Upon signing up as an Enterprise user, you will automatically have access to our API (v3).
Endpoints
Currently, API v3 allows you to pull data from the Site Explorer, Keywords Explorer and SERP Overview endpoints:
Site Explorer
Overview
Backlinks
Broken backlinks
Referring domains
Best pages by links
Linked domains
Organic keywords
Top pages
Paid pages
Keywords Explorer
Metrics for a single keyword or a list of keywords
Volume history
Volume by country
Matching terms
Related terms
Search suggestions
SERP Overview
Top 100 SERP results
More reports and tools are coming soon.
Eligibility
Ahrefs API is fully available for Enterprise plan. On all other plans you'll also have an option to test the API for free by using ahrefs.com or wordcount.com as your targets. Note you still need to create an API key to run free test queries.
Pricing
All requests and endpoints consume API units (come included into the Enterprise package). The cost depends on the number of rows in the response and the fields requested. The minimum cost for any request is 50 units.
More details can be found at https://docs.ahrefs.com/docs/api/reference/introduction.