Fern (YC W23) is a software development company that enables businesses to generate idiomatic SDKs and visually appealing API documentation from their OpenAPI specifications. Fern streamlines the process of delivering high-quality developer tools by transforming API definitions into ready-to-use SDKs in multiple programming languages and producing modern, user-friendly API docs.
How does Fern (YC W23) work?
Fern operates by allowing companies to input their OpenAPI specifications, which are then automatically converted into SDKs tailored to specific programming languages. Additionally, Fern generates comprehensive and visually attractive API documentation, reducing operational overhead for engineering teams and improving the developer experience for end users.
Who uses Fern (YC W23)?
Fern primarily serves technology-driven organizations and developer-focused companies that rely on APIs for internal or external use. Notable customers include Square, Webflow, Intercom, Pinecone, Cohere, Launch Darkly, Eleven Labs, Alchemy, Merge, Workato, Assembly AI, Hume, Instabase, Candid Health, Flatfile, Cartesia, VAPI, Nominal, Chainalysis, Beehiv, and Deepgram. These organizations leverage Fern to accelerate their API adoption and improve documentation quality.
What sets Fern (YC W23) apart?
Fern distinguishes itself by focusing on generating idiomatic SDKs—meaning the output code feels natural to developers in each target language—and combining this with modern, attractive API documentation. This dual approach simplifies the integration process for customers’ end users and helps businesses maintain consistency and professionalism in their API offerings.
Who founded Fern (YC W23)?
Fern was founded by a team with deep experience in developer tools, engineering, and developer relations. Key members include Jon Fellman (Head of Engineering, Developer Platform), Gil Feig (CTO), Matt Makai (VP of Developer Experience), Kabir Goel (Founding Engineer), and Steve Yazicioglu (Head of Engineering), among others. Their collective backgrounds at companies such as Intercom, Cohere, and Nominal inform Fern’s product direction and focus on developer experience.
Where is Fern (YC W23) based?
Fern is headquartered in Brooklyn, New York, United States, and operates as a privately held company with a team of 11-50 employees.
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