Gemini CLI / Antigravity

Gemini CLI / Antigravity

Gemini CLI is Google’s AI-powered command-line tool. Antigravity is Google’s VS Code fork with Gemini integration. Both tools share the same .gemini/ configuration format.

LNAI exports unified configuration to the native .gemini/ format, transforming settings and rules as needed.

Output Structure

AGENTS.md              # Symlink → .ai/AGENTS.md (at project root)

.gemini/
├── settings.json      # Generated (MCP servers + context.fileName)
├── skills/<name>/     # Symlinks → ../../.ai/skills/<name>/
└── <overrides>        # Symlinks from .ai/.gemini/

<dir>/GEMINI.md        # Generated (rules per directory)

File Mapping

Source	Output	Type
.ai/AGENTS.md	AGENTS.md at root	Symlink
.ai/AGENTS.md	.gemini/settings.json	context.fileName: ["AGENTS.md"]
.ai/rules/*.md	<dir>/GEMINI.md	Generated
.ai/skills/<name>/	.gemini/skills/<name>/	Symlink
.ai/settings.json	.gemini/settings.json	Transformed
.ai/.gemini/<path>	.gemini/<path>	Symlink

Transformations

Context

When AGENTS.md exists, LNAI configures Gemini CLI to read it via context.fileName in settings.json:

{
  "context": {
    "fileName": ["AGENTS.md"]
  }
}

This tells Gemini CLI to automatically include the root AGENTS.md file as context.

MCP Servers

HTTP/SSE servers use httpUrl instead of url:

// Input (LNAI format)
{
  "mcpServers": {
    "remote": {
      "url": "https://example.com/mcp"
    }
  }
}

// Output (Gemini format)
{
  "mcpServers": {
    "remote": {
      "httpUrl": "https://example.com/mcp"
    }
  }
}

LNAI	Gemini CLI
url	httpUrl

Rules

Rules are grouped by their target directory and combined into GEMINI.md files:

.ai/rules/typescript.md

paths:

- "src/\*_/_.ts"

---

Use strict TypeScript...

src/GEMINI.md

## typescript.md

Use strict TypeScript...

Rules targeting the project root (.) are placed at the root level. Rules targeting subdirectories (e.g., apps/cli/**) create GEMINI.md files in those directories.

Unsupported Features

Permissions

Gemini CLI does not support pre-configured permissions in settings.json. Permissions must be granted interactively when prompted during execution.

If your .ai/settings.json contains a permissions block, LNAI will display a warning but continue syncing other configuration.

Overrides

Place Gemini-specific files in .ai/.gemini/ to have them symlinked directly:

.ai/.gemini/
└── custom-config.json → .gemini/custom-config.json

When an override file exists at the same path as a generated file (e.g., settings.json), the override takes priority.