       }
     },
+    "/namespaces/{namespace}/workflows/{execution.workflowId}/result": {
+      "get": {
+        "summary": "GetWorkflowExecutionResult returns the result of a workflow execution. If the workflow\nis still running, returns a NotCompleted response and optionally registers callbacks\nto be invoked when the workflow completes.",
+        "operationId": "GetWorkflowExecutionResult",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1GetWorkflowExecutionResultResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "execution.workflowId",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "execution.runId",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "requestId",
+            "description": "A unique identifier for this create request for idempotence. Typically UUIDv4.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "name": "identity",
+            "description": "The identity of the client who initiated this request.",
+            "in": "query",
+            "required": false,
+            "type": "string"
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
     "/namespaces/{namespace}/workflows/{execution.workflowId}/trigger-rule": {
       "post": {
         "summary": "TriggerWorkflowRule allows to:\n * trigger existing rule for a specific workflow execution;\n * trigger rule for a specific workflow execution without creating a rule;\nThis is useful for one-off operations.",
@@ -10706,6 +10820,17 @@
       },
       "description": "Target a worker polling on a Nexus task queue in a specific namespace."
     },
+    "GetWorkflowExecutionResultResponseNotCompleted": {
+      "type": "object"
+    },
+    "GetWorkflowExecutionResultResponseSuccess": {
+      "type": "object",
+      "properties": {
+        "result": {
+          "$ref": "#/definitions/v1Payloads"
+        }
+      }
+    },
     "LinkActivity": {
       "type": "object",
       "properties": {
@@ -12969,7 +13094,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -13032,7 +13157,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -13073,6 +13198,58 @@
       },
       "description": "When StartWorkflowExecution uses the conflict policy WORKFLOW_ID_CONFLICT_POLICY_USE_EXISTING and\nthere is already an existing running workflow, OnConflictOptions defines actions to be taken on\nthe existing running workflow. In this case, it will create a WorkflowExecutionOptionsUpdatedEvent\nhistory event in the running workflow with the changes requested in this object."
     },
+    "failureV1Failure": {
+      "type": "object",
+      "properties": {
+        "message": {
+          "type": "string"
+        },
+        "source": {
+          "type": "string",
+          "description": "The source this Failure originated in, e.g. TypeScriptSDK / JavaSDK\nIn some SDKs this is used to rehydrate the stack trace into an exception object."
+        },
+        "stackTrace": {
+          "type": "string"
+        },
+        "encodedAttributes": {
+          "$ref": "#/definitions/v1Payload",
+          "description": "Alternative way to supply `message` and `stack_trace` and possibly other attributes, used for encryption of\nerrors originating in user code which might contain sensitive information.\nThe `encoded_attributes` Payload could represent any serializable object, e.g. JSON object or a `Failure` proto\nmessage.\n\nSDK authors:\n- The SDK should provide a default `encodeFailureAttributes` and `decodeFailureAttributes` implementation that:\n  - Uses a JSON object to represent `{ message, stack_trace }`.\n  - Overwrites the original message with \"Encoded failure\" to indicate that more information could be extracted.\n  - Overwrites the original stack_trace with an empty string.\n  - The resulting JSON object is converted to Payload using the default PayloadConverter and should be processed\n    by the user-provided PayloadCodec\n\n- If there's demand, we could allow overriding the default SDK implementation to encode other opaque Failure attributes."
+        },
+        "cause": {
+          "$ref": "#/definitions/failureV1Failure"
+        },
+        "applicationFailureInfo": {
+          "$ref": "#/definitions/v1ApplicationFailureInfo"
+        },
+        "timeoutFailureInfo": {
+          "$ref": "#/definitions/v1TimeoutFailureInfo"
+        },
+        "canceledFailureInfo": {
+          "$ref": "#/definitions/v1CanceledFailureInfo"
+        },
+        "terminatedFailureInfo": {
+          "$ref": "#/definitions/v1TerminatedFailureInfo"
+        },
+        "serverFailureInfo": {
+          "$ref": "#/definitions/v1ServerFailureInfo"
+        },
+        "resetWorkflowFailureInfo": {
+          "$ref": "#/definitions/v1ResetWorkflowFailureInfo"
+        },
+        "activityFailureInfo": {
+          "$ref": "#/definitions/v1ActivityFailureInfo"
+        },
+        "childWorkflowExecutionFailureInfo": {
+          "$ref": "#/definitions/v1ChildWorkflowExecutionFailureInfo"
+        },
+        "nexusOperationExecutionFailureInfo": {
+          "$ref": "#/definitions/v1NexusOperationFailureInfo"
+        },
+        "nexusHandlerFailureInfo": {
+          "$ref": "#/definitions/v1NexusHandlerFailureInfo"
+        }
+      }
+    },
     "protobufAny": {
       "type": "object",
       "properties": {
@@ -13187,7 +13364,7 @@
           "description": "Time when the activity transitioned to a closed state."
