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This section introduces the Bigcapital API, including authentication, response codes, and rate limits.

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Base URL

The Bigcapital API is built on REST principles. We enforce HTTPS in every request to improve data security, integrity, and privacy. The API does not support HTTP. All requests contain the following base URL:

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Authentication

To authenticate, add an Authorization header with the contents of the header being Bearer bc_xxxxxxxxx where bc_xxxxxxxxx is your API Key.

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Response codes

Bigcapital uses standard HTTP codes to indicate the success or failure of your requests.

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Rate limit

The default maximum rate limit is 2 requests per second. This number can be increased for trusted senders by request. After that, you’ll hit the rate limit and receive a 429 response error code.