cc-gateway

CC Gateway is a TypeScript reverse proxy that routes Claude Code traffic through a local server before it reaches the Anthropic API, intercepting and rewriting the telemetry and fingerprint data that Claude Code collects and transmits. According to the README, Claude Code sends over 640 telemetry event types across three parallel channels and captures more than 40 environment dimensions including device ID, email, OS version, CPU architecture, shell type, and physical RAM. The gateway normalizes all of this to a single canonical profile, replacing the entire `env` object rather than patching individual fields, sanitizing the `<env>` block injected into system prompts, masking process metrics like heap size and RSS, and stripping the `x-anthropic-billing-header` fingerprint hash. That last step also enables cross-session prompt cache sharing, which the project claims reduces system prompt costs by roughly 85 percent. Teams can provision multiple users through per-person launcher scripts generated by an `add-client.sh` script, with no OAuth flow required on client machines. The tool is deployed via Docker or Node.js 22 and targets developers or teams running Claude Code across multiple machines who want to control what hardware and identity data leaves their network.

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