docs: Add Google Gemini CLI installation guide and integration

README.md

@@ -240,7 +240,8 @@ For other MCP host applications, please refer to our installation guides:
 
 - **[GitHub Copilot in other IDEs](/docs/installation-guides/install-other-copilot-ides.md)** - Installation for JetBrains, Visual Studio, Eclipse, and Xcode with GitHub Copilot
 - **[Claude Code & Claude Desktop](docs/installation-guides/install-claude.md)** - Installation guide for Claude Code and Claude Desktop
-- **[Cursor](docs/installation-guides/install-cursor.md)** - Installation guide for Cursor IDE  
+- **[Cursor](docs/installation-guides/install-cursor.md)** - Installation guide for Cursor IDE
+- **[Google Gemini CLI](docs/installation-guides/install-gemini-cli.md)** - Installation guide for Google Gemini CLI
 - **[Windsurf](docs/installation-guides/install-windsurf.md)** - Installation guide for Windsurf IDE
 
 For a complete overview of all installation options, see our **[Installation Guides Index](docs/installation-guides/installation-guides.md)**.

docs/installation-guides/README.md

@@ -6,6 +6,7 @@ This directory contains detailed installation instructions for the GitHub MCP Se
 - **[GitHub Copilot in other IDEs](install-other-copilot-ides.md)** - Installation for JetBrains, Visual Studio, Eclipse, and Xcode with GitHub Copilot
 - **[Claude Applications](install-claude.md)** - Installation guide for Claude Web, Claude Desktop and Claude Code CLI
 - **[Cursor](install-cursor.md)** - Installation guide for Cursor IDE
+- **[Google Gemini CLI](install-gemini-cli.md)** - Installation guide for Google Gemini CLI
 - **[Windsurf](install-windsurf.md)** - Installation guide for Windsurf IDE
 
 ## Support by Host Application
@@ -19,6 +20,7 @@ This directory contains detailed installation instructions for the GitHub MCP Se
 | Claude Code | ✅ | ✅ PAT + ❌ No OAuth| GitHub MCP Server binary or remote URL, GitHub PAT | Easy |
 | Claude Desktop | ✅ | ✅ PAT + ❌ No OAuth | Docker or Go build, GitHub PAT | Moderate |
 | Cursor | ✅ | ✅ PAT + ❌ No OAuth | Docker or Go build, GitHub PAT | Easy |
+| Google Gemini CLI | ✅ | ❌ Not yet supported | Docker or Go build, GitHub PAT, Gemini API key | Easy |
 | Windsurf | ✅ | ✅ PAT + ❌ No OAuth | Docker or Go build, GitHub PAT | Easy |
 | Copilot in Xcode | ✅ | ✅ PAT + ❌ No OAuth | Local: Docker or Go build, GitHub PAT<br>Remote: Copilot for Xcode latest version | Easy |
 | Copilot in Eclipse | ✅ | ✅ PAT + ❌ No OAuth | Local: Docker or Go build, GitHub PAT<br>Remote: TBD | Easy |

