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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.
rating : 2.5 points
downloads : 11
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 retrievalConnect directly to the official Effect documentation source to ensure that the provided references are always the latest version.
Multi-package supportSupport both the effect core package and all official ecosystem packages (@effect/platform, etc.), including experimental versions.
Context awarenessIntelligently analyze the Effect-related packages imported in the project and prioritize providing documentation for the packages used in the current project.
IDE integrationPerfectly compatible with development environments that support the MCP protocol, such as VS Code. Documentation hints are displayed directly next to the code.
Advantages and limitations
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.
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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 usageWhen unsure about the correct usage of the Pipe function in the Effect core library
Query ecosystem package functionsWhen 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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