HyperAgent

An AI agent with a sandboxed JavaScript executor, powered by Hyperlight micro-VMs and the GitHub Copilot SDK.

Ask the agent to compute things, and it writes & runs JavaScript in a hardware-isolated micro-VM — no filesystem, no network, no escape.

Warning: HyperAgent is pre-release software created by AI. Not for production use. Be careful where you run it and what you do with it. Consider running in a container.

Quick Start

Prerequisites

Linux with KVM, Azure Linux with MSHV, or WSL2 with KVM (hardware virtualization required)
GitHub authentication (see below)
Docker (for containerized option)
Node.js 22+ (for npm install / source builds only)
Rust + just (for source builds only — see Contributing)

NOTE: HyperAgent does not currently run on macOS due to this issue. Native Windows support (WHP) is planned — for now, use WSL2 with KVM on Windows.

GitHub Authentication

HyperAgent uses the GitHub Copilot SDK, which requires a GitHub account with Copilot access. Authenticate before running:

# Install the GitHub CLI if you don't have it
# https://cli.github.com/

# Log in to GitHub (select HTTPS, authenticate via browser)
gh auth login

# Verify it worked
gh auth status

Alternatively, set GITHUB_TOKEN directly:

export GITHUB_TOKEN="ghp_your_token_here"

Option 1: Docker (recommended)

# Pull the image
docker pull ghcr.io/hyperlight-dev/hyperagent:latest

# Run with KVM (Linux / bash)
docker run -it --rm \
  --device=/dev/kvm \
  --group-add $(stat -c '%g' /dev/kvm) \
  --user "$(id -u):$(id -g)" \
  -e HOME=/home/hyperagent \
  -e GITHUB_TOKEN="$(gh auth token)" \
  -v "$HOME/.hyperagent:/home/hyperagent/.hyperagent" \
  -v "$HOME/.hyperagent/tmp:/tmp" \
  -v "$(pwd)":/workspace -w /workspace \
  ghcr.io/hyperlight-dev/hyperagent:latest

# Run with MSHV (Azure Linux / bash)
docker run -it --rm \
  --device=/dev/mshv \
  --group-add $(stat -c '%g' /dev/mshv) \
  --user "$(id -u):$(id -g)" \
  -e HOME=/home/hyperagent \
  -e GITHUB_TOKEN="$(gh auth token)" \
  -v "$HOME/.hyperagent:/home/hyperagent/.hyperagent" \
  -v "$HOME/.hyperagent/tmp:/tmp" \
  -v "$(pwd)":/workspace -w /workspace \
  ghcr.io/hyperlight-dev/hyperagent:latest

Non-interactive mode with environment variables (Linux / bash):

# Set a prompt via env var — the container picks up HYPERAGENT_* and HYPERLIGHT_* automatically
export HYPERAGENT_PROMPT="Create a summary report of today's top tech news"
docker run -it --rm \
  --device=/dev/kvm \
  --group-add $(stat -c '%g' /dev/kvm) \
  --user "$(id -u):$(id -g)" \
  -e HOME=/home/hyperagent \
  -e GITHUB_TOKEN="$(gh auth token)" \
  -e HYPERAGENT_PROMPT \
  -v "$HOME/.hyperagent:/home/hyperagent/.hyperagent" \
  -v "$HOME/.hyperagent/tmp:/tmp" \
  -v "$(pwd)":/workspace -w /workspace \
  ghcr.io/hyperlight-dev/hyperagent:latest --auto-approve --profile file-builder

Non-interactive mode (Windows / PowerShell with WSL2 + KVM):

$env:HYPERAGENT_PROMPT = "Create a summary report of today's top tech news"
docker run -it --rm `
  --device=/dev/kvm `
  -e HOME=/home/hyperagent `
  -e GITHUB_TOKEN="$(gh auth token)" `
  -e HYPERAGENT_PROMPT="$env:HYPERAGENT_PROMPT" `
  -v "$HOME/.hyperagent:/home/hyperagent/.hyperagent" `
  -v "$HOME/.hyperagent/tmp:/tmp" `
  -v "${PWD}:/workspace" -w /workspace `
  ghcr.io/hyperlight-dev/hyperagent:latest --auto-approve --profile file-builder

Environment variables: COPILOT_MODEL, HYPERAGENT_*, and HYPERLIGHT_* env vars control the model, prompt, and sandbox settings. When using docker run directly, pass each with -e VAR_NAME. The wrapper script forwards them all automatically.

