The HR and information services group Recruit is dipping it's toes in the API business.
Last Month, the group's Media Technology Lab (formerly Tatami Lab) release a suite of B2B web services to allow third parties to leverage the content of some of the group's online content.
Search APIs have been made available for the following sites:
Akasugu.net - baby and maternity products online store Shingakunet.com - teritary education portal AB-ROAD - travel portal Hot Pepper Beauty - beauty salon directory
The APIs are search only at the moment, hence the toe-dipping comment above. Please let me know if you see any implementations of the APIs.