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e18e/mcp

Helps AI agents avoid installing bloated or outdated npm packages by checking install commands and analyzing source files for imports that should be replaced. Provides curated migration guides when it spots dependencies with better native alternatives or more actively maintained successors. Useful when you're working with Claude on Node.js projects and want a guardrail against pulling in legacy packages or unnecessarily heavy libraries. The server catches these issues during development rather than after they're already in your package.json. Still in early development, so expect breaking changes.

tools
3
transport
STDIO, HTTP
last updated
Aug 19, 2026
View on GitHub

Install

From registry metadata
$ npx add-mcp https://mcp.e18e.dev/mcp --name e18e

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http e18e https://mcp.e18e.dev/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 3 tools

Verified live against the running server on Nov 6, 2026.

code-checkerCheck if the code contains some inefficient or outdated packages imported and suggests alternatives.1 params

Check if the code contains some inefficient or outdated packages imported and suggests alternatives.

Parameters* required
code*string
The code to check.
lookup-replacementCheck if a package has a more performant, maintained or efficient replacement by package name, replacement text, or topic. Returns a list of suggestions with descriptions and documentation links.1 params

Check if a package has a more performant, maintained or efficient replacement by package name, replacement text, or topic. Returns a list of suggestions with descriptions and documentation links.

Parameters* required
query*string
The package name, replacement text, or topic to search for, e.g. `chalk`, `filter`, or `Array.prototype.map`.
npm-i-checkerCheck for outdated or insecure npm packages in an install script like `npm i` or `pnpm add` or `yarn add` or `bun i`.1 params

Check for outdated or insecure npm packages in an install script like `npm i` or `pnpm add` or `yarn add` or `bun i`.

Parameters* required
command*string
The install command to check, e.g. `npm i express lodash` or `pnpm add express lodash` or `yarn add express lodash` or `bun i express lodash`.

Sponsors

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Readme

@e18e/mcp

The official e18e MCP server for advising agents on modern and performant best practices

[!WARNING] This project is in very early stages and may break without notice. Have fun!

Capabilities

  • Check install commands for packages that have better-native or better-maintained alternatives
  • Analyze source files to identify imports that should be replaced with modern alternatives
  • Provide curated migration guides for transitioning away from outdated packages

Packages

This monorepo contains the following packages:

  • @e18e/mcp - The main stdio implementation of the e18e MCP server

Sponsors

e18e community sponsors

License

MIT

Details

Repository
github.com/e18e/mcp
Category
AI & LLM Tools
Package
@e18e/mcp
Transport
STDIO, HTTP
Registry
MCP registry, active
Prompts
1
Tools verified
Nov 6, 2026

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