Gemini CLI¶

Gemini CLI supports extensions that bundle MCP servers, slash commands, and skills together.

Install as an extension¶

gemini extensions install https://github.com/pauldatta/gemini-code-assist-admin-mcp

This installs the MCP server, registers the custom /gca:* slash commands, and makes the workspace skill available.

Custom slash commands¶

Once installed, the following /gca:* commands are available directly in the Gemini CLI chat:

Command	What it does
`/gca:status`	Check GCA API enablement and IAM status
`/gca:admin`	Verify your admin permissions
`/gca:metrics`	Show usage metrics (defaults to last 28 days)
`/gca:create_index`	Create a new code repository index
`/gca:create_group`	Create a repository group
`/gca:list_groups`	List all repository groups
`/gca:delete_group`	Delete a repository group
`/gca:grant_access`	Grant a user access to a repository group
`/gca:revoke_access`	Revoke a user's access from a repository group

Manual MCP config¶

If you prefer to configure it manually, add to your Gemini CLI settings.json:

{
  "mcpServers": {
    "gemini-code-assist-admin": {
      "command": "npx",
      "args": ["-y", "gemini-code-assist-admin-mcp"]
    }
  }
}

GEMINI.md¶

The repo includes a GEMINI.md file that provides Gemini CLI with workspace-level context when you open this directory — tool descriptions, architecture notes, and example prompts are automatically surfaced.

Example session¶

> /gca:status

Checking GCA status for project my-org-prod...
✅ Gemini Code Assist API (cloudaicompanion.googleapis.com) is ENABLED
✅ You have roles/cloudaicompanion.admin