Get US Treasury yield curve (2Y-30Y maturities), 2s10s and 3m10y spreads, and inversion detection. Uses FRED or Yahoo Finance fallback.
AI agents call intel_yield_curve to retrieve information from Threat Intelligence MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns historical/current financial market data (yield curves, spreads, inversion status). It performs read-only data retrieval with no ability to execute trades, modify accounts, move money, or alter systems. While it provides financial market information, it is purely informational for analysis and monitoring—not a tool that commits financial obligations or executes transactions.
From the tool's definition Tool retrieves US Treasury yield curve data and spread calculations from FRED or Yahoo Finance. Keywords: 'Get', 'retrieves' - no modification, deletion, execution, or financial transaction capability.
Documented attack patterns abuse exactly the kind of access intel_yield_curve gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Threat Intelligence MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for intel_yield_curve:
{
"version": "1",
"default": "deny",
"tools": {
"intel_yield_curve": {}
}
}intel_yield_curve is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get US Treasury yield curve (2Y-30Y maturities), 2s10s and 3m10y spreads, and inversion detection. Uses FRED or Yahoo Finance fallback. It is categorised as a Read tool in the Threat Intelligence MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Threat Intelligence MCP Server MCP server in PolicyLayer and add a rule for intel_yield_curve: 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 Threat Intelligence MCP Server. Nothing to install.
intel_yield_curve is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the intel_yield_curve 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.
Set action: deny in the PolicyLayer policy for intel_yield_curve. 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.
intel_yield_curve is provided by the Threat Intelligence MCP Server MCP server (marc-shade/world-intel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Threat Intelligence MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
113 Threat Intelligence MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.