get_most_active_stocks

THE RISK

Low Risk

Why get_most_active_stocks needs a policy

This tool performs a straightforward data retrieval operation. It queries historical/current trading volume metrics and returns publicly available stock market information. There are no side effects, no data modification, no code execution, and no financial transactions involved.

From the tool's definition Tool retrieves 'top 10 most actively traded stocks by volume' - a query operation that reads and returns market data without modifying, deleting, or executing any state-changing operations.

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

POLICY

How to control get_most_active_stocks

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_most_active_stocks:

policy.json

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

get_most_active_stocks 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

Related tools and policies

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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_most_active_stocks

What does the get_most_active_stocks tool do? +

Get the top 10 most actively traded stocks by volume in the CSE for the current trading day. 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_most_active_stocks? +

Register the CSE MCP Server MCP server in PolicyLayer and add a rule for get_most_active_stocks: 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_most_active_stocks? +

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

Can I rate-limit get_most_active_stocks? +

Yes. Add a rate_limit block to the get_most_active_stocks 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_most_active_stocks completely? +

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

get_most_active_stocks 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 →