OpenSpec
New accelerator entry · 2026-03-05 · the record
In their words
OpenSpec is an open-source, spec-driven framework. We help developers plan complex features by creating lightweight spec documents that serve as durable context for their coding agents. With 20k+ GitHub stars, we’re one of the leading spec-driven frameworks, used by thousands of developers and teams to plan and ship with the coding agent of their choice. Our philosophy is simple: keep planning lightweight and iterative, and match how software actually gets built, messy, evolving, and real, without dragging teams into rigid, bureaucratic workflows.
What the record says
- One of 193 companies held here in B2B.
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.
The full profile
Source Check, INVEST, RECRUIT and Press Requests on OpenSpec
- Source Check — verify what OpenSpec states, against the registers that hold it.
- INVEST — size up this company on the figures its record states.
- RECRUIT — see who is already on the team.
- Press Requests — connect with OpenSpec for a story.
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist OpenSpecYou get an alert in MentionFox the next time this company shows up.
Is this you?
If you're behind OpenSpec: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. FoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.
Sourced from the company's Y Combinator directory entry.