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What it does

`clauden` is a tiny, single-binary proxy that sits between Claude Code (or any Anthropic-compatible client) and `api.anthropic.com`. You log in to multiple Claude **subscription** accounts via OAuth; the proxy forwards requests using the active account's token and **transparently switches accounts** the moment one returns a rate-limit (`429`), credit (`402`), or overloaded (`529`) error.

• OAuth subscriptions — stacks your Claude Max/Pro logins (no per-token API billing)
• Automatic rotation — cools down a limited account and retries on the next, mid-request
• Proactive quota awareness — reads Anthropic's anthropic-ratelimit-unified-* headers and switches away from an account at ≥95% utilization before it 429s
• Load-balancing strategies — round-robin, least-used, or session-sticky (pins a conversation to one account to preserve Anthropic's prompt cache → cheaper + faster)
• Auto token refresh — refreshes OAuth tokens ~5 min before expiry
• True streaming — SSE responses pipe straight through
• Single static binary — no Node, no runtime, ~3.5 MB, ~10 MB RAM

  Claude Code ──▶ clauden (:3131) ──▶ api.anthropic.com
                     │ picks active account, injects Bearer token
                     │ on 429/402/529 → cooldown + rotate + retry
                     ▼
              ~/.claudeN/config.json   (accounts + state)

Install

**Requires [Rust](https://rustup.rs) (1.86+).**

One-liner (recommended)

cargo install --git https://github.com/skishore23/clauden

This builds and installs the `clauden` binary into `~/.cargo/bin` (already on your PATH if you used rustup).

Install script

curl -fsSL https:/