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.
ReJot is a Y Combinator company in the Winter 2025 batch. Its directory entry describes it as: We turn complex API integrations into drop‑in full‑stack libraries. The founders listed are Wilco Kruijer (Founder/CEO), Jan Schutte (Founder/CTO) (Y Combinator directory entry, January 24, 2025).
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New accelerator entry · 2025-01-24 · the record
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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.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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