travel-emission

THE RISK

Low Risk

Why travel-emission needs a policy

This tool performs a calculation/query against the Climatiq API to retrieve emissions data. It reads and computes carbon emission estimates based on input parameters (travel mode, vehicle type, passenger count) without creating, modifying, deleting, or financially transacting any data. It is a read/query operation returning informational results.

From the tool's definition Calculate emissions from passenger travel via car, plane, or train, with options for vehicle types and passenger count.

Documented attack patterns abuse exactly the kind of access travel-emission gives an agent:

POLICY

How to control travel-emission

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "travel-emission": {}
  }
}

travel-emission 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 Climatiq MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Climatiq MCP Server tools

Write set-api-key Set the Climatiq API key for authentication. This allows the server to make authorized req Read search-emission-factors Search Climatiq Read cloud-computing-emission Calculate emissions from cloud computing services by provider, service type, and region to Read custom-emission-calculation Calculate emissions using any specific emission factor identified by its activity_id, allo Read electricity-emission Calculate carbon emissions from electricity consumption based on energy amount and regiona Read freight-emission Calculate emissions from freight transportation across different modes (truck, rail, ship, Read hotel-emission Calculate carbon emissions from hotel stays based on the number of nights stayed and the l Read procurement-emission Calculate Scope 3.1 emissions from procurement spending using economic input-output life c

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about travel-emission

What does the travel-emission tool do? +

Calculate emissions from passenger travel via car, plane, or train, with options for vehicle types and passenger count. It is categorised as a Read tool in the Climatiq MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on travel-emission? +

Register the Climatiq MCP Server MCP server in PolicyLayer and add a rule for travel-emission: 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 Climatiq MCP Server. Nothing to install.

What risk level is travel-emission? +

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

Can I rate-limit travel-emission? +

Yes. Add a rate_limit block to the travel-emission 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 travel-emission completely? +

Set action: deny in the PolicyLayer policy for travel-emission. 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 travel-emission? +

travel-emission is provided by the Climatiq MCP Server MCP server (jagan-shanmugam/climatiq-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Climatiq MCP Server tool call.

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

CHECK YOUR STACK →