Spanner Agent Skills
[!NOTE]
Currently in beta (pre-v1.0), and may see breaking changes until the first stable release (v1.0).
This repository provides a set of agent skills to interact with Google Cloud Spanner instances. These skills can be used with various AI agents, including Antigravity, Claude Code and Codex, to manage your databases, execute queries, explore schemas, and troubleshoot issues using natural language prompts.
[!IMPORTANT]
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Table of Contents
Why Use Spanner Agent Skills?
- Seamless Workflow: Integrates seamlessly into your AI agent's environment. No need to constantly switch contexts for common database tasks.
- Natural Language Queries: Stop wrestling with complex commands. Explore schemas and query data by describing what you want in plain English.
- Full Lifecycle Control: Manage your Spanner databases, from exploring schemas to running queries.
- Code Generation: Accelerate development by asking your agent to generate data classes and other code snippets based on your table schemas.
Prerequisites
Before you begin, ensure you have the following:
- One of these AI agents installed
- A Google Cloud project with the Spanner API enabled.
- Ensure Application Default Credentials are available in your environment.
- IAM Permissions:
- Cloud Spanner Database Reader (
roles/spanner.databaseReader)
- Cloud Spanner Database User (
roles/spanner.databaseUser)
Getting Started
Configuration
Please keep these env vars handy during the installation process:
SPANNER_PROJECT: The GCP project ID.SPANNER_INSTANCE: The Spanner instance ID.SPANNER_DATABASE: The Spanner database ID.SPANNER_DIALECT: (Optional) The SQL dialect of the Spanner Database: 'googlesql' or 'postgresql'. Defaults to "googlesql".
[!NOTE]
Installation & Usage
To start interacting with your database, install the skills for your preferred AI agent, then launch the agent and use natural language to ask questions or perform tasks.
For the latest version, check the releases page.
Antigravity
You can use either of these two agents for Antigravity:
💡 Tip — Migrating from Gemini CLI?
If you previously installed this extension with gemini extensions install, you can convert it to an Antigravity plugin instead of reinstalling from scratch:
- On first launch of Antigravity CLI, accept the Migration Options prompt to automatically convert your installed Gemini CLI extensions to Antigravity plugins.
- Or, from your terminal, run:
agy plugin import gemini
See Migrating from Gemini CLI for details on plugins, context files (GEMINI.md / AGENTS.md), and MCP server config differences.
Antigravity 2.0 (IDE)
1. Clone the Repo:
git clone --branch 0.3.1 https://github.com/gemini-cli-extensions/spanner.git
