It creates a personal access token (PAT) based on your API keys from Anthropic, OpenAI or others, then injects policies. It does not store secrets, but instead stores a reference to environment variables storing those values.

Another benefit - if you execute Claude code or Codex using the run command, you can also record session token usage and the prompt traffic. This allows you to store it with your github project as a shared memory.

Run the binary using 'run' for a context that lasts for the command, or use 'start/stop' to initiate the proxy at localhost:8443. There is a web UI you can access to gather stats as well.