See how a group of pages performs as a whole. Aggregates clicks, impressions, CTR, and position for all pages matching a URL path pattern, plus top pages and queries.
AI agents call gsc_topic_cluster to retrieve information from BigQuery MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and aggregates existing Google Search Console and analytics metrics without any side effects. It returns read-only performance data (clicks, impressions, CTR, position) for pages matching a pattern. There is no data modification, deletion, code execution, or financial impact.
From the tool's definition Tool description states it 'See[s] how a group of pages performs' and 'Aggregates clicks, impressions, CTR, and position' — purely retrieval and analysis of existing analytics data. No creation, modification, deletion, or execution of external operations.
Documented attack patterns abuse exactly the kind of access gsc_topic_cluster gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and BigQuery MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for gsc_topic_cluster:
{
"version": "1",
"default": "deny",
"tools": {
"gsc_topic_cluster": {}
}
}gsc_topic_cluster is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
See how a group of pages performs as a whole. Aggregates clicks, impressions, CTR, and position for all pages matching a URL path pattern, plus top pages and queries. It is categorised as a Read tool in the BigQuery MCP Server MCP Server, which means it retrieves data without modifying state.
Register the BigQuery MCP Server MCP server in PolicyLayer and add a rule for gsc_topic_cluster: 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 BigQuery MCP Server. Nothing to install.
gsc_topic_cluster 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 gsc_topic_cluster 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 gsc_topic_cluster. 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.
gsc_topic_cluster is provided by the BigQuery MCP Server MCP server (suganthan-mohanadasan/suganthans-bigquery-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 32 BigQuery MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
32 BigQuery MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.