claude-code-mirror

Mirror Claude Code native binaries to GitHub Releases.

Upstream binaries are published at https://downloads.claude.ai/claude-code-releases. This repo runs a scheduled GitHub Action to grab the latest version and republish every platform's binary as a GitHub Release asset, so they're available as direct https://github.com/.../releases/download/... URLs.

Triggered by

• cron: 0 8 * * * UTC — every day at 08:00 UTC
• workflow_dispatch — manual run from the Actions tab

What gets mirrored

All platforms from the upstream manifest are mirrored (automatically picks up any new ones Anthropic adds):

• darwin-arm64
• darwin-x64
• linux-arm64
• linux-x64
• linux-arm64-musl
• linux-x64-musl
• win32-arm64
• win32-x64

Release assets

A release tag matches the upstream version, e.g. upstream 2.1.206 → tag 2.1.206.

Assets in each release:

• claude-<version>-<platform>[.exe] — one per platform (win32 adds .exe)
• manifest.json — upstream manifest as-is
• SHA256SUMS — sha256 of the binary assets, sha256sum -c SHA256SUMS friendly

Verifying a download

# From a release's "Assets" section, download SHA256SUMS + the binary you want.
sha256sum -c SHA256SUMS --ignore-missing

Every binary's checksum is also validated by the workflow against the upstream manifest before upload — a mismatch fails the run and no release is created.

Idempotency

Before downloading, the workflow checks if a <version> release already exists. If it does, the run exits early. So the daily cron is a no-op when upstream hasn't shipped a new version.

Notes

• Upstream (downloads.claude.ai) is geo-restricted to Anthropic's supported countries. GitHub-hosted runners run in Azure regions where the endpoint is reachable.
• The workflow does not install or execute Claude — it only downloads, verifies checksum, and republishes.