BigQuery Data Platform
Read-only BigQuery tools for plain-language data questions, with a cost gate on every query
The current version, v0.1.2, was published to the official MCP registry on 2026-09-02. It is distributed as data-platform-mcp on PyPI, filed under Databases by this index, and declares 10 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.
Using BigQuery Data Platform in Claude, Cursor, Gemini CLI, Cline, or Zed?
MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).
Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less
uv tool install mcpindex-gate && mcpindex-config-wireVerdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.
Own this server? Screen its description →
That verdict was true at screening time (snapshot 2026-09-02).
Contracts can change after screening, with no version bump. The gate pins BigQuery Data Platform’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.
See your first HOLD in 2 minutes →
Related: how to trust an MCP server · screen before install · silent contract drift
BQ_MCP_ENVIRONMENTSJSON map of environment name to BigQuery settings (project, location, impersonate, dataset_allowlist, byte caps). Omit when using a config file at ~/.config/data-platform-mcp/config.toml.
BQ_MCP_DEFAULT_ENVIRONMENTEnvironment used when a tool call omits the environment argument.
BQ_MCP_CONFIGPath to a TOML config file, overriding ~/.config/data-platform-mcp/config.toml.
BQ_IMPERSONATE_SERVICE_ACCOUNTRead-only service account to impersonate, making read-only a property of the identity rather than of this code. Create it with `data-platform-mcp setup`.
BQ_PROJECTGCP project whose BigQuery datasets are queried. Falls back to the project associated with Application Default Credentials.
BQ_LOCATIONBigQuery location for jobs and datasets. Defaults to US.
BQ_DATASET_ALLOWLISTComma-separated dataset IDs the server may read. Empty means all datasets.
BQ_WARN_BYTESScan size above which a query is returned for user confirmation instead of run. Defaults to 1 GiB.
BQ_MAX_BYTES_BILLEDHard per-query scan cap; a query estimated above this never runs. Defaults to 5 GiB.
BQ_MCP_AUDIT_LOGPath for the JSONL tool-call audit log, or 'off' to disable it. SQL text is never recorded, only a hash and a length.
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