What is "Sign in with GateMux"

For people using a third-party app: what the button authorizes, how you are charged, how to set a cap, and how to revoke at any time.

• Raw markdown of this page: /docs/en/sign-in-with-gatemux.md
• Docs index: /llms.txt

Machine-readable: /llms.txt, /models.md (append .md to any docs URL for raw markdown)