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API calls will be rate-limited to 250 requests per minute using a sliding window, and will be totalled per user, per application across calls to any of the OPLOG.ONE APIs. Please give us time to process your requests. If you’re sending too many requests too quickly, we’ll respond with a 429 error code (TooManyRequests).

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Rate Limit Headers

The API response headers also give you the following rate limit detailed information:
HeaderExampleDescription
x-retry-after25Rate limit is exceeded. Try again in 25 seconds.
x-remaining-calls0You have 0 remaining calls.

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Rate Limit Response

When you exceed the rate limit, you’ll receive a 429 status code with the following response: 
{
    "statusCode": 429,
    "message": "Rate limit is exceeded. Try again in 25 seconds."
}

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Best Practices

Monitor Headers

Always check the x-remaining-calls header to monitor your usage

Implement Retry Logic

Use the x-retry-after header to implement proper retry delays

Batch Requests

Combine multiple operations into single requests when possible

Cache Responses

Cache frequently accessed data to reduce API calls