diff --git a/src/mod.ts b/src/mod.ts
index ab192e1..2870935 100644
--- a/src/mod.ts
+++ b/src/mod.ts
@@ -2,6 +2,7 @@ export * from "./constants.ts";
 export * from "./context.ts";
 export * from "./db.ts";
 export * from "./network.ts";
+export * from "./oras.ts";
 export * from "./state.ts";
 export * from "./types.ts";
 export * from "./utils.ts";
diff --git a/src/oras.ts b/src/oras.ts
new file mode 100644
index 0000000..2e58784
--- /dev/null
+++ b/src/oras.ts
@@ -0,0 +1,15 @@
+export async function setupOrasBinary(version: string): Promise<void> {
+  const process = new Deno.Command("oras", {
+    args: ["version"],
+    stdout: "piped",
+    stderr: "piped",
+  })
+    .spawn();
+
+  const { code } = await process.output();
+  if (code === 0) {
+    return;
+  }
+
+  console.log(`Downloading ORAS version ${version}...`);
+}
diff --git a/src/subcommands/pull.ts b/src/subcommands/pull.ts
new file mode 100644
index 0000000..084ea01
--- /dev/null
+++ b/src/subcommands/pull.ts
@@ -0,0 +1,2 @@
+export default async function (name: string): Promise<void> {
+}
diff --git a/src/subcommands/push.ts b/src/subcommands/push.ts
new file mode 100644
index 0000000..084ea01
--- /dev/null
+++ b/src/subcommands/push.ts
@@ -0,0 +1,2 @@
+export default async function (name: string): Promise<void> {
+}
diff --git a/src/subcommands/registry/login.ts b/src/subcommands/registry/login.ts
new file mode 100644
index 0000000..87618ab
--- /dev/null
+++ b/src/subcommands/registry/login.ts
@@ -0,0 +1,5 @@
+import { setupOrasBinary } from "../../oras.ts";
+
+export default async function () {
+  await setupOrasBinary(Deno.env.get("ORAS_VERSION") ?? "1.3.0");
+}