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  "markdown": "Founder, Windmill.\n\nRuben Fiszel founded Windmill, an open-source platform that turns scripts into internal apps and workflows, which joined Y Combinator in summer 2022. He earlier built distributed systems at Palantir, researched compilers at Stanford and ran engineering at a multi-party computation startup.\n\n- LinkedIn: https://www.linkedin.com/in/rubenfiszel/\n\n## What Ruben builds\n\n- [Windmill API + MCP](https://www.anchorterminal.com/tools/windmill.md), graded C, 56/100, in Workflow automation. Code-first engine for scripts, flows and internal apps in 20+ languages, written in Rust, on Windmill Cloud or self-hosted. Founder, Windmill, researched 2026-10-28.\n\n## Backed by\n\n- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)\n- [Gradient Ventures](https://www.anchorterminal.com/investors/gradient-ventures/)\n- [Bessemer Venture Partners](https://www.anchorterminal.com/investors/bessemer-venture-partners/)\n\n## Questions\n\n### Who is Ruben Fiszel?\n\nRuben Fiszel founded Windmill, an open-source platform that turns scripts into internal apps and workflows, which joined Y Combinator in summer 2022. He earlier built distributed systems at Palantir, researched compilers at Stanford and ran engineering at a multi-party computation startup.\n\n### What does Windmill Labs make?\n\nAnchor Terminal lists Windmill API + MCP from Windmill Labs. Code-first engine for scripts, flows and internal apps in 20+ languages, written in Rust, on Windmill Cloud or self-hosted.\n\n### Who has invested in Windmill Labs?\n\nThe sources our research read name Y Combinator, Gradient Ventures and Bessemer Venture Partners.\n\n### How are Ruben's tools graded?\n\nWindmill API + MCP is graded C, 56 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.windmill.dev/\n- https://www.ycombinator.com/companies/windmill\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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