get_treasury_yields

THE RISK

Low Risk

Why get_treasury_yields needs a policy

This tool queries and retrieves publicly available US Treasury yield curve data from the SEC EDGAR database. It performs a read-only operation with no capability to modify, delete, or execute external actions. The data retrieved is financial market information but the tool itself does not move money, execute trades, or commit financial obligations.

From the tool's definition Tool name is 'get_treasury_yields' and description states 'Get current US Treasury yield curve data' — a retrieval operation with no side effects.

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

POLICY

How to control get_treasury_yields

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

policy.json

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

get_treasury_yields 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 SEC MCP — 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 get_treasury_yields

What does the get_treasury_yields tool do? +

Get current US Treasury yield curve data. It is categorised as a Read tool in the SEC MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_treasury_yields? +

Register the SEC MCP server in PolicyLayer and add a rule for get_treasury_yields: 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 SEC MCP. Nothing to install.

What risk level is get_treasury_yields? +

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

Can I rate-limit get_treasury_yields? +

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

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

get_treasury_yields is provided by the SEC MCP server (luisrincon23/sec-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every SEC MCP tool call.

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

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