From b37d25e70d87126fdeaf39d2207f57e8fd744b51 Mon Sep 17 00:00:00 2001
From: Sean Kane <sean.kane@temporal.io>
Date: Wed, 18 Mar 2026 15:40:01 -0600
Subject: [PATCH 1/2] Add "exposed" operation for system nexus endpoint

---
 nexusannotations/v1/options.proto             | 29 +++++++++++++++++++
 temporal/api/workflowservice/v1/service.proto |  5 +++-
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 nexusannotations/v1/options.proto

diff --git a/nexusannotations/v1/options.proto b/nexusannotations/v1/options.proto
new file mode 100644
index 000000000..0f817e4a4
--- /dev/null
+++ b/nexusannotations/v1/options.proto
@@ -0,0 +1,29 @@
+syntax = "proto3";
+
+package nexus.v1;
+
+import "google/protobuf/descriptor.proto";
+
+option go_package = "github.com/bergundy/nexus-proto-annotations/go/nexus/v1";
+
+extend google.protobuf.ServiceOptions {
+  optional ServiceOptions service = 8233;
+}
+
+extend google.protobuf.MethodOptions {
+  optional OperationOptions operation = 8234;
+}
+
+message OperationOptions {
+  // Nexus operation name (defaults to proto method name).
+  string name = 1;
+  // Tags to attach to the operation. Used by code generators to include and exclude operations.
+  repeated string tags = 2;
+}
+
+message ServiceOptions {
+  // Nexus service name (defaults to proto service full name).
+  string name = 1;
+  // Tags to attach to the service. Used by code generators to include and exclude services.
+  repeated string tags = 2;
+}
\ No newline at end of file
diff --git a/temporal/api/workflowservice/v1/service.proto b/temporal/api/workflowservice/v1/service.proto
index 8b0eb2ce6..7810aa7d8 100644
--- a/temporal/api/workflowservice/v1/service.proto
+++ b/temporal/api/workflowservice/v1/service.proto
@@ -10,8 +10,9 @@ option ruby_package = "Temporalio::Api::WorkflowService::V1";
 option csharp_namespace = "Temporalio.Api.WorkflowService.V1";
 
 
-import "temporal/api/workflowservice/v1/request_response.proto";
 import "google/api/annotations.proto";
+import "nexusannotations/v1/options.proto";
+import "temporal/api/workflowservice/v1/request_response.proto";
 
 // WorkflowService API defines how Temporal SDKs and other clients interact with the Temporal server
 // to create and interact with workflows and activities.
@@ -385,6 +386,8 @@ service WorkflowService {
     // (-- api-linter: core::0136::prepositions=disabled
     //     aip.dev/not-precedent: "With" is used to indicate combined operation. --)
     rpc SignalWithStartWorkflowExecution (SignalWithStartWorkflowExecutionRequest) returns (SignalWithStartWorkflowExecutionResponse) {
+        option (nexus.v1.operation).tags = "exposed";
+
         option (google.api.http) = {
             post: "/namespaces/{namespace}/workflows/{workflow_id}/signal-with-start/{signal_name}"
             body: "*"

From b51776406409a2abb55c0871515dcc2e1820aeea Mon Sep 17 00:00:00 2001
From: Sean Kane <sean.kane@temporal.io>
Date: Wed, 18 Mar 2026 15:47:36 -0600
Subject: [PATCH 2/2] linter fixes

---
 nexusannotations/v1/options.proto             | 2 +-
 temporal/api/workflowservice/v1/service.proto | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/nexusannotations/v1/options.proto b/nexusannotations/v1/options.proto
index 0f817e4a4..a8ef63728 100644
--- a/nexusannotations/v1/options.proto
+++ b/nexusannotations/v1/options.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package nexus.v1;
+package nexusannotations.v1;
 
 import "google/protobuf/descriptor.proto";
 
diff --git a/temporal/api/workflowservice/v1/service.proto b/temporal/api/workflowservice/v1/service.proto
index 53f4ce2db..9cd8b730d 100644
--- a/temporal/api/workflowservice/v1/service.proto
+++ b/temporal/api/workflowservice/v1/service.proto
@@ -488,7 +488,7 @@ service WorkflowService {
     // (-- api-linter: core::0136::prepositions=disabled
     //     aip.dev/not-precedent: "With" is used to indicate combined operation. --)
     rpc SignalWithStartWorkflowExecution (SignalWithStartWorkflowExecutionRequest) returns (SignalWithStartWorkflowExecutionResponse) {
-        option (nexus.v1.operation).tags = "exposed";
+        option (nexusannotations.v1.operation).tags = "exposed";
 
         option (google.api.http) = {
             post: "/namespaces/{namespace}/workflows/{workflow_id}/signal-with-start/{signal_name}"