         },
         "lastFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Failure details from the last failed attempt."
         },
         "lastWorkerIdentity": {
@@ -13317,7 +13494,7 @@
           "description": "The result if the activity completed successfully."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The failure if the activity completed unsuccessfully."
         }
       },
@@ -13507,7 +13684,7 @@
       "type": "object",
       "properties": {
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "title": "Failure details"
         },
         "scheduledEventId": {
@@ -13609,7 +13786,7 @@
           "title": "Starting at 1, the number of times this task has been attempted"
         },
         "lastFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Will be set to the most recent failure details, if this task has previously failed and then\nbeen retried."
         },
         "workerVersion": {
@@ -13627,7 +13804,7 @@
       "type": "object",
       "properties": {
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "If this activity had failed, was retried, and then timed out, that failure is stored as the\n`cause` in here."
         },
         "scheduledEventId": {
@@ -14195,7 +14372,7 @@
       "type": "object",
       "properties": {
         "failure": {
-          "$ref": "#/definitions/v1Failure"
+          "$ref": "#/definitions/failureV1Failure"
         },
         "namespace": {
           "type": "string",
@@ -14980,7 +15157,7 @@
           "description": "The result if the operation completed successfully."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The failure if the operation completed unsuccessfully."
         },
         "longPollToken": {
@@ -15360,58 +15537,6 @@
       },
       "title": "Represents a historical replication status of a Namespace"
     },
-    "v1Failure": {
-      "type": "object",
-      "properties": {
-        "message": {
-          "type": "string"
-        },
-        "source": {
-          "type": "string",
-          "description": "The source this Failure originated in, e.g. TypeScriptSDK / JavaSDK\nIn some SDKs this is used to rehydrate the stack trace into an exception object."
-        },
-        "stackTrace": {
-          "type": "string"
-        },
-        "encodedAttributes": {
-          "$ref": "#/definitions/v1Payload",
-          "description": "Alternative way to supply `message` and `stack_trace` and possibly other attributes, used for encryption of\nerrors originating in user code which might contain sensitive information.\nThe `encoded_attributes` Payload could represent any serializable object, e.g. JSON object or a `Failure` proto\nmessage.\n\nSDK authors:\n- The SDK should provide a default `encodeFailureAttributes` and `decodeFailureAttributes` implementation that:\n  - Uses a JSON object to represent `{ message, stack_trace }`.\n  - Overwrites the original message with \"Encoded failure\" to indicate that more information could be extracted.\n  - Overwrites the original stack_trace with an empty string.\n  - The resulting JSON object is converted to Payload using the default PayloadConverter and should be processed\n    by the user-provided PayloadCodec\n\n- If there's demand, we could allow overriding the default SDK implementation to encode other opaque Failure attributes."
-        },
-        "cause": {
-          "$ref": "#/definitions/v1Failure"
-        },
-        "applicationFailureInfo": {
-          "$ref": "#/definitions/v1ApplicationFailureInfo"
-        },
-        "timeoutFailureInfo": {
-          "$ref": "#/definitions/v1TimeoutFailureInfo"
-        },
-        "canceledFailureInfo": {
-          "$ref": "#/definitions/v1CanceledFailureInfo"
-        },
-        "terminatedFailureInfo": {
-          "$ref": "#/definitions/v1TerminatedFailureInfo"
-        },
-        "serverFailureInfo": {
-          "$ref": "#/definitions/v1ServerFailureInfo"
-        },
-        "resetWorkflowFailureInfo": {
-          "$ref": "#/definitions/v1ResetWorkflowFailureInfo"
-        },
-        "activityFailureInfo": {
-          "$ref": "#/definitions/v1ActivityFailureInfo"
-        },
-        "childWorkflowExecutionFailureInfo": {
-          "$ref": "#/definitions/v1ChildWorkflowExecutionFailureInfo"
-        },
-        "nexusOperationExecutionFailureInfo": {
-          "$ref": "#/definitions/v1NexusOperationFailureInfo"
-        },
-        "nexusHandlerFailureInfo": {
-          "$ref": "#/definitions/v1NexusHandlerFailureInfo"
-        }
-      }
-    },
     "v1FetchWorkerConfigResponse": {
       "type": "object",
       "properties": {
@@ -15655,6 +15780,40 @@
         }
       }
     },
+    "v1GetWorkflowExecutionResultResponse": {
+      "type": "object",
+      "properties": {
+        "execution": {
+          "$ref": "#/definitions/v1WorkflowExecution",
+          "description": "Information about the workflow execution, including the runID that this result is associated to."
