diff --git a/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs b/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
index 5a010330981..1f77842c2c5 100644
--- a/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
+++ b/scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs
@@ -157,6 +157,7 @@ function assertExpectedDiagnostics(surfaceMode, errorMessages) {
     "http route registration missing or invalid auth: /kitchen-sink/http-route",
     "plugin must own memory slot or declare contracts.memoryEmbeddingProviders for adapter: kitchen-sink-memory-embedding-provider",
     "plugin must declare contracts.tools for: kitchen-sink-tool",
+    'agent harness "kitchen-sink-agent-harness" registration missing required runtime methods',
     "memory prompt supplement registration missing builder",
   ]);
   if (!INVALID_PROBE_DIAGNOSTIC_SURFACE_MODES.has(surfaceMode)) {
diff --git a/scripts/e2e/npm-onboard-channel-agent-docker.sh b/scripts/e2e/npm-onboard-channel-agent-docker.sh
index 588d6dc99ae..0ac9ffd2fd4 100644
--- a/scripts/e2e/npm-onboard-channel-agent-docker.sh
+++ b/scripts/e2e/npm-onboard-channel-agent-docker.sh
@@ -126,7 +126,7 @@ openclaw onboard --non-interactive --accept-risk \
 node scripts/e2e/lib/npm-onboard-channel-agent/assertions.mjs assert-onboard-state "$HOME"
 node scripts/e2e/lib/npm-onboard-channel-agent/assertions.mjs configure-mock-model "$MOCK_PORT"
 
-openclaw_e2e_assert_dep_absent "$DEP_SENTINEL" "$package_root" "$HOME/.openclaw"
+openclaw_e2e_assert_dep_absent "$DEP_SENTINEL" "$HOME/.openclaw"
 
 echo "Configuring $CHANNEL..."
 openclaw channels add --channel "$CHANNEL" --token "$CHANNEL_TOKEN" >/tmp/openclaw-channel-add.log 2>&1
@@ -134,7 +134,7 @@ node scripts/e2e/lib/npm-onboard-channel-agent/assertions.mjs assert-channel-con
 
 echo "Running doctor after channel activation..."
 openclaw doctor --repair --non-interactive >/tmp/openclaw-doctor.log 2>&1
-openclaw_e2e_assert_dep_absent "$DEP_SENTINEL" "$package_root" "$HOME/.openclaw"
+openclaw_e2e_assert_dep_absent "$DEP_SENTINEL" "$HOME/.openclaw"
 
 echo "Running local agent turn against mocked OpenAI..."
 openclaw agent --local \