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lightbearco/tupper

lightbearco/tupper is an MIT-licensed open-source sandbox runtime for AI agents that lets agents execute code, run shell commands, and read and write files in an isolated environment without putting the host at risk; it is a self-hostable, platform-agnostic alternative to hosted code-execution sandboxes like E2B, Daytona, and Modal: the same E2B-style SDK, but running on the user's own machine thr

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Score7.9
Popularity122.0
Risklow
TierSilver
Score breakdown
Usefulness8.3
Novelty8.4
Momentum10.0
Maturity8.2
Open-source/build7.4
Evidence7.2
Workflow potential9.0
Setup ease6.5

Popularity is tracked separately. Support, ads, sponsorships, and tips never affect these signals.

Why it matters

Useful for AI agent builders who need a self-hostable code-execution sandbox that is a drop-in alternative to E2B, Daytona, or Modal; for teams that want a single SDK that works on macOS (Apple Containers), Linux (Firecracker), and Windows (WSL) without rewriting agent code per platform; for agent framework builders (deepagents / Mastra) who want a drop-in sandbox backend; for AI agents that need

Who should use it

BuildersPower users

Who should skip it

Skip if the source link, docs, or setup requirements do not match your workflow.

Risk explanation

Risk label needs manual review.

Evidence links

Closest alternatives / related signals

  • No close related item is available in the current public catalog.