get_market_summary

THE RISK

Low Risk

Why get_market_summary needs a policy

This tool retrieves and queries real-time market summary statistics (trade volume, share volume, trade date) for informational purposes only. It has no side effects, does not modify data, execute commands, or commit financial transactions. The data returned is read-only market information. Classification as Read is appropriate with low severity due to its benign, informational nature.

From the tool's definition Tool name 'get_market_summary' and description 'Get the overall market summary including total trade volume, share volume, and trade date' indicates retrieval of aggregated market data with no modification, creation, or execution of operations.

Documented attack patterns abuse exactly the kind of access get_market_summary gives an agent:

POLICY

How to control get_market_summary

PolicyLayer is an MCP gateway — it sits between your AI agents and CSE MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_market_summary:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_market_summary": {}
  }
}

get_market_summary is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register CSE MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_market_summary

What does the get_market_summary tool do? +

Get the overall market summary including total trade volume, share volume, and trade date. It is categorised as a Read tool in the CSE MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_market_summary? +

Register the CSE MCP Server MCP server in PolicyLayer and add a rule for get_market_summary: 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 CSE MCP Server. Nothing to install.

What risk level is get_market_summary? +

get_market_summary is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_market_summary? +

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

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

get_market_summary is provided by the CSE MCP Server MCP server (shaveen12/cse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CSE MCP Server tool call.

Start from CSE MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →