diff --git a/Cargo.lock b/Cargo.lock
index c2c47ce937..279c8c1fc2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6239,6 +6239,19 @@ dependencies = [
  "trios-browser-bw00",
 ]
 
+[[package]]
+name = "trios-chat"
+version = "0.1.0"
+dependencies = [
+ "ed25519-dalek",
+ "rand 0.8.6",
+ "rand_core 0.6.4",
+ "serde",
+ "serde_json",
+ "trios-chat-br-output",
+ "x25519-dalek",
+]
+
 [[package]]
 name = "trios-chat-br-io-chat-05"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index d15b73ef45..b896afec00 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -71,6 +71,7 @@ members = [
     "crates/trios-chat/rings/BR-OUTPUT-CHAT",
     "crates/trios-chat/rings/BR-IO-CHAT-05",
     "crates/trios-chat/rings/BR-IO-CHAT-07",
+    "crates/trios-chat",
     # Rust backend consolidation (Wave 0) — domain scaffolds
     "crates/trios-agent-loop",
     "crates/trios-agent-loop/rings/AL-00",