Octopool is a production-grade GitHub API relay and caching proxy, deployed as a Cloudflare Worker with a companion Go CLI. It pools multiple GitHub identities (PATs, GitHub App installations) to share API quota, caches responses in D1 and edge cache, and applies string-rewrite policies to protect sensitive data. The CLI acts as a drop-in `gh` shim, routing eligible read commands through the relay before falling back to native `gh`. The system also supports token-free transports (public web pages, raw content, Git smart HTTP) to minimize API consumption. Architecture includes Durable Objects for coordination (pool identity selection, cache-fill ownership, policy revisioning), D1 for persistent cache and audit, and edge cache for low-latency reads. The codebase is dual-language (TypeScript for Worker, Go for CLI) with extensive unit and e2e tests, CI/CD, and a dashboard for monitoring.