Historical Data and Request Rate Limits

As of October 2024, the Open Data Hub API enforces the following quota limits for accessing historical data:

User Type	Costs	Max period of historical data	Requests per Second	Rate Limiting Criteria
Unregistered without Referrer Information	free of charge	5 days	10 requests per second	per IP and query path
Unregistered with Referrer Information	free of charge	100 days	20 requests per second	per referer, IP, and query path
Basic Data Access	free of charge	1,000 days	50 requests per second	per user-id, referer, IP, and query path
Advanced Data Access	for a fee	unlimited	100 requests per second	per user-id, referer, IP, and query path
Premium Data Access	for a fee	unlimited	200 requests per second	per user-id, referer, IP, and query path

More information:

• Pricing section on Data Access Service page: https://opendatahub.com/services/data-access/#pricing
• Http Referer: https://github.com/noi-techpark/odh-docs/wiki/Http-Referer

API Quota Exhaustion and Error Code 429 Handling

You might have seen error code 429 with the following error response:

{
  "hint": "https://github.com/noi-techpark/odh-docs/wiki/Api-Quota",
  "message": "You have exhausted your API Request Quota",
  "policy": "[see below]"
}

This is because you used all your calls that you were allowed to use.