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effect-mcp-server

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Ship MCP tool servers powered by Effect

Software Engineering#typescript#tooling#mcp#schema validation#stdio http transport#effectjs#resource templates
Authormpsuesser
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill solves the problem of building reliable MCP (Model Context Protocol) servers by giving you a practical, Effect-native blueprint for exposing tools, resources, and prompts to LLM clients.

Core Features & Use Cases

  • Effect-based MCP server construction: Merge MCP part layers (resources, prompts, toolkits) and provide a transport layer to run a compliant server.
  • Schema-first tool and parameter modeling: Define tool inputs/outputs and resource template parameters using Effect Schema for validation and decoding.
  • Transport options (stdio or HTTP): Implement MCP servers over stdio for desktop/CLI clients and over HTTP for web/SSE-style deployments.
  • Runtime-safe server wiring: Use the Layer pattern (including correct stderr logging for stdio) and launch the server as a long-lived layer.

Quick Start

Build an MCP server layer by defining your Tools/Toolkit, Resources, and Prompts with Effect and Schema, then provide an MCP transport layer (stdio or HTTP) and launch it with Layer.launch.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: effect-mcp-server
Download link: https://github.com/mpsuesser/pi-effect-harness/archive/main.zip#effect-mcp-server

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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