Fundraising Fox
James Grugett
FounderFounder at Manifold · CEO at Freebuff
San Francisco, California, United States
FoundedFreebuff · YCManifold · YC
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About
James Grugett founded Manifold Markets, a prediction market platform with over 150,000 user-created markets. He is now building Codebuff, an AI-powered CLI tool for code generation.
Founder at ManifoldYC S26
Intro paths
James went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jon Xu, General Partner at Y Combinator — the partner who ran Manifold's batch and knows the company first-hand. YC profile ↗
In turn, James can intro founders to Manifold's investors below.
Manifold's investors · 7
Co-founders at Manifold
CEO at FreebuffYC F24
Intro paths
James went through Y Combinator (Fall 2024) — any YC alum in your network can reach them through the YC community.
In turn, James can intro founders to Freebuff's investors below.
Frequently asked questions
- Who is James Grugett?
- James Grugett founded Manifold Markets, a prediction market platform with over 150,000 user-created markets. He is now building Codebuff, an AI-powered CLI tool for code generation.
- Where does James Grugett work?
- James Grugett is CEO of Freebuff and Founder at Manifold.
- What companies did James Grugett found?
- James Grugett founded Freebuff, Manifold.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Google mafia1,712
Also came through, then founded or led a company.
Microsoft mafia1,488
Also came through, then founded or led a company.
Carnegie Mellon University mafia562
Also came through, then founded or led a company.
Carnegie Mellon University School of Computer Science mafia15
Also came through, then founded or led a company.
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