diff --git a/src/responder.h b/src/responder.h
new file mode 100644
index 0000000..37df828
--- /dev/null
+++ b/src/responder.h
@@ -0,0 +1,25 @@
+#ifndef LIBPLDM_SRC_RESPONDER_H
+#define LIBPLDM_SRC_RESPONDER_H
+
+#include <libpldm/base.h>
+#include <libpldm/instance-id.h>
+
+#include <stdint.h>
+
+struct pldm_responder_cookie {
+	pldm_tid_t tid;
+	pldm_instance_id_t instance_id;
+	uint8_t type;
+	uint8_t command;
+	struct pldm_responder_cookie *next;
+};
+
+int pldm_responder_cookie_track(struct pldm_responder_cookie *jar,
+				struct pldm_responder_cookie *cookie);
+
+struct pldm_responder_cookie *
+pldm_responder_cookie_untrack(struct pldm_responder_cookie *jar, pldm_tid_t tid,
+			      pldm_instance_id_t instance_id, uint8_t type,
+			      uint8_t command);
+
+#endif