diff --git a/argus-core/src/lib.rs b/argus-core/src/lib.rs
index ed74f4b..596e0ac 100644
--- a/argus-core/src/lib.rs
+++ b/argus-core/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod expr;
+pub mod prelude;
 pub mod signals;
 
 use std::time::Duration;
diff --git a/argus-core/src/prelude.rs b/argus-core/src/prelude.rs
new file mode 100644
index 0000000..9ea27f4
--- /dev/null
+++ b/argus-core/src/prelude.rs
@@ -0,0 +1,4 @@
+pub use crate::expr::{Expr, ExprBuilder, ExprRef};
+pub use crate::signals::{AnySignal, ConstantSignal, Signal};
+
+pub use crate::{ArgusError, ArgusResult};