diff --git a/core/build.rs b/core/build.rs
index 5294dd5..75cce15 100644
--- a/core/build.rs
+++ b/core/build.rs
@@ -2,7 +2,11 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     tonic_prost_build::configure()
         .extern_path(".tripod_id", "::tripod_id::prost")
         .compile_protos(
-            &["proto/caretta_sync.proto", "proto/caretta_sync.common.proto"],
+            &[
+                "proto/caretta_sync.authorization_request.proto",
+                "proto/caretta_sync.peer_info.proto",
+                "proto/caretta_sync.common.proto"
+            ],
             &["proto", "../tripod-id/proto"]
         )?;
     Ok(())
diff --git a/core/proto/caretta_sync.authorization_request.proto b/core/proto/caretta_sync.authorization_request.proto
new file mode 100644
index 0000000..8b28dbf
--- /dev/null
+++ b/core/proto/caretta_sync.authorization_request.proto
@@ -0,0 +1,74 @@
+syntax = "proto3";
+package caretta_sync;
+
+import "caretta_sync.common.proto";
+import "tripod_id.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+
+service AuthorizationRequest {
+    rpc Send(AuthorizationRequestSendRequest) returns (AuthorizationRequestSendResponse);
+    rpc Accept(AuthorizationRequestAcceptRequest) returns (AuthorizationRequestAcceptResponse);
+    rpc Reject(AuthorizationRequestRejectRequest) returns (AuthorizationRequestRejectResponse);
+    rpc Info(AuthorizationRequestInfoRequest) returns (AuthorizationRequestInfoResponse);
+    rpc InfoStream(stream AuthorizationRequestInfoStreamRequest) returns (stream AuthorizationRequestInfoStreamResponse);
+}
+
+enum AuthorizationRequestKind {
+    SENT = 0;
+    RECEIVED = 1;
+}
+
+message AuthorizationRequestSendRequest {
+    caretta_sync.common.PeerIdentifier peer = 1;
+}
+
+message AuthorizationRequestSendResponse {
+    string passcode = 1;
+}
+
+message AuthorizationRequestInfo {
+    tripod_id.Double id = 1;
+    caretta_sync.common.PublicKey public_key = 2;
+    google.protobuf.Timestamp created_at = 3;
+    AuthorizationRequestKind kind = 4;
+    string node_info = 5;
+}
+
+
+message AuthorizationRequestIdentifier {
+    oneof identifier {
+        caretta_sync.common.Uuid uuid = 1;
+        tripod_id.Double id = 2;
+    }
+}
+
+message AuthorizationRequestAcceptRequest {
+    AuthorizationRequestIdentifier authorization_request = 1;
+    string passcode = 2;
+}
+
+message AuthorizationRequestAcceptResponse {
+    caretta_sync.common.AuthorizedNodeInfo authorized_node_info = 1;
+}
+
+message AuthorizationRequestRejectRequest {
+    AuthorizationRequestIdentifier authorization_request = 1;
+}
+
+message AuthorizationRequestRejectResponse {
+    AuthorizationRequestInfo request_info = 1;
+}
+
+message AuthorizationRequestInfoRequest {
+    AuthorizationRequestIdentifier request = 1;   
+}
+message AuthorizationRequestInfoResponse{
+    AuthorizationRequestInfo info = 1;
+}
+
+message AuthorizationRequestInfoStreamRequest {}
+
+message AuthorizationRequestInfoStreamResponse {
+    AuthorizationRequestInfo request_info = 1;
+}
\ No newline at end of file
diff --git a/core/proto/caretta_sync.common.proto b/core/proto/caretta_sync.common.proto
index 0067e9a..b43a41d 100644
--- a/core/proto/caretta_sync.common.proto
+++ b/core/proto/caretta_sync.common.proto
@@ -8,21 +8,27 @@ message PublicKey {
     bytes key = 1;
 }
 
-message UuidMessage {
+message Uuid {
     uint64 first_half = 1;
     uint64 second_half = 2;
 }
 
-message PeerIdentifierMessage {
+message PeerIdentifier {
     oneof peer_identifier {
         tripod_id.Double id = 1;
         PublicKey public_key = 2;
     }
 }
 
-message PeerIdentifierErrorMessage {
-    oneof error {
-        string peer_id_not_found = 1;
-        string public_key_not_found = 2;
+message AuthorizedNodeIdentifier {
+    oneof identifier {
+        tripod_id.Single id = 1;
+        PublicKey public_key = 2;
     }
 }
+
+message AuthorizedNodeInfo {
+    tripod_id.Single id = 1;
+    PublicKey public_key = 2;
+    string note = 3;
+}
\ No newline at end of file
diff --git a/core/proto/caretta_sync.peer_info.proto b/core/proto/caretta_sync.peer_info.proto
