OpenAI keys are made on the API keys page of platform.openai.com, and every key belongs to a project. When you create one you choose its permissions, All, Restricted (where each part of the API can be set to none, read or write) or Read only, and OpenAI's production guide strongly recommends an expiry date on every project key and replacing it on a schedule. Set one. The SDKs read OPENAI_API_KEY and send it as a Bearer header.

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