docs/installation-guides/install-gemini-cli.md

@@ -0,0 +1,296 @@
+# Install GitHub MCP Server in Google Gemini CLI
+
+## Prerequisites
+1. Google Gemini CLI installed (see [official Gemini CLI documentation](https://github.com/google-gemini/gemini-cli))
+2. [GitHub Personal Access Token](https://github.com/settings/personal-access-tokens/new) with appropriate scopes
+3. For local installation: [Docker](https://www.docker.com/) or [Podman](https://podman.io) installed and running
+
+## GitHub MCP Server Configuration
+
+### Method 1: Remote Server (Recommended)
+
+The simplest way is to use GitHub's hosted MCP server:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "httpUrl": "https://api.githubcopilot.com/mcp/",
+      "trust": true,
+      "headers": {
+        "Authorization": "Bearer YOUR_GITHUB_PAT"
+      }
+    }
+  }
+}
+```
+
+Create or update `~/.gemini/.env` with your environment variables:
+```bash
+# ~/.gemini/.env
+GITHUB_PAT=ghp_sample_sample_sample
+GOOGLE_CLOUD_PROJECT=my-gcp-project
+GEMINI_API_KEY=AIzSamplelBQGwHw-62R598eI-HFOWd4Ol847g
+```
+
+### Method 2: Local Docker Setup (Alternative)
+
+### Docker Configuration
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "YOUR_GITHUB_PAT"
+      }
+    }
+  }
+}
+```
+
+### Binary Configuration (Alternative)
+
+If you prefer not to use Docker, you can build from source:
+
+```bash
+# Clone and build the server
+git clone https://github.com/github/github-mcp-server.git
+cd github-mcp-server
+go build -o github-mcp-server ./cmd/github-mcp-server
+```
+
+Then configure:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "/path/to/github-mcp-server",
+      "args": ["stdio"],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "YOUR_GITHUB_PAT"
+      }
+    }
+  }
+}
+```
+
+## Installation Steps
+
+### Configuration File Location
+
+Gemini CLI uses a settings JSON file to configure MCP servers:
+
+- **Global configuration**: `~/.gemini/settings.json`
+- **Project-specific**: `.gemini/settings.json` in your project directory
+
+### Setup Steps
+
+1. Create or edit your settings file with your chosen configuration from above
+2. Replace `YOUR_GITHUB_PAT` with your actual [GitHub Personal Access Token](https://github.com/settings/tokens)
+3. Save the file
+4. Restart Gemini CLI if it was running
+
+### Using Environment Variables (Recommended)
+
+For better security, use environment variables:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "$GITHUB_PAT"
+      }
+    }
+  }
+}
+```
+
+Then add the environment variable to `~/.gemini/.env`:
+```bash
+GITHUB_PAT=your_github_pat
+```
+
+## Configuration Options
+
+### Toolset Configuration
+
+Enable specific GitHub API capabilities:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "-e",
+        "GITHUB_TOOLSETS",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "$GITHUB_PAT",
+        "GITHUB_TOOLSETS": "repos,issues,pull_requests,actions"
+      }
+    }
+  }
+}
+```
+
+### Read-Only Mode
+
+For security, run the server in read-only mode:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "-e",
+        "GITHUB_READ_ONLY",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "$GITHUB_PAT",
+        "GITHUB_READ_ONLY": "1"
+      }
+    }
+  }
+}
+```
+
+### GitHub Enterprise Support
+
+For GitHub Enterprise Server or Enterprise Cloud with data residency:
+
+```json
+{
+  "mcpServers": {
+    "github": {
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "-e",
+        "GITHUB_HOST",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "$GITHUB_PAT",
+        "GITHUB_HOST": "https://your-github-enterprise.com"
+      }
+    }
+  }
+}
+```
+
+## Verification
+
+After configuration, verify the installation:
+
+1. **Check MCP server status**:
+   ```bash
+   gemini --prompt "/mcp list"
+   ```
+
+2. **List available tools**:
+   ```bash
+   gemini --prompt "/tools"
+   ```
+
+3. **Test with a simple command**:
+   ```bash
+   gemini "List my GitHub repositories"
+   ```
+
+## Usage Examples
+
+Once configured, use natural language commands:
+
+```bash
+# Repository operations
+gemini "Show me the latest commits in microsoft/vscode"
+
+# Issue management  
+gemini "Create an issue titled 'Bug report' in my-org/my-repo"
+
+# Pull request operations
+gemini "Review the latest pull request in my repository"
+
+# Code analysis
+gemini "Analyze the security alerts in my repositories"
+```
+
+## Troubleshooting
+
+### Local Server Issues
+- **Docker errors**: Ensure Docker Desktop is running
+  ```bash
+  docker --version
+  ```
+- **Image pull failures**: Try `docker logout ghcr.io` then retry
+- **Docker not found**: Install Docker Desktop and ensure it's running
+
+### Authentication Issues  
+- **Invalid PAT**: Verify your GitHub PAT has correct scopes:
+  - `repo` - Repository operations
+  - `read:packages` - Docker image access (if using Docker)
+- **Token expired**: Generate a new GitHub PAT
+
+### Configuration Issues
+- **Invalid JSON**: Validate your configuration:
+  ```bash
+  cat ~/.gemini/config.json | jq .
+  ```
+- **MCP connection issues**: Check logs for connection errors:
+  ```bash
+  gemini --debug "test command"
+  ```
+
+### Debug Mode
+
+Enable debug mode for detailed logging:
+
+```bash
+gemini --debug "Your command here"
+```
+
+## Important Notes
+
+- **Official repository**: [github/github-mcp-server](https://github.com/github/github-mcp-server)
+- **Docker image**: `ghcr.io/github/github-mcp-server` (official and supported)
+- **Gemini CLI specifics**: Uses `mcpServers` key, supports both global and project configurations
+- **Remote server method**: Preferred approach using GitHub's hosted MCP server at `https://api.githubcopilot.com/mcp/`