+        },
+        "links": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "$ref": "#/definitions/v1Link"
+          },
+          "title": "Link to the relevant history event:\n- completion event, if the workflow has finished\n- options-updated event, if callbacks were registered on a running workflow"
+        },
+        "notCompleted": {
+          "$ref": "#/definitions/GetWorkflowExecutionResultResponseNotCompleted"
+        },
+        "success": {
+          "$ref": "#/definitions/GetWorkflowExecutionResultResponseSuccess"
+        },
+        "failure": {
+          "$ref": "#/definitions/v1GetWorkflowExecutionResultResponseFailure"
+        }
+      }
+    },
+    "v1GetWorkflowExecutionResultResponseFailure": {
+      "type": "object",
+      "properties": {
+        "failure": {
+          "$ref": "#/definitions/failureV1Failure"
+        }
+      }
+    },
     "v1Header": {
       "type": "object",
       "properties": {
@@ -16265,7 +16424,7 @@
           "$ref": "#/definitions/v1Header"
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Some uses of markers, like a local activity, could \"fail\". If they did that is recorded here."
         }
       }
@@ -16607,7 +16766,7 @@
           "description": "The `WORKFLOW_TASK_COMPLETED` event that the corresponding RequestCancelNexusOperation command was reported\nwith."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Failure details. A NexusOperationFailureInfo wrapping a CanceledFailureInfo."
         },
         "scheduledEventId": {
@@ -16641,7 +16800,7 @@
           "description": "The ID of the `NEXUS_OPERATION_SCHEDULED` event. Uniquely identifies this operation."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Cancellation details."
         },
         "requestId": {
@@ -16673,7 +16832,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -16743,7 +16902,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -16830,7 +16989,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -16967,7 +17126,7 @@
           "description": "The ID of the `NEXUS_OPERATION_SCHEDULED` event. Uniquely identifies this operation."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Failure details. A NexusOperationFailureInfo wrapping an ApplicationFailureInfo."
         },
         "requestId": {
@@ -17115,7 +17274,7 @@
           "description": "The ID of the `NEXUS_OPERATION_SCHEDULED` event. Uniquely identifies this operation."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Failure details. A NexusOperationFailureInfo wrapping a CanceledFailureInfo."
         },
         "requestId": {
@@ -17142,7 +17301,7 @@
           "$ref": "#/definitions/v1Payloads"
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure"
+          "$ref": "#/definitions/failureV1Failure"
         }
       },
       "description": "The outcome of a Workflow Update: success or failure."
@@ -17229,7 +17388,7 @@
           "format": "date-time"
         },
         "lastFailure": {
-          "$ref": "#/definitions/v1Failure"
+          "$ref": "#/definitions/failureV1Failure"
         },
         "lastWorkerIdentity": {
           "type": "string"
@@ -17367,7 +17526,7 @@
           "description": "The time when the last attempt completed."
         },
         "lastAttemptFailure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The last attempt's failure, if any."
         },
         "nextAttemptScheduleTime": {
@@ -17493,7 +17652,7 @@
           "description": "The result if the operation completed successfully."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The failure if the operation completed unsuccessfully."
         }
       }
@@ -18164,7 +18323,7 @@
           "type": "array",
           "items": {
             "type": "object",
-            "$ref": "#/definitions/v1Failure"
+            "$ref": "#/definitions/failureV1Failure"
           },
           "title": "Server validation failures could include\nlast_heartbeat_details payload is too large, request failure is too large"
         }
@@ -18177,7 +18336,7 @@
           "type": "array",
           "items": {
             "type": "object",
-            "$ref": "#/definitions/v1Failure"
+            "$ref": "#/definitions/failureV1Failure"
           },
           "title": "Server validation failures could include\nlast_heartbeat_details payload is too large, request failure is too large"
         }
@@ -20448,7 +20607,7 @@
           "$ref": "#/definitions/v1ContinueAsNewInitiator"
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "Deprecated. If a workflow's retry policy would cause a new run to start when the current one\nhas failed, this field would be populated with that failure. Now (when supported by server\nand sdk) the final event will be `WORKFLOW_EXECUTION_FAILED` with `new_execution_run_id` set."
