diff --git a/cmd/start.go b/cmd/start.go
index 4557ebc..9979990 100644
--- a/cmd/start.go
+++ b/cmd/start.go
@@ -8,12 +8,14 @@ import (
 	"github.com/spf13/cobra"
 
 	"github.com/strangelove-ventures/horcrux-proxy/privval"
+	"github.com/strangelove-ventures/horcrux-proxy/signer"
 )
 
 const (
-	flagLogLevel = "log-level"
-	flagListen   = "listen"
-	flagAll      = "all"
+	flagLogLevel    = "log-level"
+	flagListen      = "listen"
+	flagAll         = "all"
+	flagGRPCAddress = "grpc"
 )
 
 func startCmd() *cobra.Command {
@@ -42,15 +44,28 @@ func startCmd() *cobra.Command {
 				listeners[i] = privval.NewSignerListener(logger, addr)
 			}
 
-			loadBalancer := privval.NewRemoteSignerLoadBalancer(logger, listeners)
-			if err = loadBalancer.Start(); err != nil {
-				return fmt.Errorf("failed to start listener(s): %w", err)
+			var hc signer.HorcruxConnection
+
+			grpcAddr, _ := cmd.Flags().GetString(flagGRPCAddress)
+
+			if grpcAddr != "" {
+				hc, err = signer.NewHorcruxGRPCClient(logger, grpcAddr)
+				if err != nil {
+					return fmt.Errorf("failed to create grpc connection: %w", err)
+				}
+			} else {
+				loadBalancer := privval.NewRemoteSignerLoadBalancer(logger, listeners)
+				if err = loadBalancer.Start(); err != nil {
+					return fmt.Errorf("failed to start listener(s): %w", err)
+				}
+				defer logIfErr(logger, loadBalancer.Stop)
+
+				hc = loadBalancer
 			}
-			defer logIfErr(logger, loadBalancer.Stop)
 
 			ctx := cmd.Context()
 
-			watcher, err := NewSentryWatcher(ctx, logger, all, loadBalancer)
+			watcher, err := NewSentryWatcher(ctx, logger, all, hc)
 			if err != nil {
 				return err
 			}
@@ -64,6 +79,7 @@ func startCmd() *cobra.Command {
 	}
 
 	cmd.Flags().StringArrayP(flagListen, "l", []string{"tcp://0.0.0.0:1234"}, "Privval listen addresses for the proxy")
+	cmd.Flags().StringP(flagGRPCAddress, "g", "", "GRPC address for the proxy")
 	cmd.Flags().BoolP(flagAll, "a", false, "Connect to sentries on all nodes")
 	cmd.Flags().String(flagLogLevel, "info", "Set log level (debug, info, error, none)")
 
diff --git a/cmd/watcher.go b/cmd/watcher.go
index 46b53f4..754c634 100644
--- a/cmd/watcher.go
+++ b/cmd/watcher.go
@@ -9,7 +9,6 @@ import (
 	"time"
 
 	cometlog "github.com/cometbft/cometbft/libs/log"
-	"github.com/strangelove-ventures/horcrux-proxy/privval"
 	"github.com/strangelove-ventures/horcrux-proxy/signer"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -26,7 +25,7 @@ const (
 type SentryWatcher struct {
 	all      bool
 	client   *kubernetes.Clientset
-	lb       *privval.RemoteSignerLoadBalancer
+	hc       signer.HorcruxConnection
 	log      cometlog.Logger
 	node     string
 	sentries map[string]*signer.ReconnRemoteSigner
@@ -39,7 +38,7 @@ func NewSentryWatcher(
 	ctx context.Context,
 	logger cometlog.Logger,
 	all bool, // should we connect to sentries on all nodes, or just this node?
-	lb *privval.RemoteSignerLoadBalancer,
+	hc signer.HorcruxConnection,
 ) (*SentryWatcher, error) {
 	config, err := rest.InClusterConfig()
 	if err != nil {
@@ -73,7 +72,7 @@ func NewSentryWatcher(
 		all:      all,
 		client:   clientset,
 		done:     make(chan struct{}),
-		lb:       lb,
+		hc:       hc,
 		log:      logger,
 		node:     thisNode,
 		sentries: make(map[string]*signer.ReconnRemoteSigner),
@@ -194,7 +193,7 @@ func (w *SentryWatcher) reconcileSentries(
 
