BigQuerySAFE
A Model Context Protocol server that provides access to BigQuery
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://smithery.ai/server/mcp-server-bigquery)
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.
d1d0b48b1498OBSERVED · 2026-10-07Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add mcp-server-bigquery --env BIGQUERY_KEY_FILE=${BIGQUERY_KEY_FILE} -- uvx mcp-server-bigquery{
"mcpServers": {
"mcp-server-bigquery": {
"command": "uvx",
"args": [
"mcp-server-bigquery"
],
"env": {
"BIGQUERY_KEY_FILE": "${BIGQUERY_KEY_FILE}"
}
}
}
}Exposed tools (3)
2 read · 1 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
describe-table | read | Get the schema information for a specific table |
execute-query | write | Execute a SELECT query on the BigQuery database |
list-tables | read | List all tables in the BigQuery database |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (0)
No findings outside the package's declared scope.
Gates applied: no_behavioural_pass.
d1d0b48b1498full audit observations/trust-audit/mcp-server/lucashild__bigquery.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-07 | d1d0b48b1498 | SAFE | B | 89 | first audit |
Questions
What is the BigQuery MCP server?
A Model Context Protocol server that provides access to BigQuery
What tools does BigQuery expose?
3 in total: 2 read-only, 1 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is BigQuery safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does BigQuery need?
It reads BIGQUERY_KEY_FILE from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does BigQuery run?
It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as mcp-server-bigquery.
How current is this page?
The grade is for one exact copy of the source (d1d0b48b1498), read on 2026-10-07. The repository is watched and re-audited when it changes.