diff --git a/foundations/meshstack-trial/platforms/ske/starterkit/e2e/terragrunt.hcl b/foundations/meshstack-trial/platforms/ske/starterkit/e2e/terragrunt.hcl
new file mode 100644
index 0000000..c860714
--- /dev/null
+++ b/foundations/meshstack-trial/platforms/ske/starterkit/e2e/terragrunt.hcl
@@ -0,0 +1,46 @@
+dependency "deployment" {
+  config_path = "../"
+}
+
+# Hub coordinates: single source of truth in the sibling deployment's hub.hcl.
+include "hub" {
+  path   = "../hub.hcl"
+  expose = true
+}
+
+terraform {
+  source = "git::https://github.com/meshcloud/meshstack-hub.git//modules/${include.hub.locals.module}/e2e?ref=${include.hub.locals.git_ref}"
+}
+
+generate "provider" {
+  path      = "provider.tf"
+  if_exists = "overwrite"
+  contents  = <<EOF
+provider "meshstack" {
+  endpoint  = "https://api.try.meshstack.io"
+  apikey    = "${get_env("MESHSTACK_STARTER_KIT_API_KEY_ID")}"
+  apisecret = "${get_env("MESHSTACK_STARTER_KIT_API_KEY_SECRET")}"
+}
+EOF
+}
+
+# `tofu test` does not type-decode complex TF_VAR_* env vars — use auto.tfvars.json so the
+# structured `test_context` variable arrives correctly typed in test assertion scope.
+#
+# Foundation mode: the deployment (`../`) already created the BBD, so we set `bbd_version_ref` to
+# order an ephemeral building block against it. That also means none of the build-from-source
+# fixtures (forgejo, DNS zone) or backplane secrets are passed — the e2e module builds no backplane
+# here. See the meshstack-hub `e2e-test` skill for the invocation protocol.
+generate "smoke_tfvars" {
+  path              = "smoke.auto.tfvars.json"
+  if_exists         = "overwrite"
+  disable_signature = true
+  contents = jsonencode({
+    test_context = {
+      workspace       = dependency.deployment.outputs.e2e.owning_workspace
+      name_suffix     = run_cmd("--terragrunt-quiet", "date", "-u", "+%Y%m%d%H%M%S")
+      hub_git_ref     = dependency.deployment.outputs.e2e.hub.git_ref
+      bbd_version_ref = { uuid = dependency.deployment.outputs.e2e.building_block_definition.version_ref.uuid }
+    }
+  })
+}
diff --git a/foundations/meshstack-trial/platforms/ske/starterkit/hub.hcl b/foundations/meshstack-trial/platforms/ske/starterkit/hub.hcl
new file mode 100644
index 0000000..ef6a8c6
--- /dev/null
+++ b/foundations/meshstack-trial/platforms/ske/starterkit/hub.hcl
@@ -0,0 +1,12 @@
+# Hub building-block coordinates — single source of truth for both the deployment
+# (terragrunt.hcl) and the e2e smoke test (e2e/terragrunt.hcl).
+#
+# `module` is only consumed by e2e/: the deployment composes three hub modules (the starter kit and
+# the two definitions it creates child building blocks from), so it names their paths itself.
+locals {
+  module  = "ske/ske-starterkit"
+  git_ref = "2baf183189d4207ccbd22ff5d5b5334a7cbcc8fa"
+
+  # Released, not draft — the e2e test orders against `version_latest_release`.
+  bbd_draft = false
+}
diff --git a/foundations/meshstack-trial/platforms/ske/starterkit/outputs.tf b/foundations/meshstack-trial/platforms/ske/starterkit/outputs.tf
new file mode 100644
index 0000000..b19f3ef
--- /dev/null
+++ b/foundations/meshstack-trial/platforms/ske/starterkit/outputs.tf
@@ -0,0 +1,8 @@
+# Consumed by e2e/ to order an ephemeral building block against the deployed definition.
+output "e2e" {
+  value = {
+    hub                       = var.hub
+    building_block_definition = module.starterkit.building_block_definition
+    owning_workspace          = var.meshstack.owning_workspace_identifier
+  }
+}
diff --git a/foundations/meshstack-trial/platforms/ske/starterkit/terragrunt.hcl b/foundations/meshstack-trial/platforms/ske/starterkit/terragrunt.hcl
index 0b660d2..2b3b510 100644
--- a/foundations/meshstack-trial/platforms/ske/starterkit/terragrunt.hcl
+++ b/foundations/meshstack-trial/platforms/ske/starterkit/terragrunt.hcl
@@ -22,11 +22,10 @@ dependency "dns" {
   config_path = "../dns"
 }
 
-locals {
-  hub = {
-    git_ref   = "b7ac0aa9818db730958f64e7ba0fdeecedcfbd4e"
-    bbd_draft = false
-  }
+# Hub coordinates live in hub.hcl (single source of truth, shared with e2e/).
+include "hub" {
+  path   = "./hub.hcl"
+  expose = true
 }
 
 generate "provider" {
@@ -48,7 +47,10 @@ EOF
 
 inputs = {
   meshstack = dependency.meshstack.outputs
-  hub       = local.hub
+  hub = {
+    git_ref   = include.hub.locals.git_ref
+    bbd_draft = include.hub.locals.bbd_draft
+  }
 
   platform_ref      = dependency.platform.outputs.platform_ref
   landing_zone_refs = dependency.platform.outputs.landing_zone_refs