diff --git a/README.md b/README.md
index 5f2960e..44ece5b 100644
--- a/README.md
+++ b/README.md
@@ -5,16 +5,10 @@ This project provides Rust bindings for DLT and a tracing subscriber that allows
 
 ## 📖 Documentation
 
-[DLT Sys documentation](https://htmlpreview.github.io/?https://github.com/eclipse-opensovd/dlt-tracing-lib/blob/main/docs/dlt_sys/index.html)
+* [tracing-dlt](https://eclipse-opensovd.github.io/dlt-tracing-lib/tracing_dlt/index.html)
+* [dlt_rs](https://eclipse-opensovd.github.io/dlt-tracing-lib/dlt_rs/index.html)
+* [dlr_sys](https://eclipse-opensovd.github.io/dlt-tracing-lib/dlt_sys/index.html)
 
-[DLT Trace Appender documentation](https://htmlpreview.github.io/?https://github.com/eclipse-opensovd/dlt-tracing-lib/blob/main/docs/dlt_tracing_appender/index.html)
-
-
-The documentation includes detailed examples, usage patterns, and API reference for all crates.
-Get it by running:
-```bash
- cargo doc --no-deps --all-features
-```
 
 ## Overview
 
diff --git a/dlt-sys/src/lib.rs b/dlt-sys/src/lib.rs
index beef2de..2db4e1a 100644
--- a/dlt-sys/src/lib.rs
+++ b/dlt-sys/src/lib.rs
@@ -11,6 +11,53 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+//! Low-level FFI bindings to the COVESA DLT (Diagnostic Log and Trace) C library (`libdlt`).
+//!
+//! # Overview
+//!
+//! `dlt-sys` provides unsafe Rust bindings to the
+//! [COVESA DLT daemon](https://github.com/COVESA/dlt-daemon) C library.
+//! This crate is intended to be used as a foundation for higher-level safe
+//! Rust abstractions (see [`dlt-rs`](https://crates.io/crates/dlt-rs)).
+//!
+//! **Note:** This crate only implements functionality required for `dlt-rs` and does not cover
+//! the entire `libdlt` API.
+//!
+//! # Features
+//!
+//! - Direct FFI bindings to `libdlt` functions
+//! - Custom C wrapper for improved API ergonomics
+//! - Support for all DLT log levels and message types
+//! - Optional `trace_load_ctrl` feature for load control support
+//!
+//! # Prerequisites
+//!
+//! **libdlt** and its development headers must be installed on your system.
+//!
+//! # Usage
+//!
+//! This is a low-level crate with unsafe APIs. Most users should use
+//! [`dlt-rs`](https://crates.io/crates/dlt-rs) instead for a safe, idiomatic Rust API.
+//!
+//! # Cargo Features
+//!
+//! - `trace_load_ctrl` - Enable DLT load control support
+//! - `generate-bindings` - Regenerate bindings from C headers (development only)
+//!
+//! # Safety
+//!
+//! All functions in this crate are `unsafe` as they directly call C library functions.
+//! Proper usage requires understanding of:
+//! - DLT library initialization and cleanup
+//! - Memory management across FFI boundaries
+//! - Thread safety considerations
+//!
+//! For safe abstractions, use the [`dlt-rs`](https://crates.io/crates/dlt-rs) crate.
+//!
+//! # References
+//!
+//! - [COVESA DLT Daemon](https://github.com/COVESA/dlt-daemon)
+
 #[rustfmt::skip]
 #[allow(clippy::all,
     dead_code,