portfolio_get_value | PolicyLayer

WHAT IT DOES

What portfolio_get_value does on Sperax Ecosystem Crypto & DeFI MCP Server

AI agents call portfolio_get_value to retrieve information from Sperax Ecosystem Crypto & DeFI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why portfolio_get_value needs a policy

This tool performs a read-only operation that queries and returns portfolio valuation data. It has no side effects, does not modify blockchain state, does not execute transactions, and does not move funds. The user's portfolio value is fetched and returned for informational purposes only, making it a straightforward Read operation with minimal risk.

From the tool's definition Tool name 'portfolio_get_value' and description 'Get the estimated total USD value of a user' indicate a query operation that retrieves portfolio data without modification or execution of transactions.

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

POLICY

How to control portfolio_get_value

PolicyLayer is an MCP gateway — it sits between your AI agents and Sperax Ecosystem Crypto & DeFI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for portfolio_get_value:

policy.json

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

portfolio_get_value 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 Sperax Ecosystem Crypto & DeFI 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 →

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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 portfolio_get_value

What does the portfolio_get_value tool do? +

Get the estimated total USD value of a user\. It is categorised as a Read tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on portfolio_get_value? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for portfolio_get_value: 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 Sperax Ecosystem Crypto & DeFI MCP Server. Nothing to install.

What risk level is portfolio_get_value? +

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

Can I rate-limit portfolio_get_value? +

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

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

portfolio_get_value is provided by the Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sperax Ecosystem Crypto & DeFI MCP Server tool call.

Start from Sperax Ecosystem Crypto & DeFI 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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1318 Sperax Ecosystem Crypto & DeFI MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.