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Installation

This guide covers installing the mpe CLI and the Go library.

Installing the CLI

Using Homebrew (macOS/Linux)

The easiest way to install mpe on macOS or Linux is via Homebrew using our custom tap:

brew tap manetu/tap
brew install mpe

To upgrade to the latest version:

brew upgrade mpe

From Source

Clone the repository and build:

git clone https://github.com/manetu/policyengine.git
cd policyengine
make build

The binary will be created at target/mpe. Add it to your PATH:

# Add to your shell profile (.bashrc, .zshrc, etc.)
export PATH=$PATH:/path/to/policyengine/target

Using Go Install

If you have Go installed, you can install directly:

go install github.com/manetu/policyengine/cmd/mpe@latest

Verifying Installation

After installation, verify the CLI is working:

mpe --help

You should see output like:

NAME:
   mpe - A CLI application for working with the Manetu PolicyEngine

USAGE:
   mpe [global options] [command [command options]]

COMMANDS:
   test     Invokes various aspects of policy-decision flow, simplifying policy-domain authoring and verification
   serve    Creates a decision-point service
   lint     Validate PolicyDomain YAML files for syntax errors and lint embedded Rego code
   build    Build PolicyDomain YAML from PolicyDomainReference (with external .rego files)
   version  Print the version of mpe
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --trace, -t  Enable OPA trace logging output to stderr for commands that evaluate REGO
   --help, -h   show help

Installing the Go Library

To use the PolicyEngine in your Go application:

go get github.com/manetu/policyengine@latest

Then import into your code:

import (
    "github.com/manetu/policyengine/pkg/core"
    "github.com/manetu/policyengine/pkg/core/options"
)

Development Setup

If you want to contribute to the PolicyEngine:

# Clone the repository
git clone https://github.com/manetu/policyengine.git
cd policyengine

# Install dependencies
go mod download

# Run tests
make test

# Run all checks (lint, test, static analysis)
make all

Next Steps

Now that you have the CLI installed, proceed to:

• Quick Start - Create your first PolicyDomain
• CLI Reference - Learn all CLI commands