new file mode 100644
index 0000000..27ea993
--- /dev/null
+++ b/core/proto/caretta_sync.peer_info.proto
@@ -0,0 +1,56 @@
+syntax = "proto3";
+package caretta_sync;
+
+import "caretta_sync.common.proto";
+import "tripod_id.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/empty.proto";
+
+service Peer {
+    rpc Info(PeerInfoRequest) returns (PeerInfoResponse);
+    rpc InfoStream(stream PeerInfoStreamRequest) returns (stream PeerInfoStreamResponse);
+}
+
+message PeerInfoRequest {
+    caretta_sync.common.PeerIdentifier peer = 1;
+}
+
+message PeerInfoStreamRequest {}
+
+message PeerInfoResponse {
+    PeerInfo peer_info = 1;
+}
+
+message PeerInfoStreamResponse {
+    PeerInfo peer_info = 1;
+}
+
+message PeerInfo {
+    tripod_id.Double id = 1;
+    caretta_sync.common.PublicKey public_key = 2;
+    string relay_url = 3;
+    repeated DirectAddrInfo addrs = 4;
+    string conn_type = 5;
+    google.protobuf.Duration latency = 6;
+    google.protobuf.Duration last_used = 7;
+}
+
+message DirectAddrInfo {
+    string addr = 1;
+    google.protobuf.Duration latency = 2;
+    LastControl last_control = 3;
+    google.protobuf.Duration last_payload = 4;
+    google.protobuf.Duration last_alive = 5;
+    repeated Source sources = 6;
+}
+
+message LastControl {
+    google.protobuf.Duration duration = 1;
+    string control_msg = 2;
+}
+
+message Source {
+    string source = 1;
+    google.protobuf.Duration duration = 2;
+}
diff --git a/core/proto/caretta_sync.proto b/core/proto/caretta_sync.proto
deleted file mode 100644
index 4506bf2..0000000
--- a/core/proto/caretta_sync.proto
+++ /dev/null
@@ -1,51 +0,0 @@
-syntax = "proto3";
-package caretta_sync;
-import "google/protobuf/timestamp.proto";
-import "google/protobuf/duration.proto";
-
-service CarettaSync {
-    rpc RemoteInfo(RemoteInfoRequest) returns (RemoteInfoResponse);
-    rpc RemoteInfoIter(RemoteInfoIterRequest) returns (stream RemoteInfoResponse);
-}
-
-message NodeIdMessage {
-    bytes node_id = 1;
-}
-
-message RemoteInfoRequest {
-    NodeIdMessage node_id = 1;
-}
-
-message RemoteInfoIterRequest {}
-
-message RemoteInfoResponse {
-    RemoteInfoMessage remote_info = 1;
-}
-
-message RemoteInfoMessage {
-    NodeIdMessage node_id = 1;
-    string relay_url = 2;
-    repeated DirectAddrInfoMessage addrs = 3;
-    string conn_type = 4;
-    google.protobuf.Duration latency = 5;
-    google.protobuf.Duration last_used = 6;
-}
-
-message DirectAddrInfoMessage {
-    string addr = 1;
-    google.protobuf.Duration latency = 2;
-    LastControlMessage last_control = 3;
-    google.protobuf.Duration last_payload = 4;
-    google.protobuf.Duration last_alive = 5;
-    repeated SourceMessage sources = 6;
-}
-
-message LastControlMessage {
-    google.protobuf.Duration duration = 1;
-    string control_msg = 2;
-}
-
-message SourceMessage {
-    string source = 1;
-    google.protobuf.Duration duration = 2;
-}
diff --git a/core/proto/caretta_sync/peer_info.proto b/core/proto/caretta_sync/peer_info.proto
deleted file mode 100644
index 27b7fad..0000000
--- a/core/proto/caretta_sync/peer_info.proto
+++ /dev/null
@@ -1,97 +0,0 @@
-syntax = "proto3";
-package caretta_sync;
-
-import "common.proto";
-import "google/protobuf/timestamp.proto";
-import "google/protobuf/duration.proto";
-import "google/protobuf/empty.proto";
-
-service PeerInfo {
-    rpc PeerInfo(PeerInfoRequest) returns (PeerInfoResponse);
-    rpc PeerInfoIter(PeerInfoIterRequest) returns (stream PeerInfoResponse);
-}
-
-
-
-message PeerInfoRequest {
-    caretta_sync.common.PeerIdentifierMessage peer = 1;
-}
-
-message PeerInfoIterRequest {}
-
-message PeerInfoResponse {
-    oneof result {
-        PeerInfoMessage remote_info = 1;
-        Error error = 2;
-    }
-}
-
-message PeerInfoMessage {
-    DoubleIdMessage id = 1;
-    PublicKeyMessage public_key = 2;
-    string relay_url = 3;
-    repeated DirectAddrInfoMessage addrs = 4;
-    string conn_type = 5;
-    google.protobuf.Duration latency = 6;
-    google.protobuf.Duration last_used = 7;
-}
-
-message DirectAddrInfoMessage {
-    string addr = 1;
-    google.protobuf.Duration latency = 2;
