diff --git a/examples/htool_key_rotation.c b/examples/htool_key_rotation.c
index f5cf655..516eddd 100644
--- a/examples/htool_key_rotation.c
+++ b/examples/htool_key_rotation.c
@@ -43,7 +43,8 @@ static const char *get_validation_method_string(uint32_t validation_method) {
   }
 }
 
-int htool_key_rotation_get_status(void) {
+int htool_key_rotation_get_status(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device *dev = htool_libhoth_device();
   if (!dev) {
     return -1;
@@ -65,7 +66,8 @@ int htool_key_rotation_get_status(void) {
   return 0;
 }
 
-int htool_key_rotation_get_version(void) {
+int htool_key_rotation_get_version(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device *dev = htool_libhoth_device();
   if (!dev) {
     return -1;
@@ -161,7 +163,8 @@ int htool_key_rotation_update(const struct htool_invocation *inv) {
   return result;
 }
 
-int htool_key_rotation_payload_status() {
+int htool_key_rotation_payload_status(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device *dev = htool_libhoth_device();
   if (!dev) {
     return -1;
diff --git a/examples/htool_key_rotation.h b/examples/htool_key_rotation.h
index 9c15ebf..f5a9671 100644
--- a/examples/htool_key_rotation.h
+++ b/examples/htool_key_rotation.h
@@ -23,9 +23,9 @@ extern "C" {
 #endif
 
 struct htool_invocation;
-int htool_key_rotation_get_status();
-int htool_key_rotation_get_version();
-int htool_key_rotation_payload_status();
+int htool_key_rotation_get_status(const struct htool_invocation* inv);
+int htool_key_rotation_get_version(const struct htool_invocation* inv);
+int htool_key_rotation_payload_status(const struct htool_invocation* inv);
 int htool_key_rotation_read(const struct htool_invocation* inv);
 int htool_key_rotation_read_chunk_type(const struct htool_invocation* inv);
 int htool_key_rotation_update(const struct htool_invocation* inv);
diff --git a/examples/htool_payload.c b/examples/htool_payload.c
index cada560..481ef70 100644
--- a/examples/htool_payload.c
+++ b/examples/htool_payload.c
@@ -29,7 +29,8 @@
 #include "protocol/payload_info.h"
 #include "protocol/payload_status.h"
 
-int htool_payload_status() {
+int htool_payload_status(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device* dev = htool_libhoth_device();
   if (!dev) {
     return -1;
diff --git a/examples/htool_payload.h b/examples/htool_payload.h
index f218034..82c77ac 100644
--- a/examples/htool_payload.h
+++ b/examples/htool_payload.h
@@ -24,7 +24,7 @@
 extern "C" {
 #endif
 
-int htool_payload_status();
+int htool_payload_status(const struct htool_invocation* inv);
 int htool_payload_info(const struct htool_invocation* inv);
 
 #ifdef __cplusplus
diff --git a/examples/htool_payload_update.c b/examples/htool_payload_update.c
index c26e77b..258ccb6 100644
--- a/examples/htool_payload_update.c
+++ b/examples/htool_payload_update.c
@@ -172,7 +172,8 @@ const char* payload_update_getstatus_half_string(uint8_t h) {
   }
 }
 
-int htool_payload_update_getstatus() {
+int htool_payload_update_getstatus(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device* dev = htool_libhoth_device();
   if (!dev) {
     return -1;
diff --git a/examples/htool_payload_update.h b/examples/htool_payload_update.h
index a5d85bc..f9c6a16 100644
--- a/examples/htool_payload_update.h
+++ b/examples/htool_payload_update.h
@@ -25,7 +25,7 @@ extern "C" {
 struct htool_invocation;
 int htool_payload_update(const struct htool_invocation* inv);
 int htool_payload_read(const struct htool_invocation* inv);
-int htool_payload_update_getstatus();
+int htool_payload_update_getstatus(const struct htool_invocation* inv);
 
 #ifdef __cplusplus
 }
diff --git a/examples/htool_statistics.c b/examples/htool_statistics.c
index 4c5b536..f79363d 100644
--- a/examples/htool_statistics.c
+++ b/examples/htool_statistics.c
@@ -178,7 +178,8 @@ const char* PayloadUpdateErrorToString(uint16_t reason) {
   }
 }
 
-int htool_statistics() {
+int htool_statistics(const struct htool_invocation* inv) {
+  (void)inv;
   struct libhoth_device* dev = htool_libhoth_device();
   if (!dev) {
     return -1;
diff --git a/examples/htool_statistics.h b/examples/htool_statistics.h
index 2dd59b6..fe54eda 100644
--- a/examples/htool_statistics.h
+++ b/examples/htool_statistics.h
@@ -19,7 +19,8 @@
 extern "C" {
 #endif
 
-int htool_statistics();
+struct htool_invocation;
+int htool_statistics(const struct htool_invocation* inv);
 
 #ifdef __cplusplus
 }