diff --git a/README.md b/README.md
index ac197cd..7827240 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,15 @@ PRIVATE_KEY_1=abc123456789deadbeef...
 
 ## API
 
-The gRPC API is defined in [`proto/kms/v1/signer.proto`](proto/kms/v1/signer.proto):
+### Generate protobufs (Rust)
+The Rust server uses `tonic-build`. Rebuilding the project regenerates server/client code:
+
+```sh
+cargo clean
+cargo build
+```
+
+The gRPC API is defined in [`proto/fkms/v1/signer.proto`](proto/fkms/v1/signer.proto):
 
 - `SignEvm(SignEvmRequest)`: Sign a message with a given address
 - `GetSignerAddresses(GetSignerAddressesRequest)`: List available signer addresses
diff --git a/build.rs b/build.rs
index cab3a67..174839e 100644
--- a/build.rs
+++ b/build.rs
@@ -7,10 +7,10 @@ fn main() {
     tonic_build::configure()
         .build_server(true)
         .build_client(false)
-        .file_descriptor_set_path(out_dir.join("kms_v1_descriptor.bin"))
+        .file_descriptor_set_path(out_dir.join("fkms_v1_descriptor.bin"))
         .compile_protos(
-            &["proto/kms/v1/signer.proto"], // specify the proto files to compile
-            &["proto/kms"], // specify the root location to search proto dependencies
+            &["proto/fkms/v1/signer.proto"], // specify the proto files to compile
+            &["proto/fkms"], // specify the root location to search proto dependencies
         )
         .unwrap();
 }
diff --git a/proto/kms/v1/signer.proto b/proto/fkms/v1/signer.proto
similarity index 90%
rename from proto/kms/v1/signer.proto
rename to proto/fkms/v1/signer.proto
index 26a6673..cc8b957 100644
--- a/proto/kms/v1/signer.proto
+++ b/proto/fkms/v1/signer.proto
@@ -1,8 +1,8 @@
 syntax = "proto3";
 
-package kms.v1;
+package fkms.v1;
 
-service KmsEvmService {
+service FkmsService {
   rpc SignEvm(SignEvmRequest) returns (SignEvmResponse);
   rpc GetSignerAddresses(GetSignerAddressesRequest) returns (GetSignerAddressesResponse);
 }
diff --git a/src/commands/start.rs b/src/commands/start.rs
index df808f4..8131f13 100644
--- a/src/commands/start.rs
+++ b/src/commands/start.rs
@@ -1,6 +1,6 @@
 use crate::commands::utils::{get_config, get_local_signers_from_config};
 use crate::proto;
-use crate::proto::kms::v1::kms_evm_service_server::KmsEvmServiceServer;
+use crate::proto::fkms::v1::fkms_service_server::FkmsServiceServer;
 use crate::server::builder::ServerBuilder;
 use crate::signer::EvmSigner;
 use std::net::SocketAddr;
@@ -36,7 +36,7 @@ pub async fn start(path: PathBuf) -> anyhow::Result<()> {
 
     let server = builder.build();
     let reflection_server = tonic_reflection::server::Builder::configure()
-        .register_encoded_file_descriptor_set(proto::kms::v1::FILE_DESCRIPTOR_SET)
+        .register_encoded_file_descriptor_set(proto::fkms::v1::FILE_DESCRIPTOR_SET)
         .build_v1()?;
 
     info!(
@@ -45,7 +45,7 @@ pub async fn start(path: PathBuf) -> anyhow::Result<()> {
     );
 
     Server::builder()
-        .add_service(KmsEvmServiceServer::new(server))
+        .add_service(FkmsServiceServer::new(server))
         .add_service(reflection_server)
         .serve(SocketAddr::from((config.server.host, config.server.port)))
         .await?;
diff --git a/src/proto.rs b/src/proto.rs
index bc71b1c..bc40d17 100644
--- a/src/proto.rs
+++ b/src/proto.rs
@@ -1,7 +1,7 @@
-pub mod kms {
+pub mod fkms {
     pub mod v1 {
-        tonic::include_proto!("kms.v1");
+        tonic::include_proto!("fkms.v1");
         pub const FILE_DESCRIPTOR_SET: &[u8] =
-            tonic::include_file_descriptor_set!("kms_v1_descriptor");
+            tonic::include_file_descriptor_set!("fkms_v1_descriptor");
     }
 }
diff --git a/src/server/evm.rs b/src/server/evm.rs
index c7d9719..d6fc121 100644
--- a/src/server/evm.rs
+++ b/src/server/evm.rs
@@ -1,5 +1,5 @@
-use crate::proto::kms::v1::kms_evm_service_server::KmsEvmService;
-use crate::proto::kms::v1::{
+use crate::proto::fkms::v1::fkms_service_server::FkmsService;
+use crate::proto::fkms::v1::{
     GetSignerAddressesRequest, GetSignerAddressesResponse, SignEvmRequest, SignEvmResponse,
 };
 use crate::server::Server;
@@ -9,7 +9,7 @@ use tonic::{Request, Response, Status};
 use tracing::{error, info, instrument, warn};
 
 #[tonic::async_trait]
-impl KmsEvmService for Server {
+impl FkmsService for Server {
     #[instrument(skip(self, request))]
     async fn sign_evm(
         &self,