You can access the documentation for the public REST API here, or directly from your base: 

API FAQs

What can I do with the Airtable API? 

The Airtable API supports four main actions: 

• Retrieve records from your Airtable base
• Create new records
• Update existing records
• Delete records 

How do I get started?

Make sure you've generated an API key for your account, and then you're all set! The documentation is base-specific, so you will see example requests (specific to your own base and tables!) that you can copy, as well as example responses so you know what to expect in a response.

Is there a rate limit? 

Yes, the public API has a rate limit of 5 requests per second, per base. This limit is the same across all pricing tiers and increased rate limits are not currently available. For more information, see the "Rate Limits" section of the API documentation.