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Prices checked Oct 27, 2026
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API key

A secret string that identifies your account when calling a provider's API; whoever holds it can spend your credit.

Keep API keys on your server, never in browser or mobile app code, and set spending limits. Leaked keys are a common and expensive mistake.

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Frequently asked questions

What does API key mean?

A secret string that identifies your account when calling a provider's API; whoever holds it can spend your credit. Keep API keys on your server, never in browser or mobile app code, and set spending limits. Leaked keys are a common and expensive mistake.