diff --git a/rust/bt-broadcast-assistant/README.md b/rust/bt-broadcast-assistant/README.md
new file mode 100644
index 0000000..a6b9175
--- /dev/null
+++ b/rust/bt-broadcast-assistant/README.md
@@ -0,0 +1,75 @@
+# bt-broadcast-assistant
+
+This crate implements the **Broadcast Assistant** role defined in the Bluetooth SIG [Basic Audio Profile (BAP) v1.0.2][bap] specification.
+
+A Broadcast Assistant is a Bluetooth Low Energy (LE) device (typically a smartphone or tablet) that discovers Broadcast Sources and assists Broadcast Sinks (Scan Delegators) in synchronizing to LE Audio broadcast streams.
+
+## Overview
+
+The `bt-broadcast-assistant` crate handles:
+
+1. **Broadcast Source Discovery & Synchronization:**
+   - **Extended Advertising (EA) Scanning:** Scans for advertisements containing the Broadcast Audio Announcement Service UUID (`0x1852`) to extract the `Broadcast_ID` and `Broadcast_Name`.
+   - **Periodic Advertising (PA) Synchronization:** Automatically establishes Periodic Advertising sync using the platform's `bt_gatt::periodic_advertising::PeriodicAdvertising` trait when the Basic Audio Announcement Endpoint (BASE) structure (`0x1851`) is needed.
+   - **BASE Extraction:** Parses subgroups, Codec IDs, Codec Specific Configurations, Metadata, and BIS indices from the PA train data.
+   - **Resource Management:** Automatically cancels the PA sync once complete broadcast source information is gathered.
+
+2. **Scan Delegator Management:**
+   - Scans for peers advertising the Broadcast Audio Scan Service (BASS, `0x184F`).
+   - Establishes GATT connections to Scan Delegators and provides high-level control operations via `bt_bass::BroadcastAudioScanServiceClient`:
+     - Add Broadcast Source
+     - Modify Broadcast Source
+     - Remove Broadcast Source
+     - Set Broadcast Code
+
+3. **Platform Independence:**
+   - Uses the [`bt-gatt`][bt-gatt] crate interface to remain Bluetooth stack- and async executor-agnostic.
+   - On Fuchsia, integrated via `bt-gatt-fuchsia` (`FuchsiaTypes`).
+
+## Architecture
+
+```text
+                  +--------------------------------+
+                  |    BroadcastAssistant<T>       |
+                  +--------------------------------+
+                     /                          \
+       +-----------------------+      +-----------------------+
+       |   EventStream<T>      |      |   Peer<T>             |
+       | (Source Discovery &   |      | (BASS Client for      |
+       |  PA Sync via BASE)    |      |  Scan Delegator)      |
+       +-----------------------+      +-----------------------+
+                     \                          /
+                  +--------------------------------+
+                  |  T: bt_gatt::GattTypes         |
+                  +--------------------------------+
+```
+
+## Usage Example
+
+```rust,no_run
+# use futures::StreamExt;
+# use bt_broadcast_assistant::assistant::Error;
+use bt_broadcast_assistant::{event::Event, BroadcastAssistant};
+use bt_gatt::central::Central;
+
+async fn run_assistant<T: bt_gatt::GattTypes + 'static>(central: T::Central) -> Result<(), Error> {
+    let mut assistant = BroadcastAssistant::<T>::new(central);
+    // Start scanning for broadcast sources (EA + PA sync)
+    let mut event_stream = assistant.start()?;
+    while let Some(event_res) = event_stream.next().await {
+        match event_res? {
+            Event::FoundBroadcastSource { peer, advertising_sid, source } => {
+                println!("Discovered complete broadcast source: {:?}", source);
+                // Can now add this source to a connected scan delegator peer!
+            }
+            Event::CouldNotParseAdvertisingData { peer, error } => {
+                eprintln!("Failed to parse advertisement from peer {:?}: {:?}", peer, error);
+            }
+        }
+    }
+    Ok(())
+}
+```
+
+[bap]: https://www.bluetooth.com/specifications/specs/basic-audio-profile-1-0-2/
+[bt-gatt]: ../bt-gatt/README.md
diff --git a/rust/bt-broadcast-assistant/TODO.md b/rust/bt-broadcast-assistant/TODO.md
new file mode 100644
index 0000000..857e2d6
--- /dev/null
+++ b/rust/bt-broadcast-assistant/TODO.md
@@ -0,0 +1,28 @@
+# TODO: BAP Broadcast Assistant Implementation
+
+## Phase 1: Broadcast Source Discovery & PA Synchronization
+ - [x] Define scan filters for Broadcast Audio Announcement Service (`0x1852`).
