A Model Context Protocol server that provides access to BigQuery. This server enables LLMs to inspect database schemas and execute queries.
The server implements one tool:
execute-query
: Executes a SQL query using BigQuery dialectlist-tables
: Lists all tables in the BigQuery databasedescribe-table
: Describes the schema of a specific tableThe server can be configured either with command line arguments or environment variables.
Argument Environment Variable Required Description--project
BIGQUERY_PROJECT
Yes The GCP project ID. --location
BIGQUERY_LOCATION
Yes The GCP location (e.g. europe-west9
). --dataset
BIGQUERY_DATASETS
No Only take specific BigQuery datasets into consideration. Several datasets can be specified by repeating the argument (e.g. --dataset my_dataset_1 --dataset my_dataset_2
) or by joining them with a comma in the environment variable (e.g. BIGQUERY_DATASETS=my_dataset_1,my_dataset_2
). If not provided, all datasets in the project will be considered. --key-file
BIGQUERY_KEY_FILE
No Path to a service account key file for BigQuery. If not provided, the server will use the default credentials.
To install BigQuery Server for Claude Desktop automatically via Smithery:
npx -y @smithery/cli install mcp-server-bigquery --client claude
On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json
"mcpServers": { "bigquery": { "command": "uv", "args": [ "--directory", "{{PATH_TO_REPO}}", "run", "mcp-server-bigquery", "--project", "{{GCP_PROJECT_ID}}", "--location", "{{GCP_LOCATION}}" ] } }Published Servers Configuration
"mcpServers": { "bigquery": { "command": "uvx", "args": [ "mcp-server-bigquery", "--project", "{{GCP_PROJECT_ID}}", "--location", "{{GCP_LOCATION}}" ] } }
Replace {{PATH_TO_REPO}}
, {{GCP_PROJECT_ID}}
, and {{GCP_LOCATION}}
with the appropriate values.
To prepare the package for distribution:
Increase the version number in pyproject.toml
Sync dependencies and update lockfile:
This will create source and wheel distributions in the dist/
directory.
Note: You'll need to set PyPI credentials via environment variables or command flags:
--token
or UV_PUBLISH_TOKEN
--username
/UV_PUBLISH_USERNAME
and --password
/UV_PUBLISH_PASSWORD
Since MCP servers run over stdio, debugging can be challenging. For the best debugging experience, we strongly recommend using the MCP Inspector.
You can launch the MCP Inspector via npm
with this command:
npx @modelcontextprotocol/inspector uv --directory {{PATH_TO_REPO}} run mcp-server-bigquery
Upon launching, the Inspector will display a URL that you can access in your browser to begin debugging.
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