 	for _, newSentry := range newSentries {
 		dialer := net.Dialer{Timeout: 2 * time.Second}
-		s := signer.NewReconnRemoteSigner(newSentry, w.log, w.lb, dialer)
+		s := signer.NewReconnRemoteSigner(newSentry, w.log, w.hc, dialer)
 
 		if err := s.Start(); err != nil {
 			return fmt.Errorf("failed to start new remote signer(s): %w", err)
diff --git a/go.mod b/go.mod
index 2f248b5..b537981 100644
--- a/go.mod
+++ b/go.mod
@@ -4,18 +4,20 @@ go 1.20
 
 require (
 	github.com/cometbft/cometbft v0.37.2
-	github.com/cosmos/gogoproto v1.4.1
+	github.com/cosmos/gogoproto v1.4.10
 	github.com/spf13/cobra v1.6.1
+	github.com/strangelove-ventures/horcrux v0.1.5-0.20231108005242-84006451edad
 	github.com/stretchr/testify v1.8.2
-	golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde
+	golang.org/x/sync v0.1.0
+	google.golang.org/grpc v1.55.0
 	k8s.io/apimachinery v0.28.1
 	k8s.io/client-go v0.28.1
 )
 
 require (
-	github.com/btcsuite/btcd/btcec/v2 v2.2.1 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/emicklei/go-restful/v3 v3.9.0 // indirect
 	github.com/go-kit/log v0.2.1 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
@@ -39,12 +41,13 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
+	github.com/petermattis/goid v0.0.0-20230317030725-371a4b8eda08 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/sasha-s/go-deadlock v0.3.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	golang.org/x/crypto v0.11.0 // indirect
+	golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc // indirect
 	golang.org/x/net v0.13.0 // indirect
 	golang.org/x/oauth2 v0.8.0 // indirect
 	golang.org/x/sys v0.10.0 // indirect
@@ -52,6 +55,7 @@ require (
 	golang.org/x/text v0.11.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
diff --git a/go.sum b/go.sum
index 46357f5..02f8923 100644
--- a/go.sum
+++ b/go.sum
@@ -1,22 +1,21 @@
 github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d h1:nalkkPQcITbvhmL4+C4cKA87NW0tfm3Kl9VXRoPywFg=
-github.com/btcsuite/btcd/btcec/v2 v2.2.1 h1:xP60mv8fvp+0khmrN0zTdPC3cNm24rfeE6lh2R/Yv3E=
-github.com/btcsuite/btcd/btcec/v2 v2.2.1/go.mod h1:9/CSmJxmuvqzX9Wh2fXMWToLOHhPd11lSPuIupwTkI8=
+github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U=
+github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04=
 github.com/btcsuite/btcd/btcutil v1.1.2 h1:XLMbX8JQEiwMcYft2EGi8zPUkoa0abKIU6/BJSRsjzQ=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 h1:q0rUy8C/TYNBQS1+CGKw68tLOFYSNEs0TFnxxnS9+4U=
 github.com/cometbft/cometbft v0.37.2 h1:XB0yyHGT0lwmJlFmM4+rsRnczPlHoAKFX6K8Zgc2/Jc=
 github.com/cometbft/cometbft v0.37.2/go.mod h1:Y2MMMN//O5K4YKd8ze4r9jmk4Y7h0ajqILXbH5JQFVs=
-github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d h1:49RLWk1j44Xu4fjHb6JFYmeUnDORVwHNkDxaQ0ctCVU=
-github.com/cosmos/gogoproto v1.4.1 h1:WoyH+0/jbCTzpKNvyav5FL1ZTWsp1im1MxEpJEzKUB8=
-github.com/cosmos/gogoproto v1.4.1/go.mod h1:Ac9lzL4vFpBMcptJROQ6dQ4M3pOEK5Z/l0Q9p+LoCr4=
+github.com/cosmos/go-bip39 v1.0.0 h1:pcomnQdrdH22njcAatO0yWojsUnCO3y2tNoV1cb6hHY=
+github.com/cosmos/gogoproto v1.4.10 h1:QH/yT8X+c0F4ZDacDv3z+xE3WU1P1Z3wQoLMBRJoKuI=
+github.com/cosmos/gogoproto v1.4.10/go.mod h1:3aAZzeRWpAwr+SS/LLkICX2/kDFyaYVzckBDzygIxek=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0=
-github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
