tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
streaming — Sending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.
Why it matters
Keeps a long Claude Code session alive across provider limits and gives teams one key with per-developer caps, but only if ANTHROPIC_API_KEY is empty and any cached Anthropic login is cleared first.
