API keys
API keys are the secret tokens your program sends with each Market Data API request to prove which account it belongs to.
An API call that needs an account cannot use your website password, which has no place in a script. Instead you create a key here: a long random token that your program sends as a bearer token with each request. The key identifies your account, and each key has its own rate limit. A key that has leaked or that you no longer need is revoked here, which stops it working immediately without changing anything else about your account. How many requests your keys have made is on API usage.
Related pages
| Market Data API | The Market Data API is the set of calls. A key is what ties your program's calls to your account. |
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| API usage | API usage counts the requests these keys have made. The keys themselves are created and revoked here. |