diff --git a/logos/examples/tests/compose_attach_node_control.rs b/logos/examples/tests/compose_attach_node_control.rs
index fa3befd..7b3e5fe 100644
--- a/logos/examples/tests/compose_attach_node_control.rs
+++ b/logos/examples/tests/compose_attach_node_control.rs
@@ -23,7 +23,7 @@ async fn compose_attach_mode_queries_node_api_opt_in() -> Result<()> {
     let attach_source = metadata.attach_source().map_err(|err| anyhow!("{err}"))?;
     let attached = ScenarioBuilder::deployment_with(|d| d.with_node_count(1))
         .with_run_duration(Duration::from_secs(5))
-        .with_attach_source(attach_source)
+        .with_existing_cluster(attach_source)
         .build()?;
 
     let attached_deployer = LbcComposeDeployer::default();
diff --git a/logos/examples/tests/k8s_attach_node_control.rs b/logos/examples/tests/k8s_attach_node_control.rs
index 72b2c9d..f309eee 100644
--- a/logos/examples/tests/k8s_attach_node_control.rs
+++ b/logos/examples/tests/k8s_attach_node_control.rs
@@ -23,7 +23,7 @@ async fn k8s_attach_mode_queries_node_api_opt_in() -> Result<()> {
     let attach_source = metadata.attach_source().map_err(|err| anyhow!("{err}"))?;
     let attached = ScenarioBuilder::deployment_with(|d| d.with_node_count(1))
         .with_run_duration(Duration::from_secs(5))
-        .with_attach_source(attach_source)
+        .with_existing_cluster(attach_source)
         .build()?;
 
     let attached_deployer = LbcK8sDeployer::default();
diff --git a/testing-framework/core/src/scenario/definition.rs b/testing-framework/core/src/scenario/definition.rs
index 15c7ea9..9739141 100644
--- a/testing-framework/core/src/scenario/definition.rs
+++ b/testing-framework/core/src/scenario/definition.rs
@@ -118,8 +118,14 @@ impl<E: Application, Caps> Scenario<E, Caps> {
     }
 
     #[must_use]
+    pub fn existing_cluster(&self) -> Option<&AttachSource> {
+        self.sources.existing_cluster()
+    }
+
+    #[must_use]
+    #[doc(hidden)]
     pub fn attached_source(&self) -> Option<&AttachSource> {
-        self.sources.attached_source()
+        self.existing_cluster()
     }
 
     #[must_use]
@@ -243,8 +249,14 @@ macro_rules! impl_common_builder_methods {
             }
 
             #[must_use]
+            pub fn with_existing_cluster(self, cluster: AttachSource) -> Self {
+                self.map_core_builder(|builder| builder.with_existing_cluster(cluster))
+            }
+
+            #[must_use]
+            #[doc(hidden)]
             pub fn with_attach_source(self, attach: AttachSource) -> Self {
-                self.map_core_builder(|builder| builder.with_attach_source(attach))
+                self.with_existing_cluster(attach)
             }
 
             #[must_use]
@@ -556,11 +568,17 @@ impl<E: Application, Caps> Builder<E, Caps> {
     }
 
     #[must_use]
-    pub fn with_attach_source(mut self, attach: AttachSource) -> Self {
-        self.sources = self.sources.with_attach(attach);
+    pub fn with_existing_cluster(mut self, cluster: AttachSource) -> Self {
+        self.sources = self.sources.with_attach(cluster);
         self
     }
 
+    #[must_use]
+    #[doc(hidden)]
+    pub fn with_attach_source(self, attach: AttachSource) -> Self {
+        self.with_existing_cluster(attach)
+    }
+
     #[must_use]
     pub fn with_external_node(mut self, node: ExternalNodeSource) -> Self {
         self.sources = self.sources.with_external_node(node);
diff --git a/testing-framework/core/src/scenario/sources/model.rs b/testing-framework/core/src/scenario/sources/model.rs
index 5b0ec2c..df444f6 100644
--- a/testing-framework/core/src/scenario/sources/model.rs
+++ b/testing-framework/core/src/scenario/sources/model.rs
@@ -173,7 +173,7 @@ impl ScenarioSources {
     }
 
