Signal 5: UK temperature vs seasonal norm from Open-Meteo.
AI agents call get_temperature_vs_norm 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 weather data (temperature deviation from seasonal average) from Open-Meteo. It performs a simple retrieval operation with no side effects—no data is created, modified, deleted, or executed. Even if an AI agent misuses this call, the worst outcome is obtaining inaccurate market insights, which poses minimal risk. Classification: Read/low severity.
From the tool's definition Tool name 'get_temperature_vs_norm' and description 'UK temperature vs seasonal norm from Open-Meteo' indicate data retrieval only.
Attacks that exploit this kind of access
Signal 5: UK temperature vs seasonal norm from Open-Meteo. 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_temperature_vs_norm: 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_temperature_vs_norm 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_temperature_vs_norm 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_temperature_vs_norm. 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_temperature_vs_norm 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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