diff --git a/Makefile b/Makefile
index b05efe1a..b08d2e46 100644
--- a/Makefile
+++ b/Makefile
@@ -40,13 +40,25 @@ update-proto-submodule:
 	printf $(COLOR) "Update proto-submodule..."
 	git -c protocol.file.allow=always submodule update --init --force --remote $(PROTO_ROOT)
 
-##### Compile proto files for go #####
-grpc: http-api-docs go-grpc copy-helpers
+NEXUS_SCHEMA_ROOT := $(PROTO_ROOT)/nexus
+NEXUS_PROTO_OUT := workflowservice/v1/workflowservicenexus
 
-# Only install helper when its source has changed
+##### Compile proto files for go #####
+grpc: http-api-docs go-grpc copy-helpers nexus-gen
+
+nexus-gen:
+	printf $(COLOR) "Generate nexus service definitions..."
+	mkdir -p $(NEXUS_PROTO_OUT)
+	cd $(NEXUS_SCHEMA_ROOT) && nexus-rpc-gen \
+		--lang go \
+		--package workflowservicenexus \
+		--out-file $(CURDIR)/$(NEXUS_PROTO_OUT)/service_nexus.pb.go \
+		temporal-proto-models-nexusrpc.yaml
+
+# Only install helpers when their source has changed
 HELPER_FILES = $(shell find ./cmd/protoc-gen-go-helpers)
 .go-helpers-installed: $(HELPER_FILES)
-	printf $(COLOR) "Installing protoc plugin"
+	printf $(COLOR) "Installing protoc-gen-go-helpers plugin"
 	@go install ./cmd/protoc-gen-go-helpers
 	@touch $@
 
@@ -105,12 +117,23 @@ gen-proto-desc:
 		--output-descriptor=$(PROTO_OUT)/descriptor_set.pb
 
 ##### Plugins & tools #####
-grpc-install:
+grpc-install: nexus-rpc-gen-install
 	@printf $(COLOR) "Install/update grpc and plugins..."
-	@go install google.golang.org/protobuf/cmd/protoc-gen-go@latest 
+	@go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
 	@go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
 	@go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway@latest
 
+NEXUS_RPC_GEN_CACHE := $(HOME)/.cache/nexus-rpc-gen
+
+.PHONY: nexus-rpc-gen-install
+nexus-rpc-gen-install:
+	@printf $(COLOR) "Install nexus-rpc-gen from main..."
+	@rm -rf $(NEXUS_RPC_GEN_CACHE)
+	@git clone --depth 1 https://github.com/nexus-rpc/nexus-rpc-gen.git $(NEXUS_RPC_GEN_CACHE)
+	@cd $(NEXUS_RPC_GEN_CACHE)/src && pnpm install && pnpm run build
+	@chmod +x $(NEXUS_RPC_GEN_CACHE)/src/packages/nexus-rpc-gen/dist/index.js
+	@cd $(NEXUS_RPC_GEN_CACHE)/src/packages/nexus-rpc-gen && pnpm link --global
+
 mockgen-install:
 	printf $(COLOR) "Install/update mockgen..."
 	go install -modfile=build/go.mod github.com/golang/mock/mockgen
diff --git a/go.mod b/go.mod
index 3b5eaef2..ef4fa0be 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0
 	github.com/nexus-rpc/nexus-proto-annotations v0.1.0
+	github.com/nexus-rpc/sdk-go v0.6.0
 	github.com/stretchr/testify v1.9.0
 	google.golang.org/genproto/googleapis/api v0.0.0-20240827150818-7e3bb234dfed
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240827150818-7e3bb234dfed
diff --git a/go.sum b/go.sum
index 49df761b..a17b93bc 100644
--- a/go.sum
+++ b/go.sum
@@ -13,6 +13,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/nexus-rpc/nexus-proto-annotations v0.1.0 h1:2fELd+9sqUtNu6Fg//pw8YFsxOvp8vZ8hfP0nHhNI80=
 github.com/nexus-rpc/nexus-proto-annotations v0.1.0/go.mod h1:n3UjF1bPCW8llR8tHvbxJ+27yPWrhpo8w/Yg1IOuY0Y=
+github.com/nexus-rpc/sdk-go v0.6.0 h1:QRgnP2zTbxEbiyWG/aXH8uSC5LV/Mg1fqb19jb4DBlo=
+github.com/nexus-rpc/sdk-go v0.6.0/go.mod h1:FHdPfVQwRuJFZFTF0Y2GOAxCrbIBNrcPna9slkGKPYk=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
diff --git a/workflowservice/v1/workflowservicenexus/service_nexus.pb.go b/workflowservice/v1/workflowservicenexus/service_nexus.pb.go
new file mode 100644
index 00000000..15dbdff5
--- /dev/null
+++ b/workflowservice/v1/workflowservicenexus/service_nexus.pb.go
@@ -0,0 +1,16 @@
+// Code generated by nexus-rpc-gen. DO NOT EDIT.
+
+package workflowservicenexus
+
+import (
+	"github.com/nexus-rpc/sdk-go/nexus"
+	workflowservicev1 "go.temporal.io/api/workflowservice/v1"
+)
+
+var WorkflowService = struct {
+	ServiceName                      string
+	SignalWithStartWorkflowExecution nexus.OperationReference[workflowservicev1.SignalWithStartWorkflowExecutionRequest, workflowservicev1.SignalWithStartWorkflowExecutionResponse]
+}{
+	ServiceName:                      "WorkflowService",
+	SignalWithStartWorkflowExecution: nexus.NewOperationReference[workflowservicev1.SignalWithStartWorkflowExecutionRequest, workflowservicev1.SignalWithStartWorkflowExecutionResponse]("SignalWithStartWorkflowExecution"),
+}