diff --git a/src/plugins/eva/Eva.mli b/src/plugins/eva/Eva.mli
index 9f0d113f7872764ec2b03a6e57414fb0f83af1ec..5fc9ded3be8d4c07e658455346c9484de411fab1 100644
--- a/src/plugins/eva/Eva.mli
+++ b/src/plugins/eva/Eva.mli
@@ -212,8 +212,9 @@ module Results: sig
   (** Just before a statement or at the start of the analysis. *)
   val before_kinstr : Cil_types.kinstr -> request
 
-  (** Evaluation in a given cvalue state.
-      Callstacks selection are silently ignored on such requests. *)
+  (** Evaluation in a given cvalue state. Callstacks selection are silently
+      ignored on such requests. For internal use, could be modified or removed
+      in a future version. *)
   val in_cvalue_state : Cvalue.Model.t -> request
 
 
@@ -594,7 +595,10 @@ end
 module Cvalue_callbacks: sig
 
   (** Register actions to performed during the Eva analysis,
-      with access to the states of the cvalue domain. *)
+      with access to the states of the cvalue domain.
+      This API is for internal use only, and may be modified or removed
+      in a future version. Please contact us if you need to register callbacks
+      to be executed during an Eva analysis. *)
 
   type callstack = (Cil_types.kernel_function * Cil_types.kinstr) list
   type state = Cvalue.Model.t
@@ -674,6 +678,10 @@ module Logic_inout: sig
 end
 
 module Eva_results: sig
+
+  (** Internal temporary API: please do not use it, as it should be removed in a
+      future version. *)
+
   type results
 
   val get_results: unit -> results
diff --git a/src/plugins/eva/utils/cvalue_callbacks.mli b/src/plugins/eva/utils/cvalue_callbacks.mli
index cb26f37aa10beb18fff6f8edc4f9e4eaff19445c..3122b1b3c6554bb3e68d48c5cc320016cc2149cc 100644
--- a/src/plugins/eva/utils/cvalue_callbacks.mli
+++ b/src/plugins/eva/utils/cvalue_callbacks.mli
@@ -23,7 +23,10 @@
 [@@@ api_start]
 
 (** Register actions to performed during the Eva analysis,
-    with access to the states of the cvalue domain. *)
+    with access to the states of the cvalue domain.
+    This API is for internal use only, and may be modified or removed
+    in a future version. Please contact us if you need to register callbacks
+    to be executed during an Eva analysis. *)
 
 type callstack = (Cil_types.kernel_function * Cil_types.kinstr) list
 type state = Cvalue.Model.t
diff --git a/src/plugins/eva/utils/eva_results.mli b/src/plugins/eva/utils/eva_results.mli
index 6144615c2e453f9366bd1c1c096c4418784439ab..19e35f6bd7b67061ba4db590f2d0f1ea614690bf 100644
--- a/src/plugins/eva/utils/eva_results.mli
+++ b/src/plugins/eva/utils/eva_results.mli
@@ -30,6 +30,10 @@ val is_non_terminating_instr: stmt -> bool
 (** {2 Results} *)
 
 [@@@ api_start]
+
+(** Internal temporary API: please do not use it, as it should be removed in a
+    future version. *)
+
 type results
 
 val get_results: unit -> results
diff --git a/src/plugins/eva/utils/results.mli b/src/plugins/eva/utils/results.mli
index 30806c774755a5114c59b667d395390b4167b860..ec7bc51d785b9b4c67436b2af5f527584a4412d6 100644
--- a/src/plugins/eva/utils/results.mli
+++ b/src/plugins/eva/utils/results.mli
@@ -117,8 +117,9 @@ val after : Cil_types.stmt -> request
 (** Just before a statement or at the start of the analysis. *)
 val before_kinstr : Cil_types.kinstr -> request
 
-(** Evaluation in a given cvalue state.
-    Callstacks selection are silently ignored on such requests. *)
+(** Evaluation in a given cvalue state. Callstacks selection are silently
+    ignored on such requests. For internal use, could be modified or removed
+    in a future version. *)
 val in_cvalue_state : Cvalue.Model.t -> request