fuel_cost_calculator
Fuel needed and trip cost. system=metric: distance km, consumption L/100km. system=imperial: distance miles, consumption mpg. Runs on smart-tools.xyz.
This record as markdown: /tools/io-github-9thshini-smart-tools/fuel-cost-calculator.md
What fuel_cost_calculator does on SmartTools
AI agents invoke fuel_cost_calculator to trigger actions in SmartTools. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
locale | string | — | Language for the source_url link (default en) |
system | string | — | Unit system (default metric) |
distance | number | string | Yes | Trip distance |
fuel_price | number | string | Yes | Price per litre or per gallon |
consumption | number | string | Yes | L/100km (metric) or mpg (imperial) |
Parameters from the server's own tool schema.
Why fuel_cost_calculator is rated High
fuel_cost_calculator triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.
Attacks that exploit this kind of access
The rule that runs fuel_cost_calculator safely
PolicyLayer is an MCP gateway: it sits between your AI agents and SmartTools, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fuel_cost_calculator, this is the rule to start with:
fuel_cost_calculator stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect SmartTools, apply this rule, and every fuel_cost_calculator call is checked against it from then on.
Questions about fuel_cost_calculator
Fuel needed and trip cost. system=metric: distance km, consumption L/100km. system=imperial: distance miles, consumption mpg. Runs on smart-tools.xyz. It is categorised as a Execute tool in the SmartTools MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
fuel_cost_calculator accepts 5 parameters: locale, system, distance, fuel_price, consumption. Required: distance, fuel_price, consumption. The full parameter table on this page comes from the server's own tool schema.
Register the SmartTools MCP server in PolicyLayer and add a rule for fuel_cost_calculator: 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 SmartTools. Nothing to install.
fuel_cost_calculator is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the fuel_cost_calculator 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 fuel_cost_calculator. 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.
fuel_cost_calculator is provided by the SmartTools MCP server (https://smart-tools.xyz/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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