Great Britain electricity grid carbon intensity (current half-hour) from National Grid ESO. Returns forecast + actual gCO2/kWh, qualitative index (very low…very high), and live generation mix by fuel. Free, CC BY / OGL. Grid-decarbonisation signal for energy/sustainability agents.
AI agents call energy.carbon-intensity-uk to retrieve information from Mcp 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 current electricity grid carbon intensity data from National Grid ESO. It performs a data retrieval operation with no capability to modify, delete, execute commands, or commit financial transactions. The data returned (carbon intensity metrics, forecasts, generation mix) is informational only.
From the tool's definition Tool returns read-only data: 'Returns forecast + actual gCO2/kWh, qualitative index (very low…very high), and live generation mix by fuel.' No side effects, modifications, or operations that affect external systems.
Attacks that exploit this kind of access
Great Britain electricity grid carbon intensity (current half-hour) from National Grid ESO. Returns forecast + actual gCO2/kWh, qualitative index (very low…very high), and live generation mix by fuel. Free, CC BY / OGL. Grid-decarbonisation signal for energy/sustainability agents. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for energy.carbon-intensity-uk: 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 Mcp. Nothing to install.
energy.carbon-intensity-uk 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 energy.carbon-intensity-uk 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 energy.carbon-intensity-uk. 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.
energy.carbon-intensity-uk is provided by the MCP server (@2sio/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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