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Monty (Pydantic)

MIT in-process Rust Python sandbox — OSS Monty only

AI Agents / Orchestration · OSS/MIT · 8.7k

Reviewed 2026-10-01 · last push 2026-10-18 · repo checked 2026-10-19

What's Good

MIT (pydantic/monty). OSS Monty only: `pydantic-monty` / `@pydantic/monty` / crates. Full Monty commercial is a separate product and is not required for the OSS bar. In-process Rust-backed Python sandbox aimed at agent tool runs and eval harnesses.

The Catch

★8499 in about 41 weeks (~207 a week): judge it on the sandbox shape, not the star count. Vs E2B / AIO Sandbox / CubeSandbox: those are hosted Firecracker seats, broader sandbox/browser/MCP runtimes, or self-hosted RustVMM/KVM density — Monty’s catch is in-process Rust Python sandbox from Pydantic, not a sandbox SaaS seat. Do not confuse OSS Monty packages with Full Monty commercial; pin the MIT crates/npm/PyPI names.

Verdict

MIT in-process Python sandbox when agents need Pydantic Monty OSS — not E2B/AIO/CubeSandbox cloud or KVM seats; ignore the ★ spike.

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