RapidAPI, a San Francisco, CA-based API marketplace for developers to find and connect to thousands of publicly available APIs, raised $25m in Series B financing.

The round, which brought total funding to date to $37.5m, was led by M12 (Microsoft’s Venture Fund), with participation from DNS Capital, and existing investors Andreessen Horowitz and Green Bay Capital. Mony Hassid, General Manager and Managing Director at M12, joined RapidAPI’s board of directors.

The company intends to use the funds to continue scaling its API marketplace.

Led by Iddo Gino, Founder and CEO, RapidAPI is an API marketplace where over a million developers find and connect to thousands of public APIs, as well as share and collaborate on internal APIs.

The public marketplace features over 10,000 APIs used by 1,000,000 developers who process over half a trillion API calls each month.

The APIs available within the marketplace include Microsoft, SendGrid, Nexmo, Telesign, Google, Skyscanner, Crunchbase and many others. RapidAPI also works with large enterprise clients, including Cisco, Hyatt, SAP, Delta, and Reddit.

The company has also expanded its marketplace offering by introducing RapidAPI for Teams, a self-serve platform for developers to publish, share and collaborate on internal APIs and microservices, as well discover, test, enable, and manage the consumption of both internal and external APIs, all in one place.

The company is based in San Francisco, Tel Aviv, and Kiev, where it has a team of 50 people.

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