+github.com/decred/dcrd/crypto/blake256 v1.0.1 h1:7PltbUIQB7u/FfZ39+DGa/ShuMyJ5ilcvdfma9wOH6Y=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
 github.com/emicklei/go-restful/v3 v3.9.0 h1:XwGDlfxEnQZzuopoqxwSEllNcCOM9DhhFyhFIIGKwxE=
 github.com/emicklei/go-restful/v3 v3.9.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
@@ -85,8 +84,9 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8m
 github.com/onsi/ginkgo v1.16.4 h1:29JGrr5oVBm5ulCWet69zQkzWipVXIol6ygQUe/EzNc=
 github.com/onsi/ginkgo/v2 v2.9.4 h1:xR7vG4IXt5RWx6FfIjyAtsoMAtnc3C/rFXBBd2AjZwE=
 github.com/onsi/gomega v1.27.6 h1:ENqfyGeS5AX/rlXDd/ETokDz93u0YufY1Pgxuy/PvWE=
-github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 h1:q2e307iGHPdTGp0hoxKjt1H5pDo6utceo3dQVK3I5XQ=
 github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5/go.mod h1:jvVRKCrJTQWu0XVbaOlby/2lO20uSCHEMzzplHXte1o=
+github.com/petermattis/goid v0.0.0-20230317030725-371a4b8eda08 h1:hDSdbBuw3Lefr6R18ax0tZ2BJeNB3NehB3trOwYBsdU=
+github.com/petermattis/goid v0.0.0-20230317030725-371a4b8eda08/go.mod h1:pxMtw7cyUw6B2bRH0ZBANSPg+AoSud1I1iyJHI69jH4=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -99,6 +99,8 @@ github.com/spf13/cobra v1.6.1 h1:o94oiPyS4KD1mPy2fmcYYHHfCxLqYjJOhGsCHFZtEzA=
 github.com/spf13/cobra v1.6.1/go.mod h1:IOw/AERYS7UzyrGinqmz6HLUo219MORXGxhbaJUqzrY=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/strangelove-ventures/horcrux v0.1.5-0.20231108005242-84006451edad h1:fe8iWUpTOIxXFwoUr/Yccjp4OQwETIAvF0wWBLpYJ70=
+github.com/strangelove-ventures/horcrux v0.1.5-0.20231108005242-84006451edad/go.mod h1:SHegQxcwdJUSAY5o1Q14MGqTFV8pQvEZjhMfBFB5oUY=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@@ -115,6 +117,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
 golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
+golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc h1:mCRnTeVUjcrhlRmO0VK8a6k6Rrf6TF9htwo2pJVSjIU=
+golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -129,8 +133,8 @@ golang.org/x/oauth2 v0.8.0/go.mod h1:yr7u4HXZRm1R1kBWqr/xKNqewf0plRYoB7sla+BCIXE
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde h1:ejfdSekXMDxDLbRrJMwUk6KnSLZ2McaUCVcIKM+N6jc=
-golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -156,6 +160,10 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
 google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 h1:DdoeryqhaXp1LtT/emMP1BRJPHHKFi5akj/nbx/zNTA=
+google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4/go.mod h1:NWraEVixdDnqcqQ30jipen1STv2r/n24Wb7twVTGR4s=
+google.golang.org/grpc v1.55.0 h1:3Oj82/tFSCeUrRTg/5E/7d/W5A1tj6Ky1ABAuZuv5ag=
+google.golang.org/grpc v1.55.0/go.mod h1:iYEXKGkEBhg1PjZQvoYEVPTDkHo1/bjTnfwTeGONTY8=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
diff --git a/signer/grpc_client.go b/signer/grpc_client.go
new file mode 100644
index 0000000..749f6b6
--- /dev/null
+++ b/signer/grpc_client.go
@@ -0,0 +1,112 @@
+package signer
+
+import (
+	"context"
+	"fmt"
+
+	cometlog "github.com/cometbft/cometbft/libs/log"
+	cometprotoprivval "github.com/cometbft/cometbft/proto/tendermint/privval"
+	"github.com/strangelove-ventures/horcrux/signer/proto"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var _ HorcruxConnection = (*HorcruxGRPCClient)(nil)
+
+type HorcruxGRPCClient struct {
+	grpcClient proto.RemoteSignerClient