Tip: For convenience, the wrapper script auto-detects the hypervisor, handles auth, and forwards all config env vars.

Option 2: npm package

# Configure npm for GitHub Packages
npm config set @hyperlight-dev:registry https://npm.pkg.github.com

# Install globally
npm install -g @hyperlight-dev/hyperagent

# Run (requires KVM/MSHV and GitHub auth)
hyperagent

Option 3: Build from source

Requires Node.js 22+, Rust toolchain, and just task runner.

# Clone the repo
git clone https://github.com/hyperlight-dev/hyperagent.git
cd hyperagent

# First-time setup — clones deps, builds native Rust addons, installs npm packages
just setup

# Run the agent (tsx transpiles on the fly — no build step needed)
just start

# Or build a standalone binary
just binary-release
dist/bin/hyperagent

Key just commands:

Command	What it does
`just setup`	First-time setup (clone deps, build native addons, npm install)
`just build`	Rebuild native addons after Rust changes
`just start`	Run agent with tsx (fast iteration)
`just binary-release`	Build optimised standalone binary to `dist/bin/hyperagent`
`just test`	Run TypeScript test suite
`just check`	Full quality gate (lint + typecheck + test)

See docs/DEVELOPMENT.md for the full development guide.

Usage

# Interactive mod
hyperagent

# With a specific model
hyperagent --model gpt-4.1

# Non-interactive mode
hyperagent --prompt "Calculate the first 100 prime numbers" --auto-approve

# With skills and profiles
hyperagent --skill pptx-expert --profile file-builder

Example Session

  ╔════════════════════════════════════════════════╗
  ║                                                ║
  ║    H Y P E R A G E N T                         ║
  ║       v0.0.0-alpha.362+abc1234                 ║
  ║                                                ║
  ║    Hyperlight × Copilot SDK Agent              ║
  ║    Sandboxed JavaScript Execution              ║
  ║                                                ║
  ╚════════════════════════════════════════════════╝

  ⚠  WARNING: Pre-release software created by AI.
     Not for production use. Be careful where you run it and what you do with it.

You: Calculate fibonacci(30)

  🔧 Calling execute_javascript...
  ✅ Result: 832040

The 30th Fibonacci number is 832040.

Try These Out

Write a Markdown report:

Linux (bash):

export HYPERAGENT_PROMPT="Write a report comparing the latest iPhone and Android phones, with a summary table of specs and pros/cons. Write the report as a markdown file and save it to disk."

Windows (PowerShell):

$env:HYPERAGENT_PROMPT = "Write a report comparing the latest iPhone and Android phones, with a summary table of specs and pros/cons. Write the report as a markdown file and save it to disk."

hyperagent --auto-approve --show-code --verbose

Build a PPTX presentation:

Linux (bash):

export HYPERAGENT_PROMPT="Research the JWT spec (header, payload, signature). Include:
- Title slide
- ""What is JWT?"" with bullet list of key points
- Code block showing a decoded JWT structure
- Flow diagram slide (use arrows and boxes to show auth flow)
- Security best practices numbered list
- Common vulnerabilities comparison table
- Resources/links slide
Use 'light-clean' theme, minimal transitions."

Windows (PowerShell):

$env:HYPERAGENT_PROMPT = @"
Research the JWT spec (header, payload, signature). Include:
- Title slide
- "What is JWT?" with bullet list of key points
- Code block showing a decoded JWT structure
- Flow diagram slide (use arrows and boxes to show auth flow)
- Security best practices numbered list
- Common vulnerabilities comparison table
- Resources/links slide
Use 'light-clean' theme, minimal transitions.
"@

hyperagent --auto-approve --show-code --verbose

CLI Options

Run hyperagent --help for full list. See docs/USAGE.md for complete reference.

