plugins_list

THE RISK

Low Risk

Why plugins_list needs a policy

This tool performs a read-only query of available plugins from a marketplace, returning informational metadata. It has no side effects, does not execute code or commands, does not modify or delete data, and does not involve financial transactions. The blast radius of misuse is minimal—an agent could only retrieve plugin information it should not access, which is a low-severity information disclosure risk.

From the tool's definition Tool description states it 'List[s] available SperaxOS plugins' and 'Returns plugins with their capabilities, categories, and metadata' — purely retrieval/query operations with no modification, deletion, or execution capabilities.

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

POLICY

How to control plugins_list

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 plugins_list:

policy.json

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

plugins_list 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 →

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 plugins_list

What does the plugins_list tool do? +

List available SperaxOS plugins from plugin.delivery marketplace. Returns plugins with their capabilities, categories, and metadata. 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 plugins_list? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for plugins_list: 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 plugins_list? +

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

Can I rate-limit plugins_list? +

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

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

plugins_list 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.

CHECK YOUR STACK →