KARTEイベントの件数を取得する。
AI agents call count_karte_events to retrieve information from Karte Datahub without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves event count statistics from KARTE event data, consistent with a Read operation. It queries and returns aggregate data without creating, modifying, deleting, or executing arbitrary code. The blast radius is minimal—misuse would only expose event counts, not sensitive individual records. Severity is low because counts alone have limited exploitability compared to raw event data retrieval.
From the tool's definition Tool name 'count_karte_events' and description 'KARTEイベントの件数を取得する' (Get the count of KARTE events) indicate a retrieval/aggregation operation with no modification of data.
Attacks that exploit this kind of access
KARTEイベントの件数を取得する。. It is categorised as a Read tool in the Karte Datahub MCP Server, which means it retrieves data without modifying state.
Register the Karte Datahub MCP server in PolicyLayer and add a rule for count_karte_events: 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 Karte Datahub. Nothing to install.
count_karte_events 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 count_karte_events 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 count_karte_events. 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.
count_karte_events is provided by the Karte Datahub MCP server (yusukeyajima/karte-datahub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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