+	logger     cometlog.Logger
+}
+
+func NewHorcruxGRPCClient(
+	logger cometlog.Logger,
+	address string,
+) (*HorcruxGRPCClient, error) {
+	conn, err := grpc.Dial(address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return nil, err
+	}
+	return &HorcruxGRPCClient{
+		logger:     logger,
+		grpcClient: proto.NewRemoteSignerClient(conn),
+	}, nil
+}
+
+func (c *HorcruxGRPCClient) SendRequest(req cometprotoprivval.Message) (*cometprotoprivval.Message, error) {
+	switch typedReq := req.Sum.(type) {
+	case *cometprotoprivval.Message_SignVoteRequest:
+		return c.handleSignVoteRequest(req)
+	case *cometprotoprivval.Message_SignProposalRequest:
+		return c.handleSignProposalRequest(req)
+	case *cometprotoprivval.Message_PubKeyRequest:
+		return c.handlePubKeyRequest(req)
+	case *cometprotoprivval.Message_PingRequest:
+		return c.handlePingRequest()
+	default:
+		c.logger.Error("Unknown request", "err", fmt.Errorf("%v", typedReq))
+		return &cometprotoprivval.Message{}, nil
+	}
+}
+
+func (c *HorcruxGRPCClient) handleSignVoteRequest(req cometprotoprivval.Message) (*cometprotoprivval.Message, error) {
+	res, err := c.grpcClient.SignVote(context.TODO(), req.GetSignVoteRequest())
+	if err == nil {
+		return &cometprotoprivval.Message{
+			Sum: &cometprotoprivval.Message_SignedVoteResponse{SignedVoteResponse: res},
+		}, nil
+	}
+
+	return &cometprotoprivval.Message{
+		Sum: &cometprotoprivval.Message_SignedVoteResponse{SignedVoteResponse: &cometprotoprivval.SignedVoteResponse{
+			Error: getRemoteSignerError(err),
+		}},
+	}, nil
+}
+
+func (c *HorcruxGRPCClient) handleSignProposalRequest(req cometprotoprivval.Message) (*cometprotoprivval.Message, error) {
+	res, err := c.grpcClient.SignProposal(context.TODO(), req.GetSignProposalRequest())
+	if err == nil {
+		return &cometprotoprivval.Message{
+			Sum: &cometprotoprivval.Message_SignedProposalResponse{SignedProposalResponse: res},
+		}, nil
+	}
+
+	return &cometprotoprivval.Message{
+		Sum: &cometprotoprivval.Message_SignedProposalResponse{SignedProposalResponse: &cometprotoprivval.SignedProposalResponse{
+			Error: getRemoteSignerError(err),
+		}},
+	}, nil
+}
+
+func (c *HorcruxGRPCClient) handlePubKeyRequest(req cometprotoprivval.Message) (*cometprotoprivval.Message, error) {
+	res, err := c.grpcClient.PubKey(context.TODO(), req.GetPubKeyRequest())
+	if err == nil {
+		return &cometprotoprivval.Message{
+			Sum: &cometprotoprivval.Message_PubKeyResponse{PubKeyResponse: res},
+		}, nil
+	}
+
+	return &cometprotoprivval.Message{
+		Sum: &cometprotoprivval.Message_PubKeyResponse{PubKeyResponse: &cometprotoprivval.PubKeyResponse{
+			Error: getRemoteSignerError(err),
+		}},
+	}, nil
+}
+
+func (c *HorcruxGRPCClient) handlePingRequest() (*cometprotoprivval.Message, error) {
+	return &cometprotoprivval.Message{
+		Sum: &cometprotoprivval.Message_PingResponse{
+			PingResponse: &cometprotoprivval.PingResponse{},
+		},
+	}, nil
+}
+
+func getRemoteSignerError(err error) *cometprotoprivval.RemoteSignerError {
+	if err == nil {
+		return nil
+	}
+	return &cometprotoprivval.RemoteSignerError{
+		Code:        0,
+		Description: err.Error(),
+	}
+}
diff --git a/signer/remote_signer.go b/signer/remote_signer.go
index 569fbf0..c11e2dc 100644
--- a/signer/remote_signer.go
+++ b/signer/remote_signer.go
@@ -1,7 +1,6 @@
 package signer
 
