HumanLayer

HumanLayer

HumanLayer is a multiplayer coding agent IDE and cloud workspace where engineering teams run AI agent sessions, review plans, and collaborate on code diffs in one place.

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AI Agentai-workflowAI API
Last Updated Oct 21, 2026
HumanLayer screenshot

About

HumanLayer is a multiplayer coding agent workspace — an IDE plus cloud service that lets software teams run AI coding agents collaboratively. It addresses a common pain point with agentic coding: sessions, planning documents, and code changes are usually scattered across terminals, chat threads, and documents, making it hard for teams to see what an agent did or why. HumanLayer gathers agent sessions, plan artifacts, and code diffs into a single shared workspace.

At a high level, HumanLayer organizes work around Tasks, each of which groups related agent sessions, artifacts (research notes, design docs, structure outlines, mockups, and plans), and worktrees. A local daemon runs multiple agent sessions in parallel on a laptop, and cloud daemons handle longer-running work; everything syncs through the HumanLayer API and is accessible from web, desktop, or mobile. The company is also known in the engineering community for its writing on context engineering and the 12 Factor Agents guide.

Key Features

Tasks that group sessions and artifacts: Each task bundles agent sessions, versioned artifacts, and git worktrees into one workspace the whole team can open and contribute to.
QRSPI structured workflow: A six-phase process — Questions, Research, Design, Structure, Plan, Implement — that turns an idea into shipped code through verifiable checkpoints, with room to push back at every phase.
Comment-driven design reviews: Humans and agents leave inline comments on design documents in real time, so mistakes are caught before thousands of lines of code are written. Comments feed directly back to the agents rather than living in a disconnected doc.
Full session visibility: Users can monitor high-level orchestration or drill into individual thinking messages, subagent tool calls, and every code change an agent makes.
Local and cloud execution: A local daemon runs parallel agent sessions on the user's machine, while cloud daemons keep long-running agents working even after the laptop is closed; the same UI is available across devices.
Fast keyboard-driven navigation: A command palette and keyboard shortcuts let users jump between tasks, sessions, and artifacts, and send actions to agents without touching the mouse.
Composable architecture: Teams can bring their own compute, development environment, and agent harness, or run the HumanLayer stack on a workstation or remote workers.

Pricing & Fees

  • Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans.
  • Installation: Available for macOS download, with Linux and Windows install instructions and a Homebrew tap (`brew install humanlayer/humanlayer/humanlayer`).
  • Cross-device access: The same workspace is available on web, desktop, and mobile, with teammates one tab away.
  • Design philosophy: The product emphasizes keeping engineers in control of code quality and architecture rather than delegating decisions wholesale to agents.

Who It's For

HumanLayer is built for software engineering teams that use AI coding agents for substantial work, especially in large codebases. Typical users include backend and full-stack engineers running multiple agent sessions in parallel, tech leads who want visibility into what agents are changing, and platform teams assembling internal development tooling. It suits organizations where design review matters — teams that want clarifying questions, research, and design docs produced and critiqued before implementation begins, and where multiple people need to collaborate on the same agent-driven task.

FAQ

What is HumanLayer?HumanLayer is a multiplayer coding agent IDE and cloud workspace that brings agent sessions, plan artifacts, and code diffs together in one place so teams can collaborate on AI-assisted software development.

Is HumanLayer free, and what does it cost?Pricing is not publicly listed on the pages we reviewed; the official site should be checked for current plans and costs.

What platforms does HumanLayer support?It offers a macOS download plus Linux and Windows install instructions, runs a local daemon on the user's machine, supports cloud daemons for long-running work, and provides the same UI on web, desktop, and mobile.

Can teams use their own agents and infrastructure with HumanLayer?Yes — HumanLayer ships composable pieces, so teams can bring their own compute, development environment, and agent harness, or run the HumanLayer stack on their workstation or remote workers.

How does HumanLayer differ from writing design docs in Notion or Google Docs?In HumanLayer, comments and decisions on design documents feed directly back into the agent sessions, so the document acts as an interface to the code rather than an artifact detached from the work.