TL;DR: Butter is a Y Combinator Winter 2025 startup Embedded Sandboxes for Agents, currently active with a team of 2.
Embedded Sandboxes for Agents
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Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents. It embeds directly into your local process, providing a safe bash environment without the overhead of VMs or remote infra.
Built by LemStudio
Yes. Butter was funded by Y Combinator in the Winter 2025 batch. Embedded Sandboxes for Agents
Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents. It embeds directly into your local process, providing a safe bash environment without the overhead of VMs or remote infra.
Butter was part of Y Combinator's Winter 2025 batch.
Butter has a team of 2 people according to Y Combinator's directory.
Butter is currently listed as Active with a team of 2 in Y Combinator's directory.
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