Authentication

API Key

All endpoints require an API key. You can get a free API key by creating a free ClosingBell account, and generating one here. The free API key is rate limited at 100 requests per month. If you need more requests to test the data, contact us to temporarily increase your limit.

The API key can be sent in as a query parameter or an authorization header.

Query parameter: api_key=<api_key>

Authorization header: Authorization: Bearer <api_key>

Rate Limits

All endpoints are rate limited to 60 requests per minute. Monthly requests depend on the license.

License	Monthly Requests
Free	100
Individual	100,000
Commercial	500,000
Institutional	Unlimited