Best JavaScript MCP Servers
JavaScript is a high-level, interpreted programming language that is one of the core technologies of the World Wide Web. It's a versatile language that allows developers to create interactive elements on websites and is widely used for web development, game development, and creating web applications.
Why this server?
Generates JavaScript code snippets for interacting with blockchain APIs
AlicenseBqualityDmaintenanceEnables natural language access to blockchain data and insights through the Seitrace API. Supports querying address details, token information (ERC-20, ERC-721, ERC-1155, CW20, CW721), transaction data, and smart contract details across multiple blockchain networks.Last updated5598MITWhy this server?
Supports building JavaScript LLM applications with vector database memory capabilities powered by Chroma, enabling embedding-based retrieval for context augmentation.

Chroma MCP Serverofficial
AlicenseAqualityDmaintenanceA server that provides data retrieval capabilities powered by Chroma embedding database, enabling AI models to create collections over generated data and user inputs, and retrieve that data using vector search, full text search, and metadata filtering.Last updated13570Apache 2.0Why this server?
Enables execution of JavaScript code in a browser environment through the browsercat_evaluate tool, allowing interaction with web pages and manipulation of web content.
AlicenseBqualityCmaintenanceA Model Context Protocol server that provides browser automation capabilities using BrowserCat's cloud browser service. This server enables LLMs to interact with web pages, take screenshots, and execute JavaScript in a real browser environment without needing to install browsers locally.Last updated786MITWhy this server?
Enables native control and debugging of JavaScript execution within Chromium-based browsers, allowing for setting breakpoints, stepping through code, and evaluating expressions in local scopes.
AlicenseAqualityAmaintenancechrome-debug-mcp is an asynchronous Rust-based Model Context Protocol (MCP) server that allows AI agents and Large Language Models to natively debug Chromium-based browsers via the Chrome DevTools Protocol (CDP).Last updated4244MITWhy this server?
Allows use of JavaScript interpreter to calculate objective values for optimization problems.

Optuna MCP Serverofficial
AlicenseBqualityBmaintenanceA Model Context Protocol server that enables automated optimization and analysis using Optuna, allowing LLMs to perform hyperparameter optimization and interactively analyze optimization results via chat interfaces.Last updated2678MITWhy this server?
Provides capability to execute JavaScript code with optional dependencies in a secure environment

Dumpling AI MCP Serverofficial
AlicenseCqualityDmaintenanceIntegrates with Dumpling AI to provide data scraping, content processing, knowledge management, and code execution capabilities through tools for web interactions, document handling, and AI services.Last updated2271430MITWhy this server?
Provides comprehensive JavaScript/Node.js analysis including vanilla JS, Node.js, and module systems (.js, .mjs, .cjs, .jsx) with full cross-language linking capabilities.
AlicenseAqualityAmaintenanceKnot is a semantic and structural codebase indexer designed for AI coding agents and developers navigating large projects. It combines vector search and graph traversal to find code by meaning, analyze impact via reverse dependencies, and explore file architectures.Last updated1253MITWhy this server?
Maps JavaScript repositories to identify key files and code structures, prioritizing them based on importance using PageRank
AlicenseAqualityFmaintenanceA powerful tool designed to help, primarily LLMs, understand and navigate complex codebases. It functions both as a command-line application for on-demand analysis and as an MCP (Model Context Protocol) server, providing continuous repository mapping capabilities to other applications. By generatingLast updated22181MITWhy this server?
Supports JavaScript rendering for dynamic content when converting webpages to Markdown.

Skrape MCP Serverofficial
AlicenseBqualityFmaintenanceThis server converts webpages into clean, structured Markdown optimized for language model consumption, removing unnecessary content and supporting JavaScript rendering.Last updated112MIT