diff --git a/codex-cli/scripts/build_npm_package.py b/codex-cli/scripts/build_npm_package.py
index eda6c26152..c9c77cba05 100755
--- a/codex-cli/scripts/build_npm_package.py
+++ b/codex-cli/scripts/build_npm_package.py
@@ -2,6 +2,7 @@
 """Stage and optionally package the @openai/codex npm module."""
 
 import argparse
+import importlib.util
 import json
 import shutil
 import subprocess
@@ -15,76 +16,18 @@ REPO_ROOT = CODEX_CLI_ROOT.parent
 RESPONSES_API_PROXY_NPM_ROOT = REPO_ROOT / "codex-rs" / "responses-api-proxy" / "npm"
 CODEX_SDK_ROOT = REPO_ROOT / "sdk" / "typescript"
 CODEX_NPM_NAME = "@openai/codex"
+PACKAGE_METADATA = SCRIPT_DIR / "package_metadata.py"
 
-# `npm_name` is the local optional-dependency alias consumed by `bin/codex.js`.
-# The underlying package published to npm is always `@openai/codex`.
-CODEX_PLATFORM_PACKAGES: dict[str, dict[str, str]] = {
-    "codex-linux-x64": {
-        "npm_name": "@openai/codex-linux-x64",
-        "npm_tag": "linux-x64",
-        "target_triple": "x86_64-unknown-linux-musl",
-        "os": "linux",
-        "cpu": "x64",
-    },
-    "codex-linux-arm64": {
-        "npm_name": "@openai/codex-linux-arm64",
-        "npm_tag": "linux-arm64",
-        "target_triple": "aarch64-unknown-linux-musl",
-        "os": "linux",
-        "cpu": "arm64",
-    },
-    "codex-darwin-x64": {
-        "npm_name": "@openai/codex-darwin-x64",
-        "npm_tag": "darwin-x64",
-        "target_triple": "x86_64-apple-darwin",
-        "os": "darwin",
-        "cpu": "x64",
-    },
-    "codex-darwin-arm64": {
-        "npm_name": "@openai/codex-darwin-arm64",
-        "npm_tag": "darwin-arm64",
-        "target_triple": "aarch64-apple-darwin",
-        "os": "darwin",
-        "cpu": "arm64",
-    },
-    "codex-win32-x64": {
-        "npm_name": "@openai/codex-win32-x64",
-        "npm_tag": "win32-x64",
-        "target_triple": "x86_64-pc-windows-msvc",
-        "os": "win32",
-        "cpu": "x64",
-    },
-    "codex-win32-arm64": {
-        "npm_name": "@openai/codex-win32-arm64",
-        "npm_tag": "win32-arm64",
-        "target_triple": "aarch64-pc-windows-msvc",
-        "os": "win32",
-        "cpu": "arm64",
-    },
-}
-
-PACKAGE_EXPANSIONS: dict[str, list[str]] = {
-    "codex": ["codex", *CODEX_PLATFORM_PACKAGES],
-}
-
-PACKAGE_NATIVE_COMPONENTS: dict[str, list[str]] = {
-    "codex": [],
-    "codex-linux-x64": ["codex", "rg"],
-    "codex-linux-arm64": ["codex", "rg"],
-    "codex-darwin-x64": ["codex", "rg"],
-    "codex-darwin-arm64": ["codex", "rg"],
-    "codex-win32-x64": ["codex", "rg", "codex-windows-sandbox-setup", "codex-command-runner"],
-    "codex-win32-arm64": ["codex", "rg", "codex-windows-sandbox-setup", "codex-command-runner"],
-    "codex-responses-api-proxy": ["codex-responses-api-proxy"],
-    "codex-sdk": [],
-}
-
-PACKAGE_TARGET_FILTERS: dict[str, str] = {
-    package_name: package_config["target_triple"]
-    for package_name, package_config in CODEX_PLATFORM_PACKAGES.items()
-}
-
-PACKAGE_CHOICES = tuple(PACKAGE_NATIVE_COMPONENTS)
+_SPEC = importlib.util.spec_from_file_location("codex_package_metadata", PACKAGE_METADATA)
+if _SPEC is None or _SPEC.loader is None:
+    raise RuntimeError(f"Unable to load module from {PACKAGE_METADATA}")
+_METADATA_MODULE = importlib.util.module_from_spec(_SPEC)
+_SPEC.loader.exec_module(_METADATA_MODULE)
+CODEX_PLATFORM_PACKAGES = getattr(_METADATA_MODULE, "CODEX_PLATFORM_PACKAGES", {})
+PACKAGE_CHOICES = getattr(_METADATA_MODULE, "PACKAGE_CHOICES", ())
+PACKAGE_EXPANSIONS = getattr(_METADATA_MODULE, "PACKAGE_EXPANSIONS", {})
+PACKAGE_NATIVE_COMPONENTS = getattr(_METADATA_MODULE, "PACKAGE_NATIVE_COMPONENTS", {})
+PACKAGE_TARGET_FILTERS = getattr(_METADATA_MODULE, "PACKAGE_TARGET_FILTERS", {})
 
