diff --git a/binaries/cuprated/src/rpc/constants.rs b/binaries/cuprated/src/rpc/constants.rs
new file mode 100644
index 0000000..a48e490
--- /dev/null
+++ b/binaries/cuprated/src/rpc/constants.rs
@@ -0,0 +1,17 @@
+//! TODO
+//!
+//! <https://github.com/monero-project/monero/blob/cc73fe71162d564ffda8e549b79a350bca53c454/src/rpc/core_rpc_server.cpp#L63-L77>
+
+pub const MAX_RESTRICTED_FAKE_OUTS_COUNT: usize = 40;
+pub const MAX_RESTRICTED_GLOBAL_FAKE_OUTS_COUNT: usize = 5000;
+
+/// 3 days max, the wallet requests 1.8: usize = days.
+pub const OUTPUT_HISTOGRAM_RECENT_CUTOFF_RESTRICTION: usize = 3 * 86400;
+
+pub const DEFAULT_PAYMENT_DIFFICULTY: usize = 1000;
+pub const DEFAULT_PAYMENT_CREDITS_PER_HASH: usize = 100;
+
+pub const RESTRICTED_BLOCK_HEADER_RANGE: usize = 1000;
+pub const RESTRICTED_TRANSACTIONS_COUNT: usize = 100;
+pub const RESTRICTED_SPENT_KEY_IMAGES_COUNT: usize = 5000;
+pub const RESTRICTED_BLOCK_COUNT: usize = 1000;