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How do I install Design Arc and begin my first review?
Design Arc is one product available for three platforms. Choose the edition for the place where you already work.
Codex is the Live edition. Claude Code and Google Antigravity are Alpha editions. They use the same methodology, but their newer platform adapters are still maturing.
| Option | What you need |
|---|---|
| Guidelines only | No paid external research service required |
| Guidelines + Benchmarks | Mobbin Pro recommended for an individual |
| Codex screens | No Stitch connection required |
| Stitch or Both | Google Stitch account and API key |
External pricing, availability, and quotas may change. Design Arc links to the current provider pages rather than hard-coding prices.
Install the Live Codex edition from the OpenAI Plugin Directory.
GitHub remains the public source and fallback Codex marketplace. If you need that route, paste this into Codex:
Install the Design Arc plugin from https://github.com/friedbeef1/design-arc
No Python knowledge is required. The AI coding platform may ask for download permission.
Paste this into Claude Code:
Add the Design Arc marketplace from https://github.com/friedbeef1/design-arc and install Design Arc.
Paste this into Google Antigravity Desktop:
Install Design Arc globally from https://github.com/friedbeef1/design-arc
You do not need Antigravity CLI for Desktop use. Antigravity may ask permission to download the repository and place its skills/design-arc package in the global skills directory. The Google Antigravity guide gives the exact destination and the optional CLI route.
The Codex, Claude Code, and Google Antigravity editions are installed independently, but use the same Design Arc methodology. They are not different products. Choose the runtime page for the AI coding platform for installation, saved state, and returning later. Read Design Arc for Codex, Design Arc for Claude Code, or Design Arc for Google Antigravity.
Open your product project and say something ordinary, such as:
Use Design Arc to help me improve our onboarding.
Or:
Use Design Arc to review why customers abandon checkout.
You do not need to remember a command. Design Arc guides setup in plain language the first time a project uses it. It then confirms the outcome you want before inspecting or recommending anything.
Design Arc:
- Confirms what you are trying to accomplish.
- Asks whether to use product benchmarks or official guidance only.
- Audits the current journey and recommends a design direction.
- Pauses for the approvals required by your chosen mode.
- Visualizes and validates every important state before handoff.
Technical commands and troubleshooting live in Advanced controls.
Next: Using Design Arc.