diff --git a/Cargo.lock b/Cargo.lock
index b02865d..0e507c4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -527,6 +527,10 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "cuprate-rpc-interface"
+version = "0.0.0"
+
 [[package]]
 name = "cuprate-test-utils"
 version = "0.1.0"
@@ -1198,6 +1202,10 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "json-rpc"
+version = "0.0.0"
+
 [[package]]
 name = "keccak"
 version = "0.1.5"
@@ -1392,6 +1400,10 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "monero-rpc-types"
+version = "0.0.0"
+
 [[package]]
 name = "monero-serai"
 version = "0.1.4-alpha"
diff --git a/Cargo.toml b/Cargo.toml
index 4b9bd63..630f14d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,6 +21,9 @@ members = [
 	"pruning",
 	"test-utils",
 	"types",
+	"rpc/json-rpc",
+	"rpc/monero-rpc-types",
+	"rpc/cuprate-rpc-interface",
 ]
 
 [profile.release]
diff --git a/rpc/README.md b/rpc/README.md
index 4640904..a93f2e0 100644
--- a/rpc/README.md
+++ b/rpc/README.md
@@ -1 +1,4 @@
-# TODO
+# RPC
+This directory contains Monero RPC types and Cuprate RPC's libraries.
+
+<!-- TODO: link to architecture book section. -->
diff --git a/rpc/cuprate-rpc-interface/Cargo.toml b/rpc/cuprate-rpc-interface/Cargo.toml
new file mode 100644
index 0000000..47af5cd
--- /dev/null
+++ b/rpc/cuprate-rpc-interface/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name        = "cuprate-rpc-interface"
+version     = "0.0.0"
+edition     = "2021"
+description = "Cuprate's RPC interface library"
+license     = "MIT"
+authors     = ["hinto-janai"]
+repository  = "https://github.com/Cuprate/cuprate/tree/main/rpc/cuprate-rpc-interface"
+keywords    = ["cuprate", "rpc", "interface"]
+
+[features]
+
+[dependencies]
+
+[dev-dependencies]
diff --git a/rpc/cuprate-rpc-interface/src/lib.rs b/rpc/cuprate-rpc-interface/src/lib.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/rpc/cuprate-rpc-interface/src/lib.rs
@@ -0,0 +1 @@
+
diff --git a/rpc/json-rpc/Cargo.toml b/rpc/json-rpc/Cargo.toml
new file mode 100644
index 0000000..2425cc6
--- /dev/null
+++ b/rpc/json-rpc/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name        = "json-rpc"
+version     = "0.0.0"
+edition     = "2021"
+description = "JSON-RPC 2.0 implementation"
+license     = "MIT"
+authors     = ["hinto-janai"]
+repository  = "https://github.com/Cuprate/cuprate/tree/main/rpc/json-rpc"
+keywords    = ["json", "rpc"]
+
+[features]
+
+[dependencies]
+
+[dev-dependencies]
diff --git a/rpc/json-rpc/src/lib.rs b/rpc/json-rpc/src/lib.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/rpc/json-rpc/src/lib.rs
@@ -0,0 +1 @@
+
diff --git a/rpc/monero-rpc-types/Cargo.toml b/rpc/monero-rpc-types/Cargo.toml
new file mode 100644
index 0000000..a32eedb
--- /dev/null
+++ b/rpc/monero-rpc-types/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name        = "monero-rpc-types"
+version     = "0.0.0"
+edition     = "2021"
+description = "Monero RPC types"
+license     = "MIT"
+authors     = ["hinto-janai"]
+repository  = "https://github.com/Cuprate/cuprate/tree/main/rpc/monero-rpc-types"
+keywords    = ["monero", "rpc", "types"]
+
+[features]
+
+[dependencies]
+
+[dev-dependencies]
diff --git a/rpc/monero-rpc-types/src/lib.rs b/rpc/monero-rpc-types/src/lib.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/rpc/monero-rpc-types/src/lib.rs
@@ -0,0 +1 @@
+