diff --git a/packages/experimental/liveshare-protocol/tsconfig.client.json b/packages/experimental/liveshare-protocol/tsconfig.client.json
new file mode 100644
index 0000000000..abfaf50195
--- /dev/null
+++ b/packages/experimental/liveshare-protocol/tsconfig.client.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types",
+    "tsBuildInfoFile": "lib/tsconfig.client.tsbuildinfo"
+  },
+  "files": [
+    "src/viewer-carrier.ts",
+    "src/viewer-states.ts",
+    "src/identity/types.ts"
+  ]
+}
diff --git a/packages/experimental/liveshare-protocol/tsconfig.host.json b/packages/experimental/liveshare-protocol/tsconfig.host.json
new file mode 100644
index 0000000000..f5a809fc26
--- /dev/null
+++ b/packages/experimental/liveshare-protocol/tsconfig.host.json
@@ -0,0 +1,23 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types",
+    "tsBuildInfoFile": "lib/tsconfig.host.tsbuildinfo"
+  },
+  "files": [
+    "src/index.ts",
+    "src/tunnel-protocol.ts",
+    "src/viewer-carrier.ts",
+    "src/viewer-states.ts",
+    "src/identity/index.ts",
+    "src/identity/keys.ts",
+    "src/identity/mock.ts",
+    "src/identity/types.ts"
+  ],
+  "references": [
+    {
+      "path": "../../util/brand"
+    }
+  ]
+}
diff --git a/packages/experimental/liveshare-protocol/tsconfig.json b/packages/experimental/liveshare-protocol/tsconfig.json
index 49c9b83b15..2a0b0e33f7 100644
--- a/packages/experimental/liveshare-protocol/tsconfig.json
+++ b/packages/experimental/liveshare-protocol/tsconfig.json
@@ -1,14 +1,7 @@
 {
-  "extends": "../../../tsconfig.base.json",
-  "compilerOptions": {
-    "rootDir": "src",
-    "outDir": "lib/types",
-    "tsBuildInfoFile": "lib/tsconfig.tsbuildinfo"
-  },
-  "include": [
-    "src"
-  ],
+  "files": [],
   "references": [
-    { "path": "../../util/brand" }
+    { "path": "./tsconfig.host.json" },
+    { "path": "./tsconfig.client.json" }
   ]
 }
diff --git a/packages/experimental/liveshare-protocol/tsdown.config.ts b/packages/experimental/liveshare-protocol/tsdown.config.ts
index c85992b686..3c0c1ca7b5 100644
--- a/packages/experimental/liveshare-protocol/tsdown.config.ts
+++ b/packages/experimental/liveshare-protocol/tsdown.config.ts
@@ -1,7 +1,12 @@
 import type { UserConfig } from 'tsdown'
 import { defineConfig } from 'tsdown'
 
-/** Dependency-free Host code shared by the owner bundle and the Relay: no browser face. */
+/**
+ * Dependency-free code shared by the owner bundle and the Relay. The package carries two compiler
+ * faces — a Host leaf for the wire codecs and identity contract, and a browser leaf for the viewer
+ * carrier — but only the Host face publishes runtime modules; the carrier reaches a browser as
+ * generated source text, so it needs no client bundle.
+ */
 export default defineConfig(({ env }) => {
   if (env?.DSH_BUILD_FACE === 'client') return { entry: '' } satisfies UserConfig
   return {
diff --git a/tsconfig.client.json b/tsconfig.client.json
index 91cfdb1075..7e4eb91773 100644
--- a/tsconfig.client.json
+++ b/tsconfig.client.json
@@ -89,7 +89,7 @@
     { "path": "./packages/client/ui-primitives" },
     { "path": "./packages/client/modules" },
     { "path": "./packages/experimental/inspector/tsconfig.client.json" },
-    { "path": "./packages/experimental/liveshare-protocol" },
+    { "path": "./packages/experimental/liveshare-protocol/tsconfig.client.json" },
     { "path": "./packages/experimental/session-inspector" },
     { "path": "./packages/client/hmr" },
     { "path": "./packages/client/connection/tsconfig.client.json" },
diff --git a/tsconfig.host.json b/tsconfig.host.json
index df6820bd48..a8196f66f8 100644
--- a/tsconfig.host.json
+++ b/tsconfig.host.json
@@ -528,7 +528,7 @@
     { "path": "./packages/experimental/agent-team" },
     { "path": "./packages/experimental/agent-team-profile" },
     { "path": "./packages/experimental/inspector-profile" },
-    { "path": "./packages/experimental/liveshare-protocol" },
+    { "path": "./packages/experimental/liveshare-protocol/tsconfig.host.json" },
     { "path": "./packages/experimental/tool-agent-team" },
     { "path": "./packages/workflow/workflow" },
     { "path": "./packages/workflow/workflow-ptc" },