 COMPONENT_DEST_DIR: dict[str, str] = {
     "codex": "codex",
diff --git a/codex-cli/scripts/package_metadata.py b/codex-cli/scripts/package_metadata.py
new file mode 100644
index 0000000000..8ac98acfb4
--- /dev/null
+++ b/codex-cli/scripts/package_metadata.py
@@ -0,0 +1,71 @@
+"""Shared package metadata for Codex release packaging scripts."""
+
+# `npm_name` is the local optional-dependency alias consumed by `bin/codex.js`.
+# The underlying package published to npm is always `@openai/codex`.
+CODEX_PLATFORM_PACKAGES: dict[str, dict[str, str]] = {
+    "codex-linux-x64": {
+        "npm_name": "@openai/codex-linux-x64",
+        "npm_tag": "linux-x64",
+        "target_triple": "x86_64-unknown-linux-musl",
+        "os": "linux",
+        "cpu": "x64",
+    },
+    "codex-linux-arm64": {
+        "npm_name": "@openai/codex-linux-arm64",
+        "npm_tag": "linux-arm64",
+        "target_triple": "aarch64-unknown-linux-musl",
+        "os": "linux",
+        "cpu": "arm64",
+    },
+    "codex-darwin-x64": {
+        "npm_name": "@openai/codex-darwin-x64",
+        "npm_tag": "darwin-x64",
+        "target_triple": "x86_64-apple-darwin",
+        "os": "darwin",
+        "cpu": "x64",
+    },
+    "codex-darwin-arm64": {
+        "npm_name": "@openai/codex-darwin-arm64",
+        "npm_tag": "darwin-arm64",
+        "target_triple": "aarch64-apple-darwin",
+        "os": "darwin",
+        "cpu": "arm64",
+    },
+    "codex-win32-x64": {
+        "npm_name": "@openai/codex-win32-x64",
+        "npm_tag": "win32-x64",
+        "target_triple": "x86_64-pc-windows-msvc",
+        "os": "win32",
+        "cpu": "x64",
+    },
+    "codex-win32-arm64": {
+        "npm_name": "@openai/codex-win32-arm64",
+        "npm_tag": "win32-arm64",
+        "target_triple": "aarch64-pc-windows-msvc",
+        "os": "win32",
+        "cpu": "arm64",
+    },
+}
+
+PACKAGE_EXPANSIONS: dict[str, list[str]] = {
+    "codex": ["codex", *CODEX_PLATFORM_PACKAGES],
+}
+
+PACKAGE_NATIVE_COMPONENTS: dict[str, list[str]] = {
+    "codex": [],
+    "codex-linux-x64": ["codex", "rg"],
+    "codex-linux-arm64": ["codex", "rg"],
+    "codex-darwin-x64": ["codex", "rg"],
+    "codex-darwin-arm64": ["codex", "rg"],
+    "codex-win32-x64": ["codex", "rg", "codex-windows-sandbox-setup", "codex-command-runner"],
+    "codex-win32-arm64": ["codex", "rg", "codex-windows-sandbox-setup", "codex-command-runner"],
+    "codex-responses-api-proxy": ["codex-responses-api-proxy"],
+    "codex-sdk": [],
+}
+
+PACKAGE_TARGET_FILTERS: dict[str, str] = {
+    package_name: package_config["target_triple"]
+    for package_name, package_config in CODEX_PLATFORM_PACKAGES.items()
+}
+
+PACKAGE_CHOICES = tuple(PACKAGE_NATIVE_COMPONENTS)
diff --git a/scripts/stage_npm_packages.py b/scripts/stage_npm_packages.py
index 3f75efc3ab..9109608e63 100755
--- a/scripts/stage_npm_packages.py
+++ b/scripts/stage_npm_packages.py
@@ -16,12 +16,13 @@ from pathlib import Path
 REPO_ROOT = Path(__file__).resolve().parent.parent
 BUILD_SCRIPT = REPO_ROOT / "codex-cli" / "scripts" / "build_npm_package.py"
 INSTALL_NATIVE_DEPS = REPO_ROOT / "codex-cli" / "scripts" / "install_native_deps.py"
+PACKAGE_METADATA = REPO_ROOT / "codex-cli" / "scripts" / "package_metadata.py"
 WORKFLOW_NAME = ".github/workflows/rust-release.yml"
 GITHUB_REPO = "openai/codex"
 
