What did we scan?
We used Escape’s in-house API scanner to crawl 5138 public OpenAPI-documented APIs on the internet. It took us 83,245 requests to gather the data.
Total scanned endpoints
Total sent requests
We gathered both OpenAPI 2.0 and OpenAPI 3.0+ specs. We observed that most public APIs rely on OpenAPI 3.0.0 Documentation. OpenAPI 3.0.1 also has some ground.
Number of apps by OpenAPI version
What metadata were included in the documentation?
Between a third and a half of documentations contained metadata such as license, contact info, and terms of services.
% of specs with licence
% of specs with contact
% of specs with TOS
Creative Commons 3.0 and Apache 2.0 are the most common licenses used for API documentations. MIT is used in only ~4% of Public API documentations.