gcp_bq_update_table

Update a BigQuery table schema or metadata

SERVERGCP MCP Server SOURCEahmedselimmansor-ctrl/gcp_mcp_server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-bq-update-table.md

WHAT IT DOES

What gcp_bq_update_table does on GCP MCP Server

AI agents use gcp_bq_update_table to create or update resources in GCP MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GCP MCP Server environment.

RISK

Why gcp_bq_update_table is rated Medium

This tool creates or modifies data reversibly by updating table schemas and metadata in BigQuery. While it does not delete data, schema changes can have significant side effects on dependent queries and applications, and metadata updates affect how data is accessed and interpreted.

From the tool's definition Tool name 'gcp_bq_update_table' with description 'Update a BigQuery table schema or metadata' explicitly performs modification operations on table structures and metadata.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs gcp_bq_update_table safely

PolicyLayer is an MCP gateway: it sits between your AI agents and GCP MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For gcp_bq_update_table, this is the rule to start with:

gcp_bq_update_table Rate-limited

gcp_bq_update_table stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gcp_bq_update_table": {
      "limits": [
        {
          "counter": "gcp_bq_update_table_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect GCP MCP Server, apply this rule, and every gcp_bq_update_table call is checked against it from then on.

FAQ

Questions about gcp_bq_update_table

What does the gcp_bq_update_table tool do? +

Update a BigQuery table schema or metadata. It is categorised as a Write tool in the GCP MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gcp_bq_update_table? +

Register the GCP MCP Server MCP server in PolicyLayer and add a rule for gcp_bq_update_table: 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 MCP Server. Nothing to install.

What risk level is gcp_bq_update_table? +

gcp_bq_update_table is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit gcp_bq_update_table? +

Yes. Add a rate_limit block to the gcp_bq_update_table 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.

How do I block gcp_bq_update_table completely? +

Set action: deny in the PolicyLayer policy for gcp_bq_update_table. 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.

What MCP server provides gcp_bq_update_table? +

gcp_bq_update_table is provided by the GCP MCP Server MCP server (ahmedselimmansor-ctrl/gcp_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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