Connect to OpenRouter using an API key.

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Create or log in to OpenRouter at https://openrouter.ai/ by clicking Sign In. If you have not yet registered, there is a Sign-Up option on that sign-in page. You can use a one-click sign-in using your Google account.
Navigate to https://openrouter.ai/credits, then click Manage Billing to add credits. Important: The remaining credit in your account determines the number of requests you can make per second. For example, 0 credits → 1 req/s (minimum), five credits → 5 req/s, ten credits → 10 req/s, with a maximum of 200 req/s
Navigate to https://openrouter.ai/settings/keys, then click Create Key.
Write a descriptive name and set a credit limit. We recommend starting with a small amount, which you can change later to prevent unexpected usage limits. After that, click Create.
Click copy on the generated key. Important: Keep your API Key private. Please do not share it to avoid unauthorized use.
On the Add-Ons, go to Settings --> API Key Settings. Paste the value, then click Save.

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