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Wasm Integrations OPA Ecosystem Projects

OPA’s Wasm Functionality has been used to build the following projects.

OPA Wasm Javascript Module

This project implements the OPA Wasm module interface in JavaScript.

Evolith

Evolith compiles its rule corpus to a policy.wasm bundle and evaluates it in Node.js through the OPA Wasm JavaScript module, so its CLI, GitHub Action, MCP server and REST API all run the same policy build. The distribution model is written up in ADR-0085.

OPA Wasm Rust Crate

This project implements the OPA Wasm module interface in Rust.

Wasm .NET Package (christophwille)

This project implements the OPA Wasm module interface in C#.

Wasm .NET Package (me-viper)

This project implements Open Policy Agent (OPA) WebAssembly .NET core SDK.

OPA Wasm Zig Library

This project implements the OPA Wasm module interface in Zig.

Wasm Java Gradle SDK (sangkeon)

This project implements the OPA Wasm module interface in Java.

Cloudflare Worker Enforcement of OPA Policies Using Wasm

This example project in OPA contrib uses the NodeJS OPA Wasm Module to enforce policy at the edge of Cloudflare's network.