BoldSign has rate limits to balance loads on the system. Both API keys and OAuth API calls follow the same rate limit system. In a live or production environment, you can make up to 2000 requests per hour per account. In sandbox mode, you can make up to 50 requests per hour per account.
The rate limits are introduced for the account level, not for the OAuth app or user level.
When the limit is reached, we will return 429 Too many request statuses and messages. You can track your rate limit usage in the API response headers.