-_SPEC = importlib.util.spec_from_file_location("codex_build_npm_package", BUILD_SCRIPT)
+_SPEC = importlib.util.spec_from_file_location("codex_package_metadata", PACKAGE_METADATA)
 if _SPEC is None or _SPEC.loader is None:
-    raise RuntimeError(f"Unable to load module from {BUILD_SCRIPT}")
+    raise RuntimeError(f"Unable to load module from {PACKAGE_METADATA}")
 _BUILD_MODULE = importlib.util.module_from_spec(_SPEC)
 _SPEC.loader.exec_module(_BUILD_MODULE)
 PACKAGE_NATIVE_COMPONENTS = getattr(_BUILD_MODULE, "PACKAGE_NATIVE_COMPONENTS", {})
diff --git a/scripts/stage_standalone_installer_archives.py b/scripts/stage_standalone_installer_archives.py
index e4d3cbc6c9..c98a611e22 100755
--- a/scripts/stage_standalone_installer_archives.py
+++ b/scripts/stage_standalone_installer_archives.py
@@ -15,13 +15,13 @@ from pathlib import Path
 
 
 REPO_ROOT = Path(__file__).resolve().parent.parent
-BUILD_SCRIPT = REPO_ROOT / "codex-cli" / "scripts" / "build_npm_package.py"
 INSTALL_NATIVE_DEPS = REPO_ROOT / "codex-cli" / "scripts" / "install_native_deps.py"
+PACKAGE_METADATA = REPO_ROOT / "codex-cli" / "scripts" / "package_metadata.py"
 WORKFLOW_NAME = ".github/workflows/rust-release.yml"
 
-_SPEC = importlib.util.spec_from_file_location("codex_build_npm_package", BUILD_SCRIPT)
+_SPEC = importlib.util.spec_from_file_location("codex_package_metadata", PACKAGE_METADATA)
 if _SPEC is None or _SPEC.loader is None:
-    raise RuntimeError(f"Unable to load module from {BUILD_SCRIPT}")
+    raise RuntimeError(f"Unable to load module from {PACKAGE_METADATA}")
 _BUILD_MODULE = importlib.util.module_from_spec(_SPEC)
 _SPEC.loader.exec_module(_BUILD_MODULE)
 CODEX_PLATFORM_PACKAGES = getattr(_BUILD_MODULE, "CODEX_PLATFORM_PACKAGES", {})