diff --git a/Sources/AstrolabeCLI/CommandLine/AstrolabeHostMetadata.swift b/Sources/AstrolabeCLI/CommandLine/AstrolabeHostMetadata.swift
index aaccf69..ea9fc3c 100644
--- a/Sources/AstrolabeCLI/CommandLine/AstrolabeHostMetadata.swift
+++ b/Sources/AstrolabeCLI/CommandLine/AstrolabeHostMetadata.swift
@@ -7,5 +7,5 @@
 
 package enum AstrolabeHostMetadata {
     /// Host release version advertised during Runtime negotiation.
-    package static let version = "2.2.0"
+    package static let version = "2.2.1"
 }
diff --git a/docs/protocol-architecture.md b/docs/protocol-architecture.md
index e7a21ed..800e338 100644
--- a/docs/protocol-architecture.md
+++ b/docs/protocol-architecture.md
@@ -121,7 +121,7 @@ The protocol has three independent versions that must not be conflated:
 | --- | --- | --- |
 | Package version | `AstrolabeProtocol 2.0.0`, `astrolabe-protocol-kotlin 2.0.0` | SwiftPM and Maven Central dependencies and releases |
 | Wire Protocol version | `2.0` | Runtime handshake and compatibility decisions |
-| Product version | Host 2.1.0 release snapshot: `astrolabe 2.2.0`, `runtime-ios 2.1.0`, `runtime-android 2.0.1` | Independent Host and platform SDK releases |
+| Product version | Host 2.1.0 release snapshot: `astrolabe 2.2.1`, `runtime-ios 2.1.0`, `runtime-android 2.0.1` | Independent Host and platform SDK releases |
 
 The product-version example is a release snapshot, not a lockstep versioning
 requirement.
diff --git a/mcp-adapter/package-lock.json b/mcp-adapter/package-lock.json
index 993f317..72385f8 100644
--- a/mcp-adapter/package-lock.json
+++ b/mcp-adapter/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@astrolabe/mcp-adapter",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@astrolabe/mcp-adapter",
-      "version": "2.2.0",
+      "version": "2.2.1",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.30.0",
         "zod": "^3.25.76"
diff --git a/mcp-adapter/package.json b/mcp-adapter/package.json
index 022645d..91f5cf3 100644
--- a/mcp-adapter/package.json
+++ b/mcp-adapter/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@astrolabe/mcp-adapter",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/package-lock.json b/package-lock.json
index f22dbf3..7a3bb16 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "astrolabe",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "astrolabe",
-      "version": "2.2.0",
+      "version": "2.2.1",
       "workspaces": [
         "mcp-adapter"
       ],
diff --git a/package.json b/package.json
index f88e8d7..59d3449 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "astrolabe",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "private": true,
   "workspaces": [
     "mcp-adapter"
diff --git a/scripts/smoke-test.mjs b/scripts/smoke-test.mjs
index 131a717..872fd97 100644
--- a/scripts/smoke-test.mjs
+++ b/scripts/smoke-test.mjs
@@ -57,7 +57,8 @@ const expectedMCPToolNames = [
   "find_nodes",
   "inspect_node",
   "check_node",
-  "check_layout"
+  "check_layout",
+  "query_ui_graph"
 ].sort();
 
 let selectedAppId = process.env.ASTROLABE_APP_ID ?? "";