diff --git a/boltconn/src/app.rs b/boltconn/src/app.rs
index b83bafd..0b8e727 100644
--- a/boltconn/src/app.rs
+++ b/boltconn/src/app.rs
@@ -459,7 +459,7 @@ async fn initialize_dns(
 
 fn start_instrument_services(bus: Arc<MessageBus>, config: Option<&RawInstrumentConfig>) {
     if let Some(config) = config {
-        let web_server = InstrumentServer::new(config.api_key.clone(), bus.clone());
+        let web_server = InstrumentServer::new(config.secret.clone(), bus.clone());
         let addr = config.api_addr.as_socket_addr(default_inbound_ip_addr);
         let cors_allowed_list = config.cors_allowed_list.clone();
         tokio::spawn(async move { web_server.run(addr, cors_allowed_list.as_slice()).await });
diff --git a/boltconn/src/config/config.rs b/boltconn/src/config/config.rs
index a2d625e..36aebaf 100644
--- a/boltconn/src/config/config.rs
+++ b/boltconn/src/config/config.rs
@@ -98,11 +98,11 @@ pub struct RawWebControllerConfig {
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct RawInstrumentConfig {
     #[serde(alias = "api-port", alias = "api-addr")]
     pub api_addr: PortOrSocketAddr,
-    #[serde(alias = "api-key")]
-    pub api_key: Option<String>,
+    pub secret: Option<String>,
     #[serde(alias = "cors-allowed-list", default = "default_str_vec")]
     pub cors_allowed_list: Vec<String>,
 }
diff --git a/boltconn/src/external/instrument_server.rs b/boltconn/src/external/instrument_server.rs
index aa59994..a6222a6 100644
--- a/boltconn/src/external/instrument_server.rs
+++ b/boltconn/src/external/instrument_server.rs
@@ -31,7 +31,7 @@ impl InstrumentServer {
         listen_addr: SocketAddr,
         cors_allowed_list: &[String],
     ) -> Result<(), RuntimeError> {
-        let secret = Arc::new(self.secret.clone());
+        let secret = Arc::new(None); // We verify the secret in the subscribe parameters
         let cors_vec = parse_cors_allow(cors_allowed_list);
         let auth_wrapper = move |r| web_auth(secret.clone(), r, cors_vec.clone());