Getting Started

Installation

Praxis provides a unified installer CLI @ouonet/praxis, while remaining fully compatible with native plugin ecosystems of all supported AI harnesses.

Method 1: Praxis CLI (Recommended)

Without pre-installing anything globally, use npx to check status, install, or update Praxis across any host environment:

# Check installed AI hosts and Praxis status
npx @ouonet/praxis status

# Install Praxis to all detected hosts at once
npx @ouonet/praxis install --host all

# Install for a specific host
npx @ouonet/praxis install --host claude --scope user
npx @ouonet/praxis install --host opencode --scope project
npx @ouonet/praxis install --host codex --scope local
npx @ouonet/praxis install --host antigravity
npx @ouonet/praxis install --host pi
npx @ouonet/praxis install --host omp
npx @ouonet/praxis install --host qoder
npx @ouonet/praxis install --host grok

Supported Hosts

• claude: Claude Code CLI
• codex: Codex CLI / App
• opencode: OpenCode
• antigravity (alias agy): Antigravity CLI / AGY
• pi: pi CLI
• omp (alias oh-my-pi): Oh My Pi
• qoder (alias qoderclicn): Qoder CLI CN
• copilot: GitHub Copilot CLI
• grok (aliases grok-cli, xai-grok): Grok CLI — rules copy injects using-praxis (SessionStart stdout is ignored)
• agents (alias generic): Generic Agent workspace following the .agents specification
• all: Install to all supported AI hosts

Installation Scopes

• user / global (default across all commands and directories): Global user home scope (e.g. ~/.claude, ~/.codex, ~/.gemini/config, ~/.omp, ~/.qoder-cn), available across all workspaces.
• project: Project-level scope tracked in git (e.g. opencode.json, .agents/skills/, .claude/settings.json), shared with the team.
• local: Workspace-local scope, active in the current directory without modifying shared repo manifests.

Management Commands

# Update Praxis across hosts
npx @ouonet/praxis update --host all

# Uninstall Praxis
npx @ouonet/praxis uninstall --host opencode --scope project

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Method 2: Native Host Installation

You can also install Praxis directly via each host's native commands or configuration files:

Claude Code

claude plugins marketplace add ouonet/praxis
claude plugins install praxis

Codex

Configure in .codex/config.toml:

[plugins."praxis@git+https://github.com/ouonet/praxis.git"]
enabled = true

OpenCode

Configure in opencode.json:

{
  "plugin": ["praxis@git+https://github.com/ouonet/praxis.git"]
}

Antigravity CLI (AGY)

agy plugin install https://github.com/ouonet/praxis

pi CLI

# Global install
pi install git:github.com/ouonet/praxis

# Project scope (writes to .pi/settings.json)
pi install -l git:github.com/ouonet/praxis

Oh My Pi (omp)

omp plugin add https://github.com/ouonet/praxis

Qoder CLI CN

Add plugin.json under .qoder-plugin in the project root, or configure globally under ~/.qoder-cn/plugins/.

Grok CLI

Native plugin install does not inject using-praxis (SessionStart stdout is ignored). Prefer the Praxis CLI so rules/praxis.md is copied.

grok plugin marketplace add ouonet/praxis
grok plugin install praxis --trust

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Install from a branch

To try an unreleased or experimental branch:

# Via CLI
npx @ouonet/praxis install --host claude --ref <branch>
npx @ouonet/praxis install --host opencode --ref <branch>

Or natively:

• Claude Code: claude plugins marketplace add ouonet/praxis#<branch> then claude plugins install praxis
• pi CLI: pi install git:github.com/ouonet/praxis@<branch>
• OpenCode: "plugin": ["praxis@git+https://github.com/ouonet/praxis.git#<branch>"]

---

Verify

Start a fresh session and send:

fix the typo "teh" in README

Expected output: praxis: scope=trivial, loading= — and the agent just fixes it. No design doc, no plan, no ceremony.

Then send:

add OAuth login with GitHub

Expected: praxis: scope=standard, loading=design,plan,tdd,review — the agent starts asking clarifying questions before touching code.

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Model Tiers Configuration (Optional)

When dispatching parallel subagents (subagents) or spec reviewers (design gate), Praxis assigns task capability tiers (fast, balanced, strongest).

Create .praxis/model-tiers.yaml in your project root or home directory to map tiers to concrete models:

fast: claude-3-5-haiku
balanced: claude-3-7-sonnet
strongest: claude-3-7-sonnet

If no configuration file exists, all subagents default to the harness default model.