         },
         "lastCompletionResult": {
@@ -20523,7 +20682,7 @@
       "type": "object",
       "properties": {
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "title": "Serialized result of workflow failure (ex: An exception thrown, or error returned)"
         },
         "retryState": {
@@ -20816,7 +20975,7 @@
           "$ref": "#/definitions/v1ContinueAsNewInitiator"
         },
         "continuedFailure": {
-          "$ref": "#/definitions/v1Failure"
+          "$ref": "#/definitions/failureV1Failure"
         },
         "lastCompletionResult": {
           "$ref": "#/definitions/v1Payloads"
@@ -21090,7 +21249,7 @@
           "description": "The message payload of the original request message that initiated this\nupdate."
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "description": "The cause of rejection."
         }
       }
@@ -21426,7 +21585,7 @@
           "$ref": "#/definitions/v1WorkflowTaskFailedCause"
         },
         "failure": {
-          "$ref": "#/definitions/v1Failure",
+          "$ref": "#/definitions/failureV1Failure",
           "title": "The failure details"
         },
         "identity": {
diff --git a/openapi/openapiv3.yaml b/openapi/openapiv3.yaml
index 4ada710f0..ca96e7853 100644
--- a/openapi/openapiv3.yaml
+++ b/openapi/openapiv3.yaml
@@ -3714,6 +3714,57 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Status'
+  /api/v1/namespaces/{namespace}/workflows/{execution.workflow_id}/result:
+    get:
+      tags:
+        - WorkflowService
+      description: |-
+        GetWorkflowExecutionResult returns the result of a workflow execution. If the workflow
+         is still running, returns a NotCompleted response and optionally registers callbacks
+         to be invoked when the workflow completes.
+      operationId: GetWorkflowExecutionResult
+      parameters:
+        - name: namespace
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: execution.workflow_id
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: execution.workflowId
+          in: query
+          schema:
+            type: string
+        - name: execution.runId
+          in: query
+          schema:
+            type: string
+        - name: requestId
+          in: query
+          description: A unique identifier for this create request for idempotence. Typically UUIDv4.
+          schema:
+            type: string
+        - name: identity
+          in: query
+          description: The identity of the client who initiated this request.
+          schema:
+            type: string
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GetWorkflowExecutionResultResponse'
+        default:
+          description: Default error response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Status'
   /api/v1/namespaces/{namespace}/workflows/{execution.workflow_id}/trigger-rule:
     post:
       tags:
@@ -8659,6 +8710,57 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Status'
+  /namespaces/{namespace}/workflows/{execution.workflow_id}/result:
+    get:
+      tags:
+        - WorkflowService
+      description: |-
+        GetWorkflowExecutionResult returns the result of a workflow execution. If the workflow
+         is still running, returns a NotCompleted response and optionally registers callbacks
+         to be invoked when the workflow completes.
+      operationId: GetWorkflowExecutionResult
+      parameters:
+        - name: namespace
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: execution.workflow_id
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: execution.workflowId
+          in: query
+          schema:
+            type: string
+        - name: execution.runId
+          in: query
+          schema:
+            type: string
+        - name: requestId
+          in: query
+          description: A unique identifier for this create request for idempotence. Typically UUIDv4.
+          schema:
+            type: string
+        - name: identity
+          in: query
+          description: The identity of the client who initiated this request.
+          schema:
+            type: string
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GetWorkflowExecutionResultResponse'
+        default:
+          description: Default error response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Status'
   /namespaces/{namespace}/workflows/{execution.workflow_id}/trigger-rule:
     post:
       tags:
@@ -12149,6 +12251,40 @@ components:
           type: string
           description: Will be set if there are more history events than were included in this response
           format: bytes
+    GetWorkflowExecutionResultResponse:
+      type: object
+      properties:
+        execution:
+          allOf:
+            - $ref: '#/components/schemas/WorkflowExecution'
+          description: Information about the workflow execution, including the runID that this result is associated to.
