analyzePeriodicReturns

THE RISK

Low Risk

Why analyzePeriodicReturns needs a policy

This tool queries and calculates performance metrics (daily/monthly returns) from historical account data. It performs read-only analysis without side effects, reversibility concerns, or financial transactions. The low severity reflects minimal risk even if misused by an agent—it only exposes performance data, not trading capabilities or account modifications.

From the tool's definition Tool name 'analyzePeriodicReturns' and description 'Analyze daily and monthly returns for a configured account' indicate data retrieval and analysis only. No creation, modification, deletion, or execution of trades/commands occurs.

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

POLICY

How to control analyzePeriodicReturns

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

policy.json

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

analyzePeriodicReturns 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 CCXT 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.

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EXPLORE

Related tools and policies

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All 20 CCXT MCP Server tools →

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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 analyzePeriodicReturns

What does the analyzePeriodicReturns tool do? +

Analyze daily and monthly returns for a configured account. It is categorised as a Read tool in the CCXT MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on analyzePeriodicReturns? +

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

What risk level is analyzePeriodicReturns? +

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

Can I rate-limit analyzePeriodicReturns? +

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

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

analyzePeriodicReturns is provided by the CCXT MCP Server MCP server (lazy-dinosaur/ccxt-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CCXT MCP Server tool call.

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

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