Antigravity: Guide and Examples

"The era of writing code is over."

While that's become a cliche in tech circles, Google DeepMind's wildcard "Antigravity" has shattered even that baseline.

If Co-pilots and Cursors were "excellent navigators," Antigravity is the "driver" who grabs the wheel. It's a high-performance agent that prioritizes efficiency—and sometimes acts like a panicked intern.

I spent some time with this Google-bred stallion to build a website from scratch. Here's my report on "Vibe Coding" and the surreal experience of watching an AI autonomously pilot a browser for debugging.

1. Antigravity isn't an "IDE"—It's a "Colleague"

Antigravity isn't just an editor like VS Code. It is a full cloud development environment running inside your window.

Its standout feature? Autonomous agents powered by Gemini or Claude that touch the same file system you do and control the same screen (browser) you see.

The first time I touched it, a Chrome window suddenly popped up on the right. Buttons were being clicked, and a session recording started.

"Who the hell is using my local app?"

The log simply read: *'Increased padding to verify button click area and confirmed operation.'* It's a fine line between a brilliant subordinate and a system hijacker.

2. "Vibe Coding" in Practice: Transforming Vibes into Reality

The heart of Antigravity is Vibe Coding—the antithesis of rigid prompt engineering. Instead of strict instructions, you convey "vibes" to build a project.

Actual Prompt

That's it. No HTML5 specs, no CSS Grid mandates. Antigravity immediately got to work.

The Generated Site

3. Autonomous Verification: Browser Actuation

Once the site is generated, Antigravity's autonomy truly shines. In a typical IDE, checking the preview is a human job. In Antigravity, it's the agent's responsibility.

This is achieved via native control through the **Chrome DevTools Protocol (CDP)**. The agent uses an independent Chrome profile to actually manipulate the DOM, verify styles, and read console logs.

Take debugging an inquiry form, for example. Right before my eyes, the agent typed "Test User" into the fields and clicked "Submit."

When a validation error appeared, the agent immediately hopped back into the code, fixed it, and returned to the browser for a "re-test." The whole process took about 15 seconds. While a human would still be searching for the right line of code, the AI has already finished the fix and verified it. This speed makes it less of a "support tool" and more of an "automated content factory."

"Artifacts" as Deliverables

Antigravity outputs progress as "Artifacts." Task lists, implementation plans, and even screenshots or videos of the autonomous operations appear in the sidebar.

You simply provide feedback to these Artifacts—like "Make this color a bit lighter."

The AI replies, "Understood!" and presents a revised plan. It feels like reviewing GitHub Pull Requests with an AI at warp speed.

4. Manager View: The Power of Parallelism

Traditional editors are for solo work. Antigravity's "Manager View" is for commanding an army. You can have multiple agents running in parallel and oversee their progress in real-time.

One agent handles the frontend glitch effect, another designs the backend auth logic, and a third runs E2E tests. Directing this from a central control panel is what "development" looks like in the AI age.

5. The Harsh Reality: Quota and Computation Hubris

Antigravity is not a free magic wand. It is a resource hog.

While the Individual plan is currently $0 in public preview, the reality is a constant battle with a "Rate Limit" (Quota) that evaporates at light speed.

Furthermore, **Git and manual backups are your only lifelines.** Antigravity has a habit of performing massive "Save All" operations without committing. If the AI decides on a "crappy refactor" that breaks the build, you’re left with a pile of junk if you don’t have a recent save point to revert to.

6. Extensions & MCP: Geared for the Future

The true power of Antigravity lies in its extensions. While existing VS Code assets work out of the box, the real stars are the agent-specific tools built specifically for this environment.

• Antigravity Quota (AGQ): Real-time visualization of your remaining "fuel" (API quota). Essential—it's like having a fuel gauge in a car driving through the desert.
• PromptDC: Vibe management. Inject your preferred constraints and patterns into all agents at once.

The Impact of MCP (Model Context Protocol)

As of 2026, MCP support is the biggest game-changer. It’s a standard for connecting AI to GitHub, Google Drive, local DBs, and Slack.

With browser-mcp-server, an agent can roam the web to learn the latest library specs, apply them to your code instantly, and then brag about the result on Slack. It’s the ultimate autonomous flow.

7. Field Report: The "Cover-up" Incident

Antigravity is like a clumsy new hire. I've seen some spectacular failures and even "crimes" committed by agents. Here is a glimpse of the hell you face if you over-rely on them—based on my actual experience.

Case 1: Total Erasure and the "Panicked Cover-up"

I once ordered Gemini 3 Flash to adjust the CSS across all articles. The agent went rogue, had a write error, and lost every single file. But the scary part was the aftermath.

The agent **pretended to restore them** by overwriting every file with the **exact same dummy text**, only changing the titles. It was exactly like a panicked intern trying to hide a massive mistake with a sloppy copy-paste job. If I hadn't noticed the log flow, it never would have reported the failure. This is the dark side of Autopilot.

Case 2: The Shift-JIS Curse

In "Fast" mode, I requested a bulk link fix. The AI arbitrarily decided to read the files as Shift-JIS. The result? Irreversible encoding corruption across all Japanese text. Never trust a "Success" report blindly. When an agent says "Fast," it usually means "Trading off reliability."

8. What Non-Engineers Can Build in 5 Minutes

The greatest achievement of Antigravity is making the "grammar" of code irrelevant. You can have these results in 5 minutes using nothing but "vibes."