work on pay api

1 files changed, 13 insertions, 6 deletions

diff --git a/core/api-merchant.rst b/core/api-merchant.rst
index f3801cbf..0b0e0b87 100644
--- a/core/api-merchant.rst
+++ b/core/api-merchant.rst
@@ -350,11 +350,6 @@ Making the payment
       // The coins used to make the payment.
       coins: CoinPaySig[];
 
-      // Index of the selected choice within the ``choices`` array of
-      // the contract terms.
-      // @since protocol **vSUBSCRIBE**
-      choice_index?: Integer;
-
       // Input tokens required by choice indicated by ``choice_index``.
       // @since protocol **vSUBSCRIBE**
       tokens?: TokenUseSig[];
@@ -365,7 +360,7 @@ Making the payment
       tokens_evs?: TokenEnvelope[];
 
       // Custom inputs from the wallet for the contract.
-      wallet_data?: Object;
+      wallet_data?: PayWalletData;
 
       // The session for which the payment is made (or replayed).
       // Only set for session-based payments.
@@ -373,6 +368,18 @@ Making the payment
 
     }
 
+  .. ts:def:: PayWalletData
+
+    interface PayWalletData {
+      // Index of the selected choice within the ``choices`` array of
+      // the contract terms.
+      // @since protocol **vSUBSCRIBE**
+      choice_index?: Integer;
+
+      // Output commitment. Hash over output token envelopes.
+      h_outputs?: HashCode;
+    }
+
   .. ts:def:: CoinPaySig
 
     export interface CoinPaySig {