Add changedSinceSlot on account fetch operations

rpc/getAccountInfo.go

@@ -85,6 +85,9 @@ type GetAccountInfoOpts struct {
 	// The minimum slot that the request can be evaluated at.
 	// This parameter is optional.
 	MinContextSlot *uint64
+
+	// Return only if the account(s) have changed since this slot
+	ChangedSinceSlot *uint64 `json:"changedSinceSlot,omitempty"`
 }
 
 // GetAccountInfoWithOpts returns all information associated with the account of provided publicKey.
@@ -135,6 +138,9 @@ func (cl *Client) getAccountInfoWithOpts(
 		if opts.MinContextSlot != nil {
 			obj["minContextSlot"] = *opts.MinContextSlot
 		}
+		if opts.ChangedSinceSlot != nil {
+			obj["changedSinceSlot"] = *opts.ChangedSinceSlot
+		}
 	}
 
 	params := []any{account}

rpc/getMultipleAccounts.go

@@ -68,6 +68,9 @@ func (cl *Client) GetMultipleAccountsWithOpts(
 		if opts.MinContextSlot != nil {
 			obj["minContextSlot"] = *opts.MinContextSlot
 		}
+		if opts.ChangedSinceSlot != nil {
+			obj["changedSinceSlot"] = *opts.ChangedSinceSlot
+		}
 		if len(obj) > 0 {
 			params = append(params, obj)
 		}

rpc/getProgramAccounts.go

@@ -59,6 +59,9 @@ func (cl *Client) GetProgramAccountsWithOpts(
 				"length": opts.DataSlice.Length,
 			}
 		}
+		if opts.ChangedSinceSlot != nil {
+			obj["changedSinceSlot"] = *opts.ChangedSinceSlot
+		}
 	}
 
 	params := []any{publicKey, obj}

rpc/types.go

@@ -406,6 +406,9 @@ type GetProgramAccountsOpts struct {
 	// Filter results using various filter objects;
 	// account must meet all filter criteria to be included in results.
 	Filters []RPCFilter `json:"filters,omitempty"`
+
+	// Return only the accounts that have changed since this slot
+	ChangedSinceSlot *uint64 `json:"changedSinceSlot,omitempty"`
 }
 
 type GetProgramAccountsResult []*KeyedAccount