Harness CLI (AIOS)

Local-first agent workflow layer for codex, claude, gemini, opencode, hermes, and grok (Grok Build). Keep the coding client you already use. Add project memory, adaptive routing, multi-agent collaboration, and verification.

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Why Harness CLI

Bare coding CLIs are great at editing files. They are weaker at:

Harness CLI does not replace Codex, Claude Code, Gemini CLI, OpenCode, Hermes, or Grok Build. It sits underneath them as a local workflow layer.

Install in 30 seconds

macOS / Linux:

curl -fsSL https://github.com/rexleimo/harness-cli/releases/latest/download/aios-install.sh | bash
source ~/.zshrc   # or ~/.bashrc
aios init --all
aios doctor --native --verbose

Windows PowerShell:

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
irm https://github.com/rexleimo/harness-cli/releases/latest/download/aios-install.ps1 | iex
. $PROFILE
aios init --all
aios doctor --native --verbose

Run these from a project root when you want project-level guidance and memory.

Unattended install:

node scripts/aios.mjs init --all --yes-compression-tools --yes-headroom-mcp

How it fits together

Your coding client (codex / claude / gemini / opencode / hermes / grok)
        │
        ▼
  Harness CLI guidance + Workflow Policy
        │
        ├── ContextDB   local project memory (pull-based)
        ├── rex-harness software control plane (Fact → Capability → Evidence)
        ├── Team / Solo long-running or parallel work
        └── Doctor / Privacy / verification evidence

rex-harness is a required planning runtime for AIOS. Release installers already bundle the pinned submodule, so a normal release install does not need a second npm package or MCP service. From source:

git clone --recurse-submodules https://github.com/rexleimo/harness-cli.git

If the clone skipped submodules, aios init / aios setup will try git submodule update --init --recursive -- rex-harness and stop with a clear fix if recovery fails.

Rex is the default workflow for new installs. Superpowers is retired as an AIOS workflow component. See the Rex Workflow Migration guide.

Quick tour

# Initialize project marker + detected client guidance
aios init --all

# Inspect install, native client sync, safety checks
aios doctor --native --verbose

# Save and search a durable project decision
aios memo add "Keep authentication tests strict"
aios memo search "authentication"

# Parallel work or a resumable objective
aios team 3:codex "Review the auth module and update its tests"
aios harness run --objective "Finish the release handoff" --worktree

# Preview adaptive routing without creating a live plan
node scripts/aios.mjs plan auto-gate --task "Refactor the auth module" --dry-run --json

The project marker points clients at .aios/context-db/index.json. ContextDB is pull-based: agents search or recall relevant material instead of receiving the whole history on every prompt.

Supported clients

Native or compatibility integrations for:

codex · claude · gemini · opencode · hermes · grok (Grok Build)

Feature depth varies by client. Run aios doctor --native --verbose instead of assuming every route exists everywhere.

Documentation map

Requirements

• Git
• Node.js 24 LTS and npm
• Windows: PowerShell 5.x or 7
• At least one supported coding client

Development

git clone --recurse-submodules https://github.com/rexleimo/harness-cli.git
cd harness-cli
npm run test:scripts
cd mcp-server && npm run typecheck && npm test && npm run build

When a canonical Skill changes, certify and verify training evidence before commit:

node scripts/aios.mjs skill certify --changed --base HEAD --json
node scripts/aios.mjs skill verify-training --changed --base HEAD --json

Subprojects

License

See CHANGELOG.md for version history and release notes.