Antigravity Setup Guide: Installation and First Commands

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You can install Antigravity on Windows in a few minutes: download the EXE installer, log in with your Google account, add a folder as a project, and write your first command. The interface is in English, but you can chat with the agent in any language, and one rule ensures it always responds in your preferred language, including in plans and task lists. Below is the complete step-by-step path. For a full description of the tool, models, and pricing, see our Google Antigravity guide.

Which Version to Install

The download page offers three tools for daily work. One is enough to start.

We start with the 2.0 application because only it shows the full limit counter, and we install the IDE later when we need an editor.

Windows Installation Step by Step

1. Check your system. In Settings, System, About, you’ll find your system type. You need 64-bit Windows 10 or 11. On Snapdragon laptops, choose the ARM64 version; on others, x64.
2. Download the installer. Go to antigravity.google/download and download the EXE file for Windows.
3. Run the installer. If you have an older version and see “Keep Both” or “Replace,” choose Replace. You can postpone IDE installation for later.
4. Log in. Antigravity will open a browser with Google login. After logging in, return to the application. If login hangs, update the application - in version 2.16.0, Google fixed a bug with interrupted login after computer sleep.
5. Check for updates. Menu Help, Check for Updates.

Install CLI separately. In PowerShell, paste:

irm https://antigravity.google/cli/install.ps1 | iex

Then open a new terminal and type agy. On first run, you’ll choose colors, display mode, and confirm that you trust the folder you’re working in.

Login: Which Account to Use

• Account with a plan. If you have Google AI Pro or Ultra, log in with exactly that account. Antigravity remembers the account from first login, and on an account without a plan it counts free limits, without Claude 5.5.
• Personal account. Documentation advises trying an @gmail.com address if you have problems with a Workspace account.
• Age and country. Antigravity requires age 18, confirmed in Google account settings.
• Switching accounts. Since version 2.14.0, switching from a business to personal account works, which previously ended with a project access error.

Who has access to Claude in Antigravity is described in our article Claude Opus 5.5 and Sonnet 5.5 in Antigravity.

Your First Project

1. Create an empty folder, e.g., C:projectsfirst. The agent will only have access to folders added to the project.
2. In the left sidebar, click the folder icon with a plus and select New Project.
3. Click Add Folder, point to the folder, and click Create.
4. Choose work mode: Local (agent works directly in the folder) or New worktree (agent works in a separate Git working copy). Local is enough to start.
5. Type your first command. Google documentation suggests a simple Python script that fetches page text.

Before the first task, we leave security settings at default: the agent asks for permission before saving files and running commands (request-review mode) and always shows changes for review (asks-for-review).

How to Set Response Language

The agent responds in the language of the question, but in long work sessions it can switch to English, especially in plans and task lists. Therefore, we add a global rule:

1. In the agent panel, click the “…” menu at the top and select Customizations.
2. Go to the Rules tab and add a global rule. This goes into the GEMINI.md file in the .gemini directory in the user folder, so on Windows C:Usersusername.geminiGEMINI.md.
3. Enter the rule content and save.

Example rule for consistent language:

Always respond in the same language I use in my questions, including in plans, task lists, and summaries.
Write variable names, function names, and commit messages in English.
Write code comments in English.
Before changing more than 3 files, show a plan.

A rule for just one project is saved in the AGENTS.md or GEMINI.md file in the main project folder, or in the .agents/rules directory. A rule has a 24 KB limit per file, and all global and always-enabled rules share a 20,000 token budget, so keep them concise.

Is There Interface Localization

Not officially. In Antigravity 2.0 application settings, there is no language choice. Antigravity IDE is based on VS Code, so theoretically it accepts a language pack: in the command palette (Ctrl + Shift + P) there is Configure Display Language, and Microsoft’s official language packs are in the Open VSX registry (we checked October 3, 2026). Two caveats:

• language packs only translate elements from VS Code; the agent panel, artifacts, and Google settings remain in English;
• the pack must match the VS Code engine version in Antigravity IDE; we haven’t tested this, and we don’t install unofficial packs from GitHub.

In our opinion, setting the response language is more important than menu language. The English menu has a dozen items, but conversation with the agent is the entire workflow.

First 5 Commands

This is how we test a new tool on a small project. Each command teaches something different:

1. Recognition without changes: “Describe the structure of this project: where is the logic, configuration, and tests. Don’t change anything.”
2. Plan before code: “/plan Build a BMI calculator page in HTML and JavaScript, no libraries. The result should display immediately after entering data.” Read the plan, add notes, and click Proceed.
3. Browser check: “Open the page in a browser, enter 180 cm and 80 kg, take a screenshot, and verify the result is 24.7.”
4. Tests: “Write tests for the BMI calculation function, including for empty fields and zero, and run them.”
5. Limit status: in CLI /usage, in application Settings, Models. After the first tasks, you can see how much work costs on a given model. Details in our article Antigravity limits.

If you’re just starting to build applications with AI, also read vibe coding step by step and security vulnerabilities in vibe coding.

Common Problems

• I don’t see Claude 5.5. Check if you’re logged in with an account that has paid Google AI Pro or Ultra. Pro from a trial period doesn’t provide it.
• “agy” is not recognized. The CLI folder didn’t get added to the PATH variable. Open a new terminal, and if that doesn’t help, add C:Program FilesGoogleantigravity-cli to user PATH (the command is in CLI documentation, Troubleshooting section).
• Login doesn’t go through. Update the application, log in with a personal account instead of Workspace, and check if the Google account has confirmed age.
• “Model quota limit exceeded.” The 5-hour or weekly limit has been reached. Switch to another model or wait.
• Agent asks for permission on every command. This is the default mode. You can switch it to proceed-in-sandbox: commands in the sandbox execute automatically, the rest require permission. Sandbox works on Windows from version 2.15.1.
• Agent responds in English. Language rule is missing or the conversation is very long. Add the rule from the section above and start a new conversation.

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Sources

• Antigravity: download and requirements
• Antigravity: getting started
• Antigravity: rules
• Antigravity: settings and permissions
• Antigravity: /plan command
• Antigravity: FAQ (age, countries, accounts)
• Antigravity CLI: troubleshooting
• Antigravity: changelog
• Open VSX: Polish Language Pack for Visual Studio Code

Verified October 3, 2026.

Kinetyra