Jsmcp

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Jsmcp to Claude Desktop or Cursor in seconds

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

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

Architecture & Capabilities

System Overview

Enables Large Language Models to programmatically interact with MCP tools using JavaScript.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Jsmcp

It exposes approved MCP tools as JavaScript namespaces, allowing LLMs to write robust code incorporating branching logic, loops, retries, and result aggregation, treating MCP tools more like a programmable API.

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