supply_get_circulating

THE RISK

Low Risk

Why supply_get_circulating needs a policy

This tool retrieves real-time information about token circulating supply for SPA and USDs tokens. It performs a data query with no side effects, no code execution, no financial transactions, and no destructive operations. Even in a security context where an AI agent misuses this tool, the worst case is accessing public financial data, which poses minimal risk.

From the tool's definition Tool name 'supply_get_circulating' and description 'Get real-time circulating supply' indicate a query/retrieval operation with no data modification or execution.

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

POLICY

How to control supply_get_circulating

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 supply_get_circulating:

policy.json

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

supply_get_circulating 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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The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
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Rate Limiting MCP Tool Calls: A Practical Guide →
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FAQ

Questions about supply_get_circulating

What does the supply_get_circulating tool do? +

Get real-time circulating supply for SPA and USDs tokens. Circulating supply excludes locked tokens, treasury holdings, and burned tokens. 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 supply_get_circulating? +

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

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

Can I rate-limit supply_get_circulating? +

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

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

supply_get_circulating 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 →