diff --git a/src/main/hosted-sandbox/orca-cloud-sandbox-id.test.ts b/src/main/hosted-sandbox/orca-cloud-sandbox-id.test.ts
new file mode 100644
index 00000000000..78b329fc44a
--- /dev/null
+++ b/src/main/hosted-sandbox/orca-cloud-sandbox-id.test.ts
@@ -0,0 +1,45 @@
+import { describe, expect, it, vi } from 'vitest'
+
+const runtimes = vi.hoisted(() => ({ list: [] as unknown[] }))
+vi.mock('../../shared/ephemeral-vm-runtime-store', () => ({
+  listEphemeralVmRuntimes: () => runtimes.list
+}))
+vi.mock('../environment-providers/environment-provider-recipe-adapter', () => ({
+  environmentHandleFromRecipeResult: (result: { sandboxId?: string } | undefined) =>
+    result?.sandboxId ? { environmentId: result.sandboxId } : null
+}))
+
+const { orcaCloudSandboxIdFor } = await import('./orca-cloud-sandbox-id')
+
+describe('orcaCloudSandboxIdFor', () => {
+  it('resolves composer-created cloud workspaces whose recipe has no provider (RA-11)', () => {
+    runtimes.list = [
+      {
+        runtimeEnvironmentId: 'env-a',
+        recipe: { id: 'cloud' },
+        recipeResult: { sandboxId: 'sbx_a' }
+      },
+      {
+        runtimeEnvironmentId: 'env-b',
+        recipe: { id: 'cloud', provider: 'orca-cloud' },
+        recipeResult: { sandboxId: 'sbx_b' }
+      }
+    ]
+    expect(orcaCloudSandboxIdFor('/u', 'env-a')).toBe('sbx_a')
+    expect(orcaCloudSandboxIdFor('/u', 'env-b')).toBe('sbx_b')
+  })
+
+  it('never resolves another provider, an unknown runtime, or one without a hosted-sandbox handle', () => {
+    runtimes.list = [
+      {
+        runtimeEnvironmentId: 'env-c',
+        recipe: { provider: 'custom' },
+        recipeResult: { sandboxId: 'x' }
+      },
+      { runtimeEnvironmentId: 'env-d', recipe: { id: 'cloud' }, recipeResult: {} }
+    ]
+    expect(orcaCloudSandboxIdFor('/u', 'env-c')).toBeNull()
+    expect(orcaCloudSandboxIdFor('/u', 'env-d')).toBeNull()
+    expect(orcaCloudSandboxIdFor('/u', 'env-zzz')).toBeNull()
+  })
+})
diff --git a/src/main/hosted-sandbox/orca-cloud-sandbox-id.ts b/src/main/hosted-sandbox/orca-cloud-sandbox-id.ts
index d312c200e1a..17e6e98bfe0 100644
--- a/src/main/hosted-sandbox/orca-cloud-sandbox-id.ts
+++ b/src/main/hosted-sandbox/orca-cloud-sandbox-id.ts
@@ -12,7 +12,9 @@ export function orcaCloudSandboxIdFor(
   const runtime = listEphemeralVmRuntimes(userDataPath).find(
     (record) =>
       record.runtimeEnvironmentId === runtimeEnvironmentId &&
-      record.recipe?.provider === 'orca-cloud'
+      // Composer-created cloud workspaces store the recipe without a provider (like
+      // cloud-desktop-keys); the hosted-sandbox handle below is what proves it is Orca Cloud.
+      (record.recipe?.provider === 'orca-cloud' || record.recipe?.provider === undefined)
   )
   const handle = runtime?.recipeResult
     ? environmentHandleFromRecipeResult(runtime.recipeResult, HOSTED_SANDBOX_DRIVER_ID)