---
id: hyperlight-sandbox-backend-wasm
version: "0.5.0"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# hyperlight-sandbox-backend-wasm — Wasm backend implementation for hyperlight-sandbox

License: permissive · Maintenance: active · Downloads: 184.1K/mo

## What it is and what it does

This is a native WebAssembly backend module for the hyperlight-sandbox Python API. It implements sandboxed code execution by running untrusted code within a Wasm runtime, isolating it from the host system. The package is written in Rust and compiled to platform-specific wheels for Linux (manylinux_2_34) and Windows x86_64, supporting Python 3.10 through 3.14.

As a backend implementation, this package is typically used as part of a larger sandboxing solution where you need to execute potentially untrusted or experimental code in a controlled environment. It provides the low-level Wasm execution layer that the hyperlight-sandbox API wraps and exposes to Python developers.

Use it for:

- Running untrusted user-submitted code safely without compromising host security
- Executing experimental or third-party plugins in an isolated Wasm environment
- Building serverless or function-as-a-service platforms that need code isolation
- Testing and validating code in a sandboxed context before full deployment

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides a WebAssembly backend implementation for the hyperlight-sandbox Python API, enabling sandboxed code execution via Wasm.

Yes, if you are building on the hyperlight-sandbox API and need Wasm-based code isolation. The package is actively maintained, has no known vulnerabilities, and supports current Python versions. Install friction is moderate due to platform-specific wheels, but pre-built binaries are available for common platforms. Verify that your use case requires Wasm isolation specifically and that you have the parent hyperlight-sandbox package available.

## Install

pip install hyperlight-sandbox-backend-wasm
uv add hyperlight-sandbox-backend-wasm
poetry add hyperlight-sandbox-backend-wasm

## Installing hyperlight-sandbox-backend-wasm

Before you install: Medium install friction due to platform-specific compiled wheels (manylinux_2_34 and Windows x86_64 only). Active maintenance status with a recent release. Requires Python 3.10 or later.

License in practice: Apache-2.0 permissive license allows commercial and private use with minimal restrictions.

Quickstart:

# Install the package
pip install hyperlight-sandbox-backend-wasm==0.5.0

# Typically used as a backend for hyperlight-sandbox
from hyperlight_sandbox_backend_wasm import WasmBackend
backend = WasmBackend()

Requires Python 3.10 or later; only pre-built wheels available for Linux (manylinux_2_34) and Windows x86_64 platforms.

Verify before relying:

- Whether this package can be installed standalone or requires the parent hyperlight-sandbox package as a dependency
- Performance characteristics and resource overhead of the Wasm backend compared to other backends
- Specific Wasm runtime or system requirements beyond the Python version constraint

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: medium
- Maintenance: active
- Downloads: 184.1K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

wasm sandbox backend, webassembly code execution, hyperlight sandbox wasm, sandboxed wasm runtime, python wasm isolation, sandboxing, webassembly, isolation

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