diff --git a/src/api.ml b/src/api.ml
index 89d9f123..6ad594d8 100644
--- a/src/api.ml
+++ b/src/api.ml
@@ -857,3 +857,30 @@ module AuditorDenominationKey = struct
     |> mem "auditor_sig" ExchangeKeyValidityPS.jsont ~enc:auditor_sig
     |> finish
 end
+
+module AuditorKeys = struct
+  type t = {
+    auditor_pub: EddsaPublicKey.t;
+    auditor_url: string;
+    auditor_name: string;
+    denomination_keys: AuditorDenominationKey.t list;
+  }
+
+  let jsont =
+    let make auditor_pub auditor_url auditor_name denomination_keys =
+      { auditor_pub; auditor_url; auditor_name; denomination_keys }
+    in
+    let auditor_pub v = v.auditor_pub in
+    let auditor_url v = v.auditor_url in
+    let auditor_name v = v.auditor_name in
+    let denomination_keys v = v.denomination_keys in
+    let open Jsont.Object in
+    map ~kind:"AuditorKeys" make
+    |> mem "auditor_pub" EddsaPublicKey.jsont ~enc:auditor_pub
+    |> mem "auditor_url" Jsont.string ~enc:auditor_url
+    |> mem "auditor_name" Jsont.string ~enc:auditor_name
+    |> mem "denomination_keys"
+         (Jsont.list AuditorDenominationKey.jsont)
+         ~enc:denomination_keys
+    |> finish
+end