+        links:
+          type: array
+          items:
+            $ref: '#/components/schemas/Link'
+          description: |-
+            Link to the relevant history event:
+             - completion event, if the workflow has finished
+             - options-updated event, if callbacks were registered on a running workflow
+        notCompleted:
+          $ref: '#/components/schemas/GetWorkflowExecutionResultResponse_NotCompleted'
+        success:
+          $ref: '#/components/schemas/GetWorkflowExecutionResultResponse_Success'
+        failure:
+          $ref: '#/components/schemas/GetWorkflowExecutionResultResponse_Failure'
+    GetWorkflowExecutionResultResponse_Failure:
+      type: object
+      properties:
+        failure:
+          $ref: '#/components/schemas/Failure'
+    GetWorkflowExecutionResultResponse_NotCompleted:
+      type: object
+      properties: {}
+    GetWorkflowExecutionResultResponse_Success:
+      type: object
+      properties:
+        result:
+          $ref: '#/components/schemas/Payloads'
     GoogleProtobufAny:
       type: object
       properties:
diff --git a/temporal/api/workflowservice/v1/request_response.proto b/temporal/api/workflowservice/v1/request_response.proto
index f4012c73d..688a1f897 100644
--- a/temporal/api/workflowservice/v1/request_response.proto
+++ b/temporal/api/workflowservice/v1/request_response.proto
@@ -1163,6 +1163,51 @@ message DescribeWorkflowExecutionResponse {
     temporal.api.workflow.v1.WorkflowExecutionExtendedInfo workflow_extended_info = 8;
 }
 
+message GetWorkflowExecutionResultRequest {
+    string namespace = 1;
+    // For now, server will always provide the result of the latest run of the workflow_id
+    // provided even if the run_id is set here. We use WorkflowExecution message for forward
+    // compatibility if we want to enable getting the result of a specific run_id in the future.
+    temporal.api.common.v1.WorkflowExecution execution = 2;
+    // A unique identifier for this create request for idempotence. Typically UUIDv4.
+    string request_id = 3;
+    // The identity of the client who initiated this request.
+    string identity = 4;
+    // Callbacks to be called by the server when this activity reaches a terminal state.
+    // Callback addresses must be allowlisted in the server's dynamic configuration.
+    repeated temporal.api.common.v1.Callback completion_callbacks = 5;
+    // Links to be associated with this request. Note that completion_callbacks may also have
+    // associated links; links already included with a callback should not be duplicated here.
+    repeated temporal.api.common.v1.Link links = 6;
+}
+
+message GetWorkflowExecutionResultResponse {
+    // Information about the workflow execution, including the runID that this result is associated to.
+    temporal.api.common.v1.WorkflowExecution execution = 1;
+
+    // Link to the relevant history event:
+    // - completion event, if the workflow has finished
+    // - options-updated event, if callbacks were registered on a running workflow
+    repeated temporal.api.common.v1.Link links = 2;
+
+    // Completion status of the workflow, which carries relevant information for the caller.
+    oneof completion_status {
+        NotCompleted not_completed = 3;
+        Success success = 4;
+        Failure failure = 5;
+    }
+
+    message NotCompleted {}
+
+    message Success {
+        temporal.api.common.v1.Payloads result = 1;
+    }
+
+    message Failure {
+        temporal.api.failure.v1.Failure failure = 1;
+    }
+}
+
 // (-- api-linter: core::0203::optional=disabled
 //     aip.dev/not-precedent: field_behavior annotation not available in our gogo fork --)
 message DescribeTaskQueueRequest {
diff --git a/temporal/api/workflowservice/v1/service.proto b/temporal/api/workflowservice/v1/service.proto
index b804f3f03..0153a64de 100644
--- a/temporal/api/workflowservice/v1/service.proto
+++ b/temporal/api/workflowservice/v1/service.proto
@@ -2023,4 +2023,20 @@ service WorkflowService {
     // (-- api-linter: core::0127::http-annotation=disabled
     //     aip.dev/not-precedent: Nexus operation deletion not exposed to HTTP, users should use cancel or terminate. --)
     rpc DeleteNexusOperationExecution (DeleteNexusOperationExecutionRequest) returns (DeleteNexusOperationExecutionResponse) {}
+
+    // GetWorkflowExecutionResult returns the result of a workflow execution. If the workflow
+    // is still running, returns a NotCompleted response and optionally registers callbacks
+    // to be invoked when the workflow completes.
+    rpc GetWorkflowExecutionResult (GetWorkflowExecutionResultRequest) returns (GetWorkflowExecutionResultResponse) {
+        option (google.api.http) = {
+            get: "/namespaces/{namespace}/workflows/{execution.workflow_id}/result"
+            additional_bindings {
+                get: "/api/v1/namespaces/{namespace}/workflows/{execution.workflow_id}/result"
+            }
+        };
+        option (temporal.api.protometa.v1.request_header) = {
+            header: "temporal-resource-id"
+            value: "workflow:{execution.workflow_id}"
+        };
+    }
 }