Key options:

Flag	Description
`--model <name>`	LLM model (default: `claude-opus-4.6`)
`--prompt "<text>"`	Non-interactive mode: run prompt and exit
`--auto-approve`	Auto-approve all prompts (for scripting)
`--skill <name>`	Load domain expertise (e.g., `pptx-expert`)
`--profile <name>`	Apply resource profile (`file-builder`, `web-research`, etc.)
`--version`	Show version and exit
`--help`	Show all options

Slash Commands

Type /help in the REPL for full list. Key commands:

Command	Description
`/model <name>`	Switch models mid-conversation
`/plugin enable <name>`	Enable a plugin (fs-read, fs-write, fetch)
`/config`	Show current configuration
`/new`	Start fresh session
`/exit`	Exit

Architecture

┌───────────────────────────────────────────────────────┐
│                  Interactive REPL                     │
├───────────────────────────────────────────────────────┤
│              GitHub Copilot SDK Session               │
│    streaming | infinite sessions | multi-model        │
├───────────────────────────────────────────────────────┤
│                  Tool Gating Layer                    │
│    (blocks all SDK built-in tools like bash/edit)     │
├───────────────────────────────────────────────────────┤
│                   Custom Tools                        │
│    register_handler, execute_javascript, ask_user     │
│    manage_plugin, apply_profile, sandbox_help ...     │
├──────────────────────────┬────────────────────────────┤
│  Hyperlight Sandbox      │  Plugin System (HOST)      │
│  ┌────────────────────┐  │                            │
│  │  QuickJS VM        │  │  - fs-read, fs-write       │
│  │  - No FS/Net       │<-│  - fetch (SSRF-safe)       │
│  │  - CPU bounded     │  │  - LLM-audited             │
│  │  - Memory safe     │  │                            │
│  └────────────────────┘  │  Runs on Node.js host,     │
│                          │  not inside the VM.        │
├──────────────────────────┴────────────────────────────┤
│              Hyperlight Validation Sandbox            │
│    (validates generated code before execution)        │
└───────────────────────────────────────────────────────┘

Plugins

Plugins extend the sandbox with host capabilities:

Plugin	Description
`fs-read`	Read files (path-jailed)
`fs-write`	Write files (path-jailed)
`fetch`	HTTPS fetch (domain allowlist, SSRF protection)

Enable with /plugin enable <name> or via profiles.

See docs/PLUGINS.md for authoring your own plugins.

Security

Hardware isolation: JavaScript runs in Hyperlight micro-VMs
Tool gating: SDK tools (bash, edit, etc.) are blocked
Code validation: LLM-generated code validated before execution
Plugin auditing: LLM analyzes plugin code before enabling
Path jailing: File plugins restricted to configured directories
SSRF protection: Fetch plugin validates DNS and post-connect IPs

See SECURITY.md and docs/SECURITY.md for details.

Documentation

Document	Description
How It Works	User-focused system overview
Usage Guide	Complete CLI and feature reference
Architecture	System design and components
Security Model	Detailed security architecture
Code Validation	Pre-execution code validation
Plugins	Plugin system and authoring guide
Skills	Domain expertise system
Patterns	Code generation patterns
Modules	ES module system
Profiles	Resource profiles
Development	Development environment setup
Releasing	Release process

Contributing

See CONTRIBUTING.md for contribution guidelines.

For development setup, see docs/DEVELOPMENT.md.

Releasing

See docs/RELEASING.md for release process.

License

Apache 2.0 — see LICENSE.txt

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
.claude		.claude
.github		.github
builtin-modules		builtin-modules
docs		docs
patterns		patterns
plugins		plugins
scripts		scripts
skills		skills
src		src
tests		tests
.dockerignore		.dockerignore
.gitignore		.gitignore
CHANGELOG.md		CHANGELOG.md
CLAUDE.md		CLAUDE.md
CODE_OF_CONDUCT.md		CODE_OF_CONDUCT.md
CONTRIBUTING.md		CONTRIBUTING.md
Dockerfile		Dockerfile
Justfile		Justfile
LICENSE.txt		LICENSE.txt
README.md		README.md
SECURITY.md		SECURITY.md
SUPPORT.md		SUPPORT.md
package-lock.json		package-lock.json
package.json		package.json
tsconfig.json		tsconfig.json
vitest.config.ts		vitest.config.ts

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HyperAgent

Quick Start

Prerequisites

GitHub Authentication

Option 1: Docker (recommended)

Option 2: npm package

Option 3: Build from source

Usage

Example Session

Try These Out

Write a Markdown report:

Build a PPTX presentation:

CLI Options

Slash Commands

Architecture

Plugins

Security

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Contributing

Releasing

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HyperAgent

Quick Start

Prerequisites

GitHub Authentication

Option 1: Docker (recommended)

Option 2: npm package

Option 3: Build from source

Usage

Example Session

Try These Out

Write a Markdown report:

Build a PPTX presentation:

CLI Options

Slash Commands

Architecture

Plugins

Security

Documentation

Contributing

Releasing

License

About

Resources

License

Code of conduct

Contributing

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