BigQuery MCP server
A Model Context Protocol server that provides access to BigQuery. This server enables LLMs to inspect database schemas and execute queries.
Components
Tools
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 table
Configuration
The 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. |
--timeout |
BIGQUERY_TIMEOUT |
No | Maximum time in seconds to wait for a query to complete. If not provided, queries will wait indefinitely. |
