MCPModel Context ProtocolAI agentstolls

Tolls MCP: connect AI agents to the Tolls Calculator API

How an MCP server exposes toll calculation to agents like Claude Desktop and Cursor, setup config, tools, and honest security limits.

By Jorge Parada, CTO de Cargoffer

Tolls MCP: connect AI agents to the toll API

Direct answer: MCP (Model Context Protocol) lets an AI client call external tools. Cargoffer documents the server package @cargoffer/mcp-server-transcend: the agent (Claude Desktop, Cursor or other MCP client) asks for routes, tolls and costs, and the local server executes the real calls against the Tolls Calculator API with your local key. One setup, works across MCP clients.

How it works

The client launches npx -y @cargoffer/mcp-server-transcend@latest; the server authenticates with your environment API key and exposes tools (the corpus documents calculate_route-style route/toll tools); the agent decides when to call them and formats the API's per-section answer.

Setup

Claude Desktop: add an mcpServers entry in claude_desktop_config.json with command: npx, args -y @cargoffer/mcp-server-transcend@latest and the key in env. Cursor: Settings → Features → MCP → Add New MCP Server with the same command. Full guides: Claude Desktop, Cursor.

MCP vs Actions vs function calling

MCP keeps the key on your machine and covers all MCP clients; a ChatGPT custom GPT needs no install but registers the key on the platform; function calling gives full control but is your code. See ChatGPT and Gemini.

Verify exact package name and version on the public npm registry before deploying; amounts always come from live API responses.

Frequently asked questions

What is a tolls MCP server?
A Model Context Protocol server exposing the toll API calls as tools for AI agents (Claude Desktop, Cursor, etc.).
Which package implements it?
The corpus documents @cargoffer/mcp-server-transcend run via npx; confirm the exact name and version on npm before production.
Where is the API key with MCP?
In the local MCP client configuration (environment variable on your machine), not registered with the model platform.

Related resources

Toll API: integrate toll calculation into your softwareToll calculator: how to work out the toll cost of a route

Ready to calculate tolls with live data?

Try the calculatorSee plans and API