JSR

Verified Integration

Author: @specifying•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect JSR to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "jsr": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-jsr"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Provides a Model Context Protocol server, enabling large language models to interact comprehensively with the JSR (JavaScript Registry) API.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for JSR

JSR MCP is a Deno-based Model Context Protocol (MCP) server that enables large language models (LLMs) to interact comprehensively with the JSR (JavaScript Registry) API, facilitating automated package management and registry operations.

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