Multi-machine command center
Bring agents running on laptops, desktops, servers, and cloud machines into one interface, with machine status and latency visible from the app.
Harness
Harness is a command center for managing and monitoring AI agents across laptops, desktops, servers, and cloud machines, with parallel task control.
AI agent control across your machines
Harness is a multi-device command center for AI agents. Its app brings agents such as Claude Code, Codex, Cursor, and OpenCode together across laptops, desktops, servers, and cloud machines, so users can see activity and send work without switching between separate environments.
The wider Harness product family includes the free Harness App, Harness Device, and Harness Pro. The app focuses on managing agents and machines; the Device adds a round, always-on desk display with voice and touch controls; Pro places agent views on a desk screen. Harness also supports workflows beyond software development through live tool environments for design, circuits, robotics, games, music, chemistry, documents, and data.
Core features
Parallel agent workspaces
Run agents in separate worktrees so parallel tasks can work on their own branches without clashing.
Task dispatch and control
Use keyboard shortcuts, tap controls, or voice input to send tasks, answer waiting agents, and start work without manually selecting a machine.
Live status and feedback
Follow terminal activity, task progress, completed work, and approval requests across agents from desktop, mobile, or an always-on desk display.
Beyond-code workflows
Connect coding agents to live tools and viewers for Blender, CircuitJS, MuJoCo, Godogen, Strudel, RDKit, Typst, and Jev Sheets workflows.
Local execution and encrypted connections
Keep repositories and agent execution on the connected machine, with encrypted connections and direct WebRTC paths described in the app materials.
How people use Harness
Run parallel software tasks
Keep Claude Code, Codex, or other agents working on separate branches and worktrees while monitoring terminal output and test results in one window.
Coordinate distributed machines
Send work to the appropriate laptop, office desktop, home server, GPU box, or cloud machine without first navigating to that computer.
Prototype technical and creative projects
Use live viewers and real tools to iterate on Blender designs, simulate robots in MuJoCo, test circuits in CircuitJS, or build playable games with Godogen.
Monitor unattended work
Step away from the app or close a laptop while agents continue running, then review finished work or respond when an agent needs a decision.
Control agents from a workspace
Use the Device or Pro display at a desk to see which agent needs attention and provide the next instruction with a tap or voice command.
Pros and Cons
Pros
- Centralizes agents running across personal computers, servers, and cloud machines.
- Supports parallel work through separate worktrees and branch-based agent sessions.
- Offers desktop, mobile, voice, keyboard, touch, and dedicated-display interaction options across the product family.
- Extends agent workflows beyond coding into several visual, technical, and creative tools.
- Source materials describe encrypted connections and keeping repositories and execution on the machine where the agent runs.
Cons
- The most detailed platform information is centered on Mac; Linux is listed as in progress for the desktop app.
- The product family is split across App, Device, and Pro offerings, so the exact workflow and hardware features depend on which product is used.
- Support and setup details for every listed agent or non-coding workflow are not fully specified in the available source.
FAQ
What platforms does Harness support?
Harness App is available as a free download for Mac. The source also lists Linux as in progress and provides mobile app references for iOS and Android workflows.
What kinds of machines can Harness work with?
Harness connects agents running across laptops, home machines, office desktops, servers, and cloud machines. The app presents those machines and agents in one command center.
Which AI agents are supported?
The source lists Claude Code, Codex, Cursor, OpenCode, Pi, Hermes, Command Code, Devin, Muse, Amp, Kilo, Grok, Antigravity, and Copilot, with more agents joining. Exact support may vary by app or device workflow.
Can agents keep working when I step away?
The Harness App lets agents continue working after the app is closed. The Device and Pro products provide at-desk status and interaction options, while the app shows running, completed, and waiting work.
How does Harness handle work and connection data?
Harness is designed to keep files, diffs, commits, logs, and repositories on the machine where the agent runs. The source says its relay forwards data it cannot read and that direct machine-to-machine WebRTC connections can be used.
Quick Facts
- Category
- Developer tool; AI productivity
- Desktop availability
- Free Mac download; Linux in progress
- Product family
- Harness App, Harness Device, and Harness Pro
- Primary workflow
- Dispatch and monitor AI agents across multiple machines
- Agent examples
- Claude Code, Codex, Cursor, OpenCode, Pi, Hermes, Devin, and Copilot
- Hardware pricing shown
- Harness Device $149; Harness Pro $299
Harness Alternatives
SonOf
SonOf connects to your repo and PM tool, audits your codebase, and turns approved work into shipped tickets with senior engineering review.
ByteAsk
ByteAsk is a terminal-first AI coding agent for C and C++ that edits repos and verifies changes with compilers, debuggers, sanitizers, and tests.
Epherem
Epherem scans web apps built with Lovable, Bolt, v0, Replit, Cursor, and Claude Code for security flaws in source code and dependencies, without running the app.
Lasso
Lasso is an ecommerce product data platform for enriching catalog records, processing supplier files, generating product content, and tracking competitors. It includes a web app, REST API, SDK, and MCP server.
CreateOS Sandbox
CreateOS Sandbox is an isolated compute environment for running code and agent workloads in Firecracker micro-VMs with private networking and SDK, CLI, or MCP control.
Biji
Biji is a versatile platform designed to enhance productivity through innovative tools and features.