diff --git a/include/dfu/mcuboot.h b/include/dfu/mcuboot.h
index 141e25336ba..e8a8641c389 100644
--- a/include/dfu/mcuboot.h
+++ b/include/dfu/mcuboot.h
@@ -8,11 +8,33 @@
 #ifndef __MCUBOOT_H__
 #define __MCUBOOT_H__
 
+#include <stdbool.h>
+
 /**
- * @brief Marks the image in slot 0 as confirmed. The system will continue
- * booting into the image in slot 0 until told to boot from a different slot.
+ * @brief Check if the currently running image is confirmed as OK.
  *
- * This call is expected to be used by the application running on trial.
+ * MCUboot can perform "test" upgrades. When these occur, a new
+ * firmware image is installed and booted, but the old version will be
+ * reverted at the next reset unless the new image explicitly marks
+ * itself OK.
+ *
+ * This routine can be used to check if the currently running image
+ * has been marked as OK.
+ *
+ * @return True if the image is confirmed as OK, false otherwise.
+ * @see boot_write_img_confirmed()
+ */
+bool boot_is_img_confirmed(void);
+
+/**
+ * @brief Marks the currently running image as confirmed.
+ *
+ * This routine attempts to mark the currently running firmware image
+ * as OK, which will install it permanently, preventing MCUboot from
+ * reverting it for an older image at the next reset.
+ *
+ * This routine is safe to call if the current image has already been
+ * confirmed. It will return a successful result in this case.
  *
  * @return 0 on success, negative errno code on fail.
  */
diff --git a/subsys/dfu/boot/mcuboot.c b/subsys/dfu/boot/mcuboot.c
index 4fc3013024d..c418ac2217b 100644
--- a/subsys/dfu/boot/mcuboot.c
+++ b/subsys/dfu/boot/mcuboot.c
@@ -168,6 +168,11 @@ int boot_request_upgrade(int permanent)
 	return rc;
 }
 
+bool boot_is_img_confirmed(void)
+{
+	return boot_image_ok_read(FLASH_BANK0_OFFSET) == BOOT_FLAG_SET;
+}
+
 int boot_write_img_confirmed(void)
 {
 	int rc;