vault_get_peg_status

THE RISK

Low Risk

Why vault_get_peg_status needs a policy

This tool retrieves and displays information about the peg status of the USDs stablecoin, historical stability metrics, and arbitrage opportunity data. It performs no writes, deletions, executions, or financial transactions. The data retrieved could inform trading decisions, but the tool itself only queries state without modifying it.

From the tool's definition Tool name 'vault_get_peg_status' and description 'Check USDs peg status relative to $1.00. Shows current deviation, historical stability, and arbitrage opportunities' indicates data retrieval only.

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

POLICY

How to control vault_get_peg_status

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 vault_get_peg_status:

policy.json

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

vault_get_peg_status 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.

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EXPLORE

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FAQ

Questions about vault_get_peg_status

What does the vault_get_peg_status tool do? +

Check USDs peg status relative to $1.00. Shows current deviation, historical stability, and arbitrage opportunities. 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 vault_get_peg_status? +

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

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

Can I rate-limit vault_get_peg_status? +

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

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

vault_get_peg_status 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 →