Get the detailed schema for a specific BigQuery table.
AI agents call get_bigquery_schema to retrieve information from GCP Sales Analytics MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema information (column names, data types, constraints) from BigQuery tables. It has no side effects, performs no data modifications, executes no code, and does not delete or move data. It is purely informational, making it a Read category tool. Severity is low because schema disclosure alone poses minimal risk — it exposes structural information but not sensitive data values.
From the tool's definition Tool name and description indicate 'Get the detailed schema for a specific BigQuery table' — a read-only operation that retrieves metadata about table structure without modifying or executing operations.
Attacks that exploit this kind of access
Get the detailed schema for a specific BigQuery table. It is categorised as a Read tool in the GCP Sales Analytics MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GCP Sales Analytics MCP Server MCP server in PolicyLayer and add a rule for get_bigquery_schema: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches GCP Sales Analytics MCP Server. Nothing to install.
get_bigquery_schema is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_bigquery_schema rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_bigquery_schema. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_bigquery_schema is provided by the GCP Sales Analytics MCP Server MCP server (miames/gcp_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_bigquery_schema is one line of GCP Sales Analytics MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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