+ - [x] Parse `Broadcast_ID` and `Broadcast_Name` from Extended Advertising (EA) payloads.
+ - [x] Integrate `bt_gatt::periodic_advertising::PeriodicAdvertising` trait for establishing PA sync when BASE data is missing.
+ - [x] Parse Basic Audio Announcement Service (`0x1851`) BASE structure (subgroups, Codec IDs, Codec Configurations, Metadata, BIS indices).
+ - [x] Merge discovered BASE endpoint into internal `BroadcastSource` state.
+ - [x] Automatically abort/cancel PA sync once complete source information is gathered to conserve system resources.
+
+## Phase 2: Scan Delegator Discovery & BASS Client Integration
+ - [x] Define scan filters for Broadcast Audio Scan Service (BASS, `0x184F`).
+ - [x] Implement connection procedure to Scan Delegator peers.
+ - [x] Instantiate `BroadcastAudioScanServiceClient` over discovered GATT service.
+ - [x] Stream BASS events (Receive State characteristic updates) to upper layers.
+
+## Phase 3: Control Point Operations & Delegation
+ - [x] Implement `Add Source` control point operation (`add_broadcast_source`).
+ - [x] Implement `Modify Source` control point operation (`modify_broadcast_source`).
+ - [x] Implement `Remove Source` control point operation (`remove_broadcast_source`).
+ - [x] Implement `Set Broadcast Code` control point operation (`set_broadcast_code`).
+ - [ ] Implement Periodic Advertising Sync Transfer (PAST) offloading procedure for platforms supporting PAST.
+
+## Phase 4: Refinement, Advanced Features & Testing
+ - [x] Provide force discovery/debug mock helpers for testing without hardware radio.
+ - [ ] Support high-level multi-subgroup / multi-BIS synchronization selection helpers.
+ - [ ] Enhanced error handling for PA sync loss / establishment failures during scanning.
+ - [ ] End-to-end integration tests with real/mocked platform BLE controller.
diff --git a/rust/bt-broadcast-assistant/src/lib.rs b/rust/bt-broadcast-assistant/src/lib.rs
index bf0aeb4..5a814ed 100644
--- a/rust/bt-broadcast-assistant/src/lib.rs
+++ b/rust/bt-broadcast-assistant/src/lib.rs
@@ -2,7 +2,40 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+//! This crate implements the **Broadcast Assistant** role defined in the
+//! Bluetooth SIG Basic Audio Profile (BAP) v1.0.2 specification.
+//!
+//! A Broadcast Assistant is a Bluetooth Low Energy (LE) device that discovers
+//! Broadcast Sources and assists Broadcast Sinks (Scan Delegators) in
+//! synchronizing to LE Audio broadcast streams.
+//!
+//! # Usage Example
+//!
+//! ```rust,no_run
+//! use futures::StreamExt;
+//! use bt_broadcast_assistant::assistant::Error;
+//! use bt_broadcast_assistant::{event::Event, BroadcastAssistant};
+//! use bt_gatt::central::Central;
+//!
+//! async fn run_assistant<T: bt_gatt::GattTypes + 'static>(central: T::Central) -> Result<(), Error> {
+//!     let mut assistant = BroadcastAssistant::<T>::new(central);
+//!     let mut event_stream = assistant.start()?;
+//!     while let Some(event_res) = event_stream.next().await {
+//!         match event_res? {
+//!             Event::FoundBroadcastSource { peer, advertising_sid, source } => {
+//!                 println!("Discovered complete broadcast source: {:?}", source);
+//!             }
+//!             Event::CouldNotParseAdvertisingData { peer, error } => {
+//!                 eprintln!("Failed to parse advertisement from peer {:?}: {:?}", peer, error);
+//!             }
+//!         }
+//!     }
+//!     Ok(())
+//! }
+//! ```
+
 pub mod assistant;
+pub use assistant::event;
 pub use assistant::BroadcastAssistant;
 pub mod debug;
 pub mod types;
diff --git a/rust/bt-broadcast-assistant/src/types.rs b/rust/bt-broadcast-assistant/src/types.rs
index 021d86b..c953f75 100644
--- a/rust/bt-broadcast-assistant/src/types.rs
+++ b/rust/bt-broadcast-assistant/src/types.rs
@@ -12,7 +12,6 @@
 /// Broadcast source data as advertised through Basic Audio Announcement
 /// PA and Broadcast Audio Announcement.
 /// See BAP spec v1.0.1 Section 3.7.2.1 and Section 3.7.2.2 for details.
-// TODO(b/308481381): fill out endpoint from basic audio announcement from PA trains.
 #[derive(Clone, Default, Debug, PartialEq)]
 pub struct BroadcastSource {
     pub(crate) address: Option<Address>,