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The Everhour API enforces rate limits to ensure stability for all users.

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Current limits

The limit is approximately 20 requests per 10 seconds per API key. This value may vary with server load and is subject to change.

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Exceeded limit response

When you exceed the rate limit, the API returns: 
HTTP/1.1 429 Too Many Requests
Retry-After: 5
The Retry-After header specifies how many seconds to wait before retrying.

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Handling 429 responses

Implement exponential backoff in your integration: 
for attempt in 1 2 3 4 5; do
  response=$(curl -s -w "\n%{http_code}" https://api.everhour.com/projects \
    -H "X-Api-Key: YOUR_API_KEY")
  status=$(echo "$response" | tail -1)
  if [ "$status" != "429" ]; then break; fi
  sleep $(( 2 ** attempt ))
done

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Batch operations

If your use case requires a large volume of requests — such as a one-time data migration or bulk export — contact us before running it. We may be able to provide a more efficient data access method. Reach us via chat inside your Everhour account or at ask@everhour.com.