WASM MCP Server

Name: WASM MCP Server
Author: beekmarks

@beekmarks

About WASM MCP Server

A proof-of-concept implementation of a Model Context Protocol (MCP) server that runs in WebAssembly (WASM) within a web browser. This project demonstrates the integration of MCP tools and resources in a browser environment.

#mcp #wasm #model-context-protocol

Basic information

Config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

Tools

No tools detected

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is WASM MCP Server?

WASM MCP Server is a proof-of-concept Model Context Protocol (MCP) server that runs in WebAssembly within a web browser. It demonstrates how MCP tools and resources can be integrated into a browser environment, providing a calculator and a key-value storage system.

How to use WASM MCP Server?

Clone the project, install dependencies (npm install), and run the development server with Vite. Open the provided web interface to interact with the calculator (select operation, enter numbers, click "Calculate") and the storage system (enter key/value, click "Set Storage" or "Get Storage").

Key features of WASM MCP Server

Calculator tool with basic arithmetic (add, subtract, multiply, divide)
Key-value storage with set and retrieve operations
Persistent storage within the current browser session
Template-based resource paths (e.g., storage://{key})
Input validation and error handling for tools and resources
Custom browser transport layer for MCP communication

Use cases of WASM MCP Server

Demonstrating MCP server execution entirely in a web browser without a backend
Building lightweight client-side tools (calculator, storage) using the MCP protocol
Prototyping or testing MCP integrations in a controlled browser environment
Learning how to implement custom transport layers for MCP in web applications

FAQ from WASM MCP Server

What is the purpose of this project?

It is a proof-of-concept to show the feasibility of running an MCP server in a web browser using WebAssembly, focusing on core MCP concepts like tools and resources.