Gemini / Antigravity Integration: Run Your Validated Playbook Through Google's Coding Agent

What Antigravity / Gemini does

Antigravity is Google’s coding agent IDE, built around Gemini. It lives somewhere between Cursor (IDE-native) and Claude Code (terminal-first): GUI but more agentic, willing to ship multi-file diffs and run long-form workflows in one shot.

Antigravity reads project-level context on session start and uses it as system prompt for every Gemini conversation. Gemini’s 1M+ token context window means you can load the entire validated playbook without worrying about cost or context budget.

What ShipFit ships to Antigravity

When you reach stage 9 (What to Export?) and pick Gemini / Antigravity, the export takes the validated playbook produced by the previous 8 stages and lands it in your repo as Antigravity configuration:

1. Buyer persona from stage 2 (Who Pays?).
2. Above-the-line pains from stage 3 (What Hurts?).
3. Winning angle from stage 4 (How to Win?), tied to the 7 Powers call.
4. V1 scope from stage 5 (What’s V1?). Differentiator + Operational; Delights held back for V2.
5. Pricing model from stage 6 (How to Charge?).
6. Launch plan from stage 8 (How to Launch?).

ShipFit also installs project-level shortcuts that re-apply the framework gates during development, so the 1M-token context window is paired with actual scope discipline.

Install

After running stage 9, unzip the export into your repo root and commit. The next Antigravity / Gemini session loads the new context.

Why bother

Gemini’s strength is the context window. You can paste the entire validated playbook (and a chunk of your codebase) into a single prompt and ask the model to reason across both. The export makes that automatic: the playbook is always in context, you don’t pay for the paste, and the agent’s responses cascade from your validated decisions instead of guesswork.

The big-context-window advantage compounds across long agent sessions. Where Cursor / Claude Code have to be more strategic about which context to load, Antigravity can keep all of it loaded for the lifetime of the project.

Common mistakes

1. Treating the export as a one-time setup. Re-export after any meaningful pivot.

2. Confusing the 1M context window with scope discipline. A loaded context doesn’t enforce scope on its own; the framework gates that ship with the export do.

Further reading

• Antigravity documentation, Google’s official guide.
• Cursor integration, for teams that prefer the more conventional IDE feel.
• Claude Code integration, terminal-native version of the same export.
• Validating a business idea with AI, the workflow this export plugs into.