Signal 3: NBP gas price (day-ahead proxy) from Yahoo Finance TTF front-month.
AI agents call get_nbp_gas_price to retrieve information from SIGNALS Market Readiness 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 retrieves financial market data (energy commodity pricing) without the ability to modify, execute code, or commit financial transactions. It is a passive read operation that returns information about market prices. While the data itself is financial in nature, the tool's action is purely informational retrieval, making it a Read category risk with low severity.
From the tool's definition Tool fetches NBP gas price data from Yahoo Finance TTF front-month without modification capabilities. Description indicates pure data retrieval: 'get_nbp_gas_price' retrieves a 'Signal' (market data point) with no write, execute, or destructive operations.
Attacks that exploit this kind of access
Signal 3: NBP gas price (day-ahead proxy) from Yahoo Finance TTF front-month. It is categorised as a Read tool in the SIGNALS Market Readiness MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SIGNALS Market Readiness MCP Server MCP server in PolicyLayer and add a rule for get_nbp_gas_price: 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 SIGNALS Market Readiness MCP Server. Nothing to install.
get_nbp_gas_price 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 get_nbp_gas_price 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 get_nbp_gas_price. 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.
get_nbp_gas_price is provided by the SIGNALS Market Readiness MCP Server MCP server (markloveridge-rex/signals-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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