diff --git a/README.md b/README.md
index 9dc5326..5d8884e 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,16 @@ Evalexpr is [available on crates.io](https://crates.io/crates/evalexpr), and its
 <!-- cargo-sync-readme start -->
 
 
+## CLI
+
+While primarily meant to be used as a library, `evalexpr` is also available as a command line tool.
+It can be installed and used as follows:
+
+```bash
+cargo install evalexpr
+evalexpr 2 + 3 # outputs `5` to stdout.
+```
+
 ## Quickstart
 
 Add `evalexpr` as dependency to your `Cargo.toml`:
diff --git a/src/lib.rs b/src/lib.rs
index cd28209..5d27d9e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,14 @@
 //!
+//! ## CLI
+//!
+//! While primarily meant to be used as a library, `evalexpr` is also available as a command line tool.
+//! It can be installed and used as follows:
+//!
+//! ```bash
+//! cargo install evalexpr
+//! evalexpr 2 + 3 # outputs `5` to stdout.
+//! ```
+//!
 //! ## Quickstart
 //!
 //! Add `evalexpr` as dependency to your `Cargo.toml`: