execute_cql_query · Sketch Engine MCP Server MCP

WHAT IT DOES

What execute_cql_query does on Sketch Engine MCP Server

AI agents invoke execute_cql_query to trigger actions in Sketch Engine MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why execute_cql_query needs a policy

This tool runs arbitrary CQL queries against a linguistics corpus. While CQL is domain-specific (not general shell code), it can perform complex operations on the database whose effects depend entirely on the query arguments provided by an AI agent. An agent could construct malformed, resource-intensive, or unintended queries that consume computational resources or expose sensitive linguistic data patterns.

From the tool's definition Tool name 'execute_cql_query' and description states 'Execute arbitrary CQL (Corpus Query Language) queries' — the word 'execute' combined with 'arbitrary' queries indicates code/command execution against a corpus database.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

execute_cql_query Rate-limited

execute_cql_query stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "execute_cql_query": {
      "limits": [
        {
          "counter": "execute_cql_query_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Sketch Engine MCP Server, so you can run agents against it safely.

FAQ

Questions about execute_cql_query

What does the execute_cql_query tool do? +

Execute arbitrary CQL (Corpus Query Language) queries. Documentation: https://www.sketchengine.eu/documentation/corpus-querying/. Use. It is categorised as a Execute tool in the Sketch Engine MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on execute_cql_query? +

Register the Sketch Engine MCP Server MCP server in PolicyLayer and add a rule for execute_cql_query: 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.

What risk level is execute_cql_query? +

execute_cql_query is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit execute_cql_query? +

Yes. Add a rate_limit block to the execute_cql_query 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 execute_cql_query completely? +

Set action: deny in the PolicyLayer policy for execute_cql_query. 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 execute_cql_query? +

execute_cql_query 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.