     #[must_use]
-    pub fn attached_source(&self) -> Option<&AttachSource> {
+    pub fn existing_cluster(&self) -> Option<&AttachSource> {
         match self {
             Self::Attached { attach, .. } => Some(attach),
             Self::Managed { .. } | Self::ExternalOnly { .. } => None,
@@ -199,6 +199,11 @@ impl ScenarioSources {
         matches!(self, Self::Attached { .. })
     }
 
+    #[must_use]
+    pub const fn uses_existing_cluster(&self) -> bool {
+        self.is_attached()
+    }
+
     #[must_use]
     pub const fn is_external_only(&self) -> bool {
         matches!(self, Self::ExternalOnly { .. })
diff --git a/testing-framework/deployers/compose/src/deployer/orchestrator.rs b/testing-framework/deployers/compose/src/deployer/orchestrator.rs
index c4fdc4f..9619e86 100644
--- a/testing-framework/deployers/compose/src/deployer/orchestrator.rs
+++ b/testing-framework/deployers/compose/src/deployer/orchestrator.rs
@@ -71,7 +71,7 @@ impl<E: ComposeDeployEnv> DeploymentOrchestrator<E> {
             }
         })?;
 
-        if scenario.sources().is_attached() {
+        if scenario.sources().uses_existing_cluster() {
             return self
                 .deploy_attached_only::<Caps>(scenario, source_plan)
                 .await
@@ -215,7 +215,7 @@ impl<E: ComposeDeployEnv> DeploymentOrchestrator<E> {
         }
 
         let attach = scenario
-            .attached_source()
+            .existing_cluster()
             .ok_or(ComposeRunnerError::InternalInvariant {
                 message: "attached node control requested outside attached source mode",
             })?;
@@ -243,7 +243,7 @@ impl<E: ComposeDeployEnv> DeploymentOrchestrator<E> {
         Caps: Send + Sync,
     {
         let attach = scenario
-            .attached_source()
+            .existing_cluster()
             .ok_or(ComposeRunnerError::InternalInvariant {
                 message: "compose attached cluster wait requested outside attached source mode",
             })?;
@@ -373,7 +373,7 @@ where
     Caps: Send + Sync,
 {
     let project_name = scenario
-        .attached_source()
+        .existing_cluster()
         .and_then(|attach| attach.compose_project())
         .map(ToOwned::to_owned);
 
diff --git a/testing-framework/deployers/k8s/src/deployer/orchestrator.rs b/testing-framework/deployers/k8s/src/deployer/orchestrator.rs
index ec1cb80..a41e8d5 100644
--- a/testing-framework/deployers/k8s/src/deployer/orchestrator.rs
+++ b/testing-framework/deployers/k8s/src/deployer/orchestrator.rs
@@ -179,7 +179,7 @@ where
 
     let observability = resolve_observability_inputs(scenario.capabilities())?;
 
-    if scenario.sources().is_attached() {
+    if scenario.sources().uses_existing_cluster() {
         let runner = deploy_attached_only::<E, Caps>(scenario, source_plan, observability).await?;
         return Ok((runner, attached_metadata(scenario)));
     }
@@ -250,11 +250,11 @@ where
     Caps: Send + Sync,
 {
     let namespace = scenario
-        .attached_source()
+        .existing_cluster()
         .and_then(|attach| attach.k8s_namespace())
         .map(ToOwned::to_owned);
     let label_selector = scenario
-        .attached_source()
+        .existing_cluster()
         .and_then(|attach| attach.k8s_label_selector())
         .map(ToOwned::to_owned);
 
@@ -273,7 +273,7 @@ where
     Caps: Send + Sync,
 {
     let attach = scenario
-        .attached_source()
+        .existing_cluster()
         .ok_or_else(|| K8sRunnerError::InternalInvariant {
             message: "k8s attached cluster wait requested outside attached source mode".to_owned(),
         })?;