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Developer integrates AI assistants with calculator tools via MCP server

A developer has created an MCP (Model Context Protocol) server using Cloudflare Workers to allow AI assistants like Claude to directly call external tools, rather than guessing at calculations. This server, built with JSON-RPC 2.0, is stateless and shares code with an existing calculator website, exposing 73 pure calculation and text-based tools. Each tool response includes a source URL for transparency and citation, but more complex tools requiring browser-side execution, such as image converters, could not be integrated. AI

IMPACT Enables AI assistants to reliably use external calculation tools, improving accuracy for complex queries.

RANK_REASON Developer describes a technical implementation of integrating AI with external tools using a specific protocol.

Read on dev.to — MCP tag →

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Developer integrates AI assistants with calculator tools via MCP server

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  1. dev.to — MCP tag TIER_1 English(EN) · Rhein ·

    I turned my calculator site into an MCP server so AI assistants stop guessing at math

    <p>Ask a language model to compute <code>2 + 3 * sqrt(16)</code> and it will usually get it right. Ask it for <code>1,000,000</code> seconds in days, or a compound-interest figure over 30 years, and it will answer with total confidence — and sometimes be quietly wrong. It's predi…