Magpie is a cross-platform menu bar app and local proxy that unifies dozens of AI coding agents behind standard wire APIs. It translates between OpenAI, Anthropic, and Gemini formats on localhost while managing quotas across multiple accounts and subscription logins. Instead of editing separate JSON config files for every tool, you pick a model from a list and the gateway handles failover automatically when limits hit.
It is worth installing if you juggle multiple CLI agents and paid accounts, saving you from manually rotating API keys when quotas run out mid-task. The catch is that routing traffic through an extra local proxy adds another moving part to debug when requests fail or tokens do not match up. Skip it if you only use a single official client and standard API keys without hitting limits.
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