APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth.
Fern is a Y Combinator company in the Winter 2023 batch. Its directory entry describes it as: Instantly offer SDKs and API Docs. The founders listed are Danny Sheridan (Founder), Zach Kirsch (Founder), Deep Singhvi (Founder) (Y Combinator directory entry, January 29, 2023).
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth.
Fern helps companies deliver SDKs and API documentation that they’re are proud to share with their customers.
We’re fewer than 40 people, based in Brooklyn, NY, and are building open source.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 634 companies held here in B2B › Engineering, Product and Design.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
A Full Report on Fern: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Fern covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
1 cited source found
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