 import (
-	"fmt"
 	"io"
 	"net"
 	"time"
@@ -12,12 +11,13 @@ import (
 	"github.com/cometbft/cometbft/libs/protoio"
 	cometservice "github.com/cometbft/cometbft/libs/service"
 	cometp2pconn "github.com/cometbft/cometbft/p2p/conn"
-	cometprotocrypto "github.com/cometbft/cometbft/proto/tendermint/crypto"
 	cometprotoprivval "github.com/cometbft/cometbft/proto/tendermint/privval"
-	cometproto "github.com/cometbft/cometbft/proto/tendermint/types"
-	"github.com/strangelove-ventures/horcrux-proxy/privval"
 )
 
+type HorcruxConnection interface {
+	SendRequest(request cometprotoprivval.Message) (*cometprotoprivval.Message, error)
+}
+
 // ReconnRemoteSigner dials using its dialer and responds to any
 // signature requests using its privVal.
 type ReconnRemoteSigner struct {
@@ -26,7 +26,7 @@ type ReconnRemoteSigner struct {
 	address string
 	privKey cometcryptoed25519.PrivKey
 
-	loadBalancer *privval.RemoteSignerLoadBalancer
+	horcruxConnection HorcruxConnection
 
 	dialer net.Dialer
 }
@@ -39,14 +39,14 @@ type ReconnRemoteSigner struct {
 func NewReconnRemoteSigner(
 	address string,
 	logger cometlog.Logger,
-	loadBalancer *privval.RemoteSignerLoadBalancer,
+	horcruxConnection HorcruxConnection,
 	dialer net.Dialer,
 ) *ReconnRemoteSigner {
 	rs := &ReconnRemoteSigner{
-		address:      address,
-		dialer:       dialer,
-		loadBalancer: loadBalancer,
-		privKey:      cometcryptoed25519.GenPrivKey(),
+		address:           address,
+		dialer:            dialer,
+		horcruxConnection: horcruxConnection,
+		privKey:           cometcryptoed25519.GenPrivKey(),
 	}
 
 	rs.BaseService = *cometservice.NewBaseService(logger, "RemoteSigner", rs)
@@ -120,91 +120,27 @@ func (rs *ReconnRemoteSigner) loop() {
 		}
 
