Use the staging helper in the repo root to generate npm tarballs for a release. For example, to stage the CLI, responses proxy, and SDK packages for version 0.6.0:

./scripts/stage_npm_packages.py \
  --release-version 0.6.0 \
  --package codex \
  --package codex-responses-api-proxy \
  --package codex-sdk

This downloads the native artifacts once, hydrates vendor/ for each package, and writes tarballs to dist/npm/.

When --package codex is provided, the staging helper builds the lightweight @openai/codex meta package plus all platform-native @openai/codex variants that are later published under platform-specific dist-tags.

If you need to invoke build_npm_package.py directly, run codex-cli/scripts/install_native_deps.py first and pass --vendor-src pointing to the directory that contains the populated vendor/ tree.