diff --git a/scripts/tests/test-shell-packages.ps1 b/scripts/tests/test-shell-packages.ps1
index 0e5c9e2..e96b6ad 100644
--- a/scripts/tests/test-shell-packages.ps1
+++ b/scripts/tests/test-shell-packages.ps1
@@ -55,6 +55,7 @@ foreach ($shell in @('powershell','bash')) {
         }
         $docFile = if ($client -eq 'codex') { 'AGENTS.md' } else { 'CLAUDE.md' }
         $docContent = Get-Content -LiteralPath (Join-Path $package $docFile) -Raw
+        if ($docContent -notmatch [regex]::Escape('Use MCP services only through the `mcporter` CLI.')) { throw "$package must require MCPorter for MCP services" }
         if (([regex]::Matches($docContent, [regex]::Escape('Apply instructions in this order'))).Count -ne 1) { throw "$client-$shell must embed the priority rule exactly once" }
         if ($client -eq 'codex' -and $docContent -match 'Always load and apply `rules/general\.md`') { throw "$package must not still instruct loading general.md by path" }
         if ($client -eq 'claude' -and (Test-Path (Join-Path $package 'rules/general.md'))) { throw 'Claude must not automatically load a second copy of general rules.' }
diff --git a/scripts/tests/test-shell-packages.sh b/scripts/tests/test-shell-packages.sh
index b02edb8..e62c9ca 100644
--- a/scripts/tests/test-shell-packages.sh
+++ b/scripts/tests/test-shell-packages.sh
@@ -75,6 +75,7 @@ for shell in powershell bash; do
     doc_file=AGENTS.md
     [ "$client" != claude ] || doc_file=CLAUDE.md
     doc_content=$(cat "$package/$doc_file")
+    printf '%s' "$doc_content" | grep -Fq 'Use MCP services only through the `mcporter` CLI.'
     occurrences=$(printf '%s' "$doc_content" | grep -o 'Apply instructions in this order' | wc -l)
     [ "$occurrences" -eq 1 ] || { printf '%s-%s must embed the priority rule exactly once\n' "$client" "$shell" >&2; exit 1; }
     if [ "$client" = codex ] && printf '%s' "$doc_content" | grep -q 'Always load and apply `rules/general\.md`'; then