 		// handleRequest handles request errors. We always send back a response
-		res := rs.handleRequest(req)
-
-		err = WriteMsg(conn, res)
+		res, err := rs.horcruxConnection.SendRequest(req)
 		if err != nil {
-			rs.Logger.Error("writeMsg", "err", err)
+			rs.Logger.Error("handleRequest", "err", err)
 			conn.Close()
 			conn = nil
+			continue
 		}
-	}
-}
-
-func (rs *ReconnRemoteSigner) handleRequest(req cometprotoprivval.Message) cometprotoprivval.Message {
-	switch typedReq := req.Sum.(type) {
-	case *cometprotoprivval.Message_SignVoteRequest:
-		return rs.handleSignVoteRequest(req)
-	case *cometprotoprivval.Message_SignProposalRequest:
-		return rs.handleSignProposalRequest(req)
-	case *cometprotoprivval.Message_PubKeyRequest:
-		return rs.handlePubKeyRequest(req)
-	case *cometprotoprivval.Message_PingRequest:
-		return rs.handlePingRequest()
-	default:
-		rs.Logger.Error("Unknown request", "err", fmt.Errorf("%v", typedReq))
-		return cometprotoprivval.Message{}
-	}
-}
 
-func (rs *ReconnRemoteSigner) handleSignVoteRequest(req cometprotoprivval.Message) cometprotoprivval.Message {
-	res, err := rs.loadBalancer.SendRequest(req)
-	if err == nil {
-		return *res
-	}
-
-	return cometprotoprivval.Message{
-		Sum: &cometprotoprivval.Message_SignedVoteResponse{SignedVoteResponse: &cometprotoprivval.SignedVoteResponse{
-			Vote:  cometproto.Vote{},
-			Error: getRemoteSignerError(err),
-		}},
-	}
-}
-
-func (rs *ReconnRemoteSigner) handleSignProposalRequest(req cometprotoprivval.Message) cometprotoprivval.Message {
-	res, err := rs.loadBalancer.SendRequest(req)
-	if err == nil {
-		return *res
-	}
-
-	return cometprotoprivval.Message{
-		Sum: &cometprotoprivval.Message_SignedProposalResponse{
-			SignedProposalResponse: &cometprotoprivval.SignedProposalResponse{
-				Proposal: cometproto.Proposal{},
-				Error:    getRemoteSignerError(err),
-			}},
-	}
-}
-
-func (rs *ReconnRemoteSigner) handlePubKeyRequest(req cometprotoprivval.Message) cometprotoprivval.Message {
-	res, err := rs.loadBalancer.SendRequest(req)
-	if err == nil {
-		return *res
-	}
-
-	return cometprotoprivval.Message{
-		Sum: &cometprotoprivval.Message_PubKeyResponse{PubKeyResponse: &cometprotoprivval.PubKeyResponse{
-			PubKey: cometprotocrypto.PublicKey{},
-			Error:  getRemoteSignerError(err),
-		}},
-	}
-}
-
-func (rs *ReconnRemoteSigner) handlePingRequest() cometprotoprivval.Message {
-	return cometprotoprivval.Message{
-		Sum: &cometprotoprivval.Message_PingResponse{
-			PingResponse: &cometprotoprivval.PingResponse{},
-		},
-	}
-}
+		if res == nil {
+			rs.Logger.Error("handleRequest", "err", "nil response")
+			conn.Close()
+			conn = nil
+			continue
+		}
 
-func getRemoteSignerError(err error) *cometprotoprivval.RemoteSignerError {
-	if err == nil {
-		return nil
-	}
-	return &cometprotoprivval.RemoteSignerError{
-		Code:        0,
-		Description: err.Error(),
+		err = WriteMsg(conn, *res)
+		if err != nil {
+			rs.Logger.Error("writeMsg", "err", err)
+			conn.Close()
+			conn = nil
+		}
 	}
 }