Czech startup E2B, which focuses on developing cloud infrastructure designed specifically for AI agents and applications, has raised $11.5 million in seed funding. The round was led by Decibel Partners, joined by Kaya VC and Sunflower Capital, CzechCrunch reports.

About startup

  • Founded in 2023 by childhood friends Tomáš Valenta and Václav Mlejnský who have their roots in mobile game development. Their current company, E2B now focuses on developing cloud infrastructure designed specifically for AI agents and applications.

  • E2B is an open-source runtime for executing AI-generated code in secure cloud sandboxes. According to the company, the solution is specifically made for agentic and AI use cases.
Tomáš Valenta and Václav Mlejnský. Image: E2B

“At E2B, we are building an open source cloud environment for the era of software that is built by artificial intelligence and so-called AI agents,”  Václav Mlejnsk, E2B co-founder, explained to CzechCrunch.

Investment details

The seed round was led by Decibel Partners. The Czech fund Kaya VC, as well as Sunflower Capital and other angel investors, also participated in the financing.

  • Decibel Partners is an independent venture firm founded in 2019 and based in Silicon Valley that supports technical founders in achieving product-market fit and growing their businesses. It invests in Seed, Series A, and Series B software companies, focusing on Developer Platforms, Open Source, Cybersecurity, and ML/AI Infrastructure. 

“E2B powers millions of sandboxes every month for AI agents; there won't be any agentic workflow that doesn't rely on some code execution, and we're building the best platform for that 💪  Excited to partner with the team!” Alession Fanelli commented on the deal in his LinkedIn page.

The financing will aid E2B in its journey to simplify the process of running and testing AI-generated code in “sandboxes”, safe testing environments that use a company’s own data.