diff --git a/scripts/vitest-config.test.ts b/scripts/vitest-config.test.ts
new file mode 100644
index 0000000..9367369
--- /dev/null
+++ b/scripts/vitest-config.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+
+import packageJson from "../package.json";
+import config from "../vitest.config";
+
+describe("coverage runner configuration", () => {
+  it("keeps verification scripts out of coverage accounting", () => {
+    expect(config.test?.coverage?.include).toEqual([
+      "packages/api/src/**/*.ts",
+      "packages/client/src/**/*.ts",
+      "packages/indexer/src/**/*.ts",
+      "scripts/**/*.ts",
+    ]);
+    expect(config.test?.coverage?.exclude).toContain("scripts/verify-*.ts");
+    expect(config.test?.coverage?.excludeAfterRemap).toBe(true);
+  });
+
+  it("drives reporter selection and tempdir creation from the coverage script", () => {
+    expect(config.test?.coverage?.reporter).toBeUndefined();
+    expect(packageJson.scripts["test:coverage"]).toContain("mkdir -p coverage/.tmp");
+    expect(packageJson.scripts["test:coverage"]).toContain("--coverage.reporter=text");
+  });
+});