run_query · Cryptosense MCP: Risk & Policy

WHAT IT DOES

What run_query does on Cryptosense

AI agents invoke run_query to trigger actions in Cryptosense. 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 run_query needs a policy

Despite the empty description, 'run_query' semantically indicates query execution rather than simple data retrieval. On a financial data server, this could execute complex queries whose effects depend on argument composition, making it Execute-category rather than Read. The high blast radius comes from potential query injection, data exfiltration of market data, or extraction of sensitive user financial information.

From the tool's definition Tool named 'run_query' with empty description on a crypto market intelligence server. 'run_query' typically executes arbitrary queries against a database or API, which is an Execute operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

run_query Rate-limited

run_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": {
    "run_query": {
      "limits": [
        {
          "counter": "run_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 Cryptosense, so you can run agents against it safely.

FAQ

Questions about run_query

What does the run_query tool do? +

run_query. It is categorised as a Execute tool in the Cryptosense MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_query? +

Register the Cryptosense MCP server in PolicyLayer and add a rule for run_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 Cryptosense. Nothing to install.

What risk level is run_query? +

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

Can I rate-limit run_query? +

Yes. Add a rate_limit block to the run_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 run_query completely? +

Set action: deny in the PolicyLayer policy for run_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 run_query? +

run_query is provided by the Cryptosense MCP server (josephibra/cryptosense-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.