Effect MCP

Effect MCP

An MCP server that provides real-time documentation access for the Effect ecosystem, supporting core packages and ecosystem packages. It can intelligently identify imports in the code and retrieve the latest documentation.

Developer tools Knowledge management and memory #Real-time documentation #Effect ecosystem #Intelligent identification #Development assistance Local .TypeScript

rating : 2.5 points

downloads : 5.9K

update time : 2025-04-28

What is the Effect MCP Server?

This is a documentation service system designed specifically for the Effect ecosystem. It can intelligently identify Effect-related packages used in the code and retrieve the latest documentation in real-time to answer developers' questions about API usage.

How to use the Effect MCP Server?

After connecting via the VS Code plugin or other clients compatible with the MCP protocol, the system will automatically analyze your code dependencies and provide the most relevant Effect package documentation when you ask questions.

Use cases

When you encounter questions about API usage while developing with the Effect core library or peripheral ecosystem packages (@effect/platform, etc.), this service can quickly provide accurate documentation references.

Main features

Real-time documentation retrieval

Connect directly to the official Effect documentation source to ensure that the provided references are always the latest version.

Multi-package support

Support both the effect core package and all official ecosystem packages (@effect/platform, etc.), including experimental versions.

Context awareness

Intelligently analyze the Effect-related packages imported in the project and prioritize providing documentation for the packages used in the current project.

IDE integration

Perfectly compatible with development environments that support the MCP protocol, such as VS Code. Documentation hints are displayed directly next to the code.

Advantages

No need to manually search for documentation. Obtain precise API references directly during the development process.

Cover documentation for the entire Effect series of packages, including experimental features that have not yet been released as stable versions.

Intelligently identify project dependencies and avoid interference from documentation of unrelated packages.

Deeply integrate with the development environment to improve coding efficiency

Limitations

Currently only support Effect-related packages in the JavaScript/TypeScript ecosystem.

Requires client support for the MCP protocol to use all features.

Limited documentation support for private customized Effect packages

How to use

Install the service

Install the MCP server via the pnpm package manager.

Configure the client

Add the server address in VS Code or other clients that support MCP.

Start using

Ask questions about the Effect API in the code editor, and the system will automatically return relevant documentation fragments.

Usage examples

Query core API usage

When unsure about the correct usage of the Pipe function in the Effect core library

Query ecosystem package functions

When you need to understand how to implement a specific function in the @effect/platform package

Frequently Asked Questions

Do I need to be connected to the internet to use it?

Does it support custom Effect extension packages?

How to update the locally cached documentation?

Related resources

Effect official documentation

Complete documentation for the Effect core library

MCP protocol description

Official specification document for the Model Context Protocol

GitHub repository

Source code and issue tracking for the project

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