-    LastControlMessage last_control = 3;
-    google.protobuf.Duration last_payload = 4;
-    google.protobuf.Duration last_alive = 5;
-    repeated SourceMessage sources = 6;
-}
-
-message LastControlMessage {
-    google.protobuf.Duration duration = 1;
-    string control_msg = 2;
-}
-
-message SourceMessage {
-    string source = 1;
-    google.protobuf.Duration duration = 2;
-}
-
-message SendAuthorizationRequestRequest {
-    PeerMessage peer = 1;
-}
-
-message SendAuthorizationRequestResponse {
-    oneof result {
-        string passcode = 1;
-        Error error = 2;
-    }
-}
-
-message AuthorizationRequestMessage {
-    oneof authorization_request {
-        UuidMessage uuid = 1;
-        DoubleIdMessage id = 2;
-    }
-}
-
-message AcceptAuthorizationRequestRequest {
-    AuthorizationRequestMessage authorization_request = 1;
-    string passcode = 2;
-}
-
-message AcceptAuthorizationRequestResponse {
-    oneof result {
-        google.protobuf.Empty ok = 1;
-        Error error = 2;
-    }
-}
-
-message RejectAuthorizationRequestRequest {
-    AuthorizationRequestMessage authorization_request = 1;
-}
-
-message RejectAuthorizationRequestResponse {
-    oneof result {
-        google.protobuf.Empty ok = 1;
-        Error error = 2;
-    }
-}
\ No newline at end of file
diff --git a/core/proto/caretta_sync/service.proto b/core/proto/caretta_sync/service.proto
deleted file mode 100644
index 4ea529e..0000000
--- a/core/proto/caretta_sync/service.proto
+++ /dev/null
@@ -1,99 +0,0 @@
-syntax = "proto3";
-package caretta_sync;
-
-import "google/protobuf/timestamp.proto";
-import "google/protobuf/duration.proto";
-import "google/protobuf/empty.proto";
-
-service CarettaSync {
-    rpc SendAuthorizationRequest(SendAuthorizationRequestRequest) returns (SendAuthorizationRequestResponse);
-    rpc AcceptAuthorizationRequest(AcceptAuthorizationRequestRequest) returns (AcceptAuthorizationRequestResponse);
-    rpc RejectAuthorizationRequest(RejectAuthorizationRequestRequest) returns (RejectAuthorizationRequestResponse);
-    rpc RemoteInfo(RemoteInfoRequest) returns (RemoteInfoResponse);
-    rpc RemoteInfoIter(RemoteInfoIterRequest) returns (stream RemoteInfoResponse);
-}
-
-
-
-message RemoteInfoRequest {
-    PeerMessage peer = 1;
-}
-
-message RemoteInfoIterRequest {}
-
-message RemoteInfoResponse {
-    oneof result {
-        RemoteInfoMessage remote_info = 1;
-        Error error = 2;
-    }
-}
-
-message RemoteInfoMessage {
-    DoubleIdMessage id = 1;
-    PublicKeyMessage public_key = 2;
-    string relay_url = 3;
-    repeated DirectAddrInfoMessage addrs = 4;
-    string conn_type = 5;
-    google.protobuf.Duration latency = 6;
-    google.protobuf.Duration last_used = 7;
-}
-
-message DirectAddrInfoMessage {
-    string addr = 1;
-    google.protobuf.Duration latency = 2;
-    LastControlMessage last_control = 3;
-    google.protobuf.Duration last_payload = 4;
-    google.protobuf.Duration last_alive = 5;
-    repeated SourceMessage sources = 6;
-}
-
-message LastControlMessage {
-    google.protobuf.Duration duration = 1;
-    string control_msg = 2;
-}
-
-message SourceMessage {
-    string source = 1;
-    google.protobuf.Duration duration = 2;
-}
-
-message SendAuthorizationRequestRequest {
-    PeerMessage peer = 1;
-}
-
-message SendAuthorizationRequestResponse {
-    oneof result {
-        string passcode = 1;
-        Error error = 2;
-    }
-}
-
-message AuthorizationRequestMessage {
-    oneof authorization_request {
-        UuidMessage uuid = 1;
-        DoubleIdMessage id = 2;
-    }
-}
-
-message AcceptAuthorizationRequestRequest {
-    AuthorizationRequestMessage authorization_request = 1;
-    string passcode = 2;
-}
-
-message AcceptAuthorizationRequestResponse {
-    oneof result {
-        google.protobuf.Empty ok = 1;
-        Error error = 2;
-    }
-}
-
-message RejectAuthorizationRequestRequest {
-    AuthorizationRequestMessage authorization_request = 1;
-}
-
-message RejectAuthorizationRequestResponse {
-    oneof result {
-        google.protobuf.Empty ok = 1;
-        Error error = 2;
-    }
-}
\ No newline at end of file