diff --git a/test/e2e/minimum-package-age-request-block.e2e.spec.js b/test/e2e/minimum-package-age-request-block.e2e.spec.js
new file mode 100644
index 0000000..5dd147c
--- /dev/null
+++ b/test/e2e/minimum-package-age-request-block.e2e.spec.js
@@ -0,0 +1,161 @@
+import { describe, it, before, beforeEach, afterEach } from "node:test";
+import { DockerTestContainer } from "./DockerTestContainer.js";
+import assert from "node:assert";
+
+describe.skip(
+  "E2E: minimum package age direct request fallback",
+  () => {
+    let container;
+
+    before(async () => {
+      DockerTestContainer.buildImage();
+    });
+
+    beforeEach(async () => {
+      container = new DockerTestContainer();
+      await container.start();
+
+      const installationShell = await container.openShell("zsh");
+      await installationShell.runCommand("safe-chain setup-ci");
+      await installationShell.runCommand(
+        "echo 'export PATH=\"$HOME/.safe-chain/shims:$PATH\"' >> ~/.zshrc"
+      );
+    });
+
+    afterEach(async () => {
+      if (container) {
+        await container.stop();
+        container = null;
+      }
+    });
+
+    it("blocks npm ci when a lockfile resolves to a recently released package", async () => {
+      const shell = await container.openShell("zsh");
+
+      await shell.runCommand(
+        "npm init -y && npm pkg set dependencies.axios=1.8.4"
+      );
+      await shell.runCommand("npm install --package-lock-only");
+      await shell.runCommand("rm -rf node_modules");
+      await seedNewPackagesListCache(shell, [
+        {
+          package_name: "axios",
+          version: "1.8.4",
+          released_on: unixHoursAgo(1),
+          scraped_on: unixHoursAgo(1),
+        },
+      ]);
+
+      const result = await shell.runCommand(
+        "npm ci --safe-chain-minimum-package-age-hours=168 --safe-chain-logging=verbose"
+      );
+
+      assert.ok(
+        result.output.includes(
+          "blocked 1 direct package download request(s) due to minimum package age"
+        ),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+      assert.ok(
+        result.output.includes("- axios@1.8.4"),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+      assert.ok(
+        result.output.includes(
+          "Exiting without installing packages blocked by the direct download minimum package age check."
+        ),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+    });
+
+    it("blocks yarn frozen-lockfile installs when the cached recent releases list marks the tarball as too young", async () => {
+      const shell = await container.openShell("zsh");
+
+      await shell.runCommand(
+        "npm init -y && npm pkg set dependencies.axios=1.8.4"
+      );
+      await shell.runCommand("yarn install");
+      await shell.runCommand("rm -rf node_modules");
+      await seedNewPackagesListCache(shell, [
+        {
+          package_name: "axios",
+          version: "1.8.4",
+          released_on: unixHoursAgo(1),
+          scraped_on: unixHoursAgo(1),
+        },
+      ]);
+
+      const result = await shell.runCommand(
+        "yarn install --frozen-lockfile --safe-chain-minimum-package-age-hours=168 --safe-chain-logging=verbose"
+      );
+
+      assert.ok(
+        result.output.includes(
+          "blocked 1 direct package download request(s) due to minimum package age"
+        ),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+      assert.ok(
+        result.output.includes("- axios@1.8.4"),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+    });
+
+    it("allows the same lockfile-driven install when minimum age checks are skipped", async () => {
+      const shell = await container.openShell("zsh");
+
+      await shell.runCommand(
+        "npm init -y && npm pkg set dependencies.axios=1.8.4"
+      );
+      await shell.runCommand("npm install --package-lock-only");
+      await shell.runCommand("rm -rf node_modules");
+      await seedNewPackagesListCache(shell, [
+        {
+          package_name: "axios",
+          version: "1.8.4",
+          released_on: unixHoursAgo(1),
+          scraped_on: unixHoursAgo(1),
+        },
+      ]);
+
+      const result = await shell.runCommand(
+        "npm ci --safe-chain-minimum-package-age-hours=168 --safe-chain-skip-minimum-package-age --safe-chain-logging=verbose"
+      );
+
+      assert.ok(
+        result.output.includes("no malware found."),
+        `Output did not include expected text. Output was:\n${result.output}`
+      );
+      assert.ok(
+        !result.output.includes(
+          "direct package download request(s) due to minimum package age"
+        ),
+        `Output unexpectedly contained a direct request block. Output was:\n${result.output}`
+      );
+    });
+  }
+);
+
+/**
+ * @param {{ runCommand: (command: string) => Promise<{output: string}> }} shell
+ * @param {Array<{package_name: string, version: string, released_on: number, scraped_on: number}>} entries
+ */
+async function seedNewPackagesListCache(shell, entries) {
+  const payload = JSON.stringify(entries).replace(/"/g, '\\"');
+
+  await shell.runCommand("mkdir -p ~/.safe-chain");
+  await shell.runCommand(
+    `printf "%s" "${payload}" > ~/.safe-chain/newPackagesList_js.json`
+  );
+  await shell.runCommand(
+    'printf "%s" "test-etag" > ~/.safe-chain/newPackagesList_version_js.txt'
+  );
+}
+
+/**
+ * @param {number} hours
+ * @returns {number}
+ */
+function unixHoursAgo(hours) {
+  return Math.floor((Date.now() - hours * 3600 * 1000) / 1000);
+}