ReJot YC Application

Winter 2025Active

ReJot went through Y Combinator in the Winter 2025 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Winter 2025
Industry: B2BEngineering, Product and Design
Team size: 2
Status: Active
Launched: 2025

Founders

Wilco KruijerFounder
Jan SchutteCTO / Co-Founder

What ReJot does

ReJot is building Fragno to let API companies go from simply exposing an API to offering drop-in integrations that work out of the box. Fragno is an open‑source framework for packaging backend endpoints, data storage patterns, and frontend utilities into reusable building blocks. API providers ship full integrations, not just low‑level SDKs and docs. Customers configure rather than write code, so integrations are both much faster to launch and far more consistent across customers.

ReJot's YC application, reconstructed

Y Combinator application

ReJot, Winter 2025 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

ReJot

Describe what your company does in 50 characters or less.

Turn complex API integrations into libraries

What is your company going to make? Please describe your product and what it does or will do.

We are building Fragno, an open-source framework that lets API companies package backend endpoints, data storage, and frontend utilities into reusable full-stack building blocks. Instead of just exposing raw APIs or SDKs, our product lets API providers ship drop-in integrations that customers configure rather than build from scratch, making integrations faster and more consistent.

Where do you live now, and where would the company be based after YC?

We live in Amsterdam, NH, Netherlands, and plan to base the company here after YC as well.

Explain your decision regarding location.

We want to stay in Amsterdam because we're embedded in the local engineering community and able to iterate quickly with early users nearby.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real ReJot YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from ReJot's public data (launch notes, founder backgrounds, product description). It shows how a company like ReJot would present itself to YC, not the text they submitted.