diff --git a/api/Cargo.lock b/api/Cargo.lock
new file mode 100644
index 0000000..8b230ee
--- /dev/null
+++ b/api/Cargo.lock
@@ -0,0 +1,72 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "api"
+version = "0.1.0"
+dependencies = [
+ "num-derive",
+ "num-traits",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "num-derive"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "proc-macro2"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.35"
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+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
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+checksum = "74f1bdc9872430ce9b75da68329d1c1746faf50ffac5f19e02b71e37ff881ffb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
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diff --git a/api/Cargo.toml b/api/Cargo.toml
new file mode 100644
index 0000000..d99c64d
--- /dev/null
+++ b/api/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "api"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+num-traits = { version = "0.2", default-features = false }
+num-derive = "0.4"
diff --git a/api/src/cap.rs b/api/src/cap.rs
new file mode 100644
index 0000000..6f078fd
--- /dev/null
+++ b/api/src/cap.rs
@@ -0,0 +1,20 @@
+#[derive(Clone, Copy, FromPrimitive, ToPrimitive)]
+pub enum ObjectType {
+    Null         = 0,
+    CNode        = 1,
+    TCB          = 2,
+    SchedCtx     = 3,
+    Endpoint     = 4,
+    Reply        = 5,
+    Notification = 6,
+    Frame        = 7,
+    PageTable    = 8,
+    Interrupt    = 9,
+    Untyped      = 10,
+}
+
+impl Default for ObjectType {
+    fn default() -> Self {
+        Self::Null
+    }
+}
diff --git a/api/src/lib.rs b/api/src/lib.rs
new file mode 100644
index 0000000..3709a49
--- /dev/null
+++ b/api/src/lib.rs
@@ -0,0 +1,6 @@
+#![no_std]
+
+#[macro_use]
+extern crate num_derive;
+
+pub mod cap;