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Connects to Google Cloud Spanner to run SQL queries, inspect schema, and manage data across databases and instances. Requires Spanner project, instance, database, and dialect configuration.
Copy this JSON into your .mcp.json to enable this server
Add to your .mcp.json:
{
"mcpServers": {
"spanner": {
"command": "npx",
"args": [
"-y",
"@toolbox-sdk/server@>=1.1.0",
"--prebuilt",
"spanner",
"--stdio",
"--user-agent-metadata",
"datacloud.claude"
],
"env": {
"SPANNER_DIALECT": "",
"SPANNER_PROJECT": "${user_config.PROJECT_ID}",
"SPANNER_DATABASE": "",
"SPANNER_INSTANCE": ""
}
}
}
}Review these signals before enabling this server
This server connects to external services. Review the URLs it accesses before enabling.
Server configuration and connection parameters
npxCommand-line arguments passed to the server process
Environment variables set when the server starts
SPANNER_DIALECT=SPANNER_PROJECT=${user_config.PROJECT_ID}SPANNER_DATABASE=SPANNER_INSTANCE=npx claudepluginhub gemini-cli-extensions/data-agent-kit-starter-pack --plugin dak