Get frequency distribution for a query
AI agents call get_frequency_distribution to retrieve information from Sketch Engine 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 statistical frequency data from a corpus linguistics database. It has no capability to modify, delete, execute external code, or trigger financial transactions. The operation is purely informational and read-only, with minimal blast radius if an AI agent calls it with unexpected arguments—at worst, it returns unexpected frequency statistics or an error.
From the tool's definition Tool name 'get_frequency_distribution' and description 'Get frequency distribution for a query' indicate a retrieval operation. The 'get_' prefix and verb 'Get' confirm this is a read-only query against the Sketch Engine corpus.
Attacks that exploit this kind of access
Get frequency distribution for a query. It is categorised as a Read tool in the Sketch Engine MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Sketch Engine MCP Server MCP server in PolicyLayer and add a rule for get_frequency_distribution: 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 Sketch Engine MCP Server. Nothing to install.
get_frequency_distribution 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_frequency_distribution 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_frequency_distribution. 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_frequency_distribution is provided by the Sketch Engine MCP Server MCP server (riccap/sketch-engine-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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