cap_cql_query · Sflight MCP: Risk & Policy

WHAT IT DOES

What cap_cql_query does on Sflight

AI agents invoke cap_cql_query to trigger actions in Sflight. 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 cap_cql_query needs a policy

This tool executes arbitrary SQL queries against a database. While the database is described as in-memory SQLite with seed data, executing arbitrary SQL can include destructive operations (DROP, DELETE, UPDATE) or data exfiltration. The ability to run arbitrary SQL represents an Execute-level risk at minimum, with potential for Destructive operations depending on what SQL is permitted.

From the tool's definition Execute a SQL query against the CAP project database

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cap_cql_query Rate-limited

cap_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": {
    "cap_cql_query": {
      "limits": [
        {
          "counter": "cap_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 Sflight, so you can run agents against it safely.

FAQ

Questions about cap_cql_query

What does the cap_cql_query tool do? +

Execute a SQL query against the CAP project database (in-memory SQLite with all CSV seed data loaded). It is categorised as a Execute tool in the Sflight MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on cap_cql_query? +

Register the Sflight MCP server in PolicyLayer and add a rule for cap_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 Sflight. Nothing to install.

What risk level is cap_cql_query? +

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

Can I rate-limit cap_cql_query? +

Yes. Add a rate_limit block to the cap_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 cap_cql_query completely? +

Set action: deny in the PolicyLayer policy for cap_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 cap_cql_query? +

cap_cql_query is provided by the Sflight MCP server (mindsetconsulting/sflight-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.