JSON MCP Server

@VadimNastoyashchy

Repository Homepage

Basic information

About JSON MCP Server

JSON MCP Server

#json #mcp

JSON MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "json-mcp-server": {
      "command": "npx",
      "args": [
        "json-mcp-server@latest"
      ]
    }
  }
}

JSON MCP Server tools

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Overview

What is JSON MCP?

JSON MCP is a Model Context Protocol (MCP) server that lets Large Language Models split, merge, find, and validate data within JSON files. It is designed for developers and AI agents that need to manipulate structured JSON data through natural‑language prompts.

How to use JSON MCP?

Install JSON MCP globally (npm install -g json-mcp-server@latest) and run json-mcp-server, or use npx json-mcp-server@latest. Configure it as an MCP server in VS Code (via User Settings JSON) or in Claude Desktop (via Smithery CLI). Once connected, invoke the tools split or merge by providing file or folder paths in your prompts.

Key features of JSON MCP

Fast and lightweight operation
LLM‑friendly, natural‑language tool interface
Split a JSON file into multiple parts
Merge several JSON files into one
Find specific data within JSON files
Validate JSON content against conditions

Use cases of JSON MCP

Splitting a large JSON file into smaller files with a specified number of objects per file
Merging multiple JSON files from a folder into a single JSON file
Querying structured JSON data using natural‑language prompts from an AI assistant

Frequently asked questions

What exactly does JSON MCP do?

It provides MCP tools for LLMs to split, merge, find, and validate data inside JSON files using natural‑language instructions.

How do I install JSON MCP?

Install globally with `npm install -g json-mcp-server@latest`, or run directly with `npx json-mcp-server@latest`. For Claude Desktop, use Smithery: `npx -y @smithery/cli install @VadimNastoyashchy/json-mcp --client claude`.

How do I configure JSON MCP in VS Code?

Add a server entry to your VS Code User Settings JSON: `{"mcp":{"servers":{"json-mcp-server":{"command":"npx","args":["json-mcp-server@latest"]}}}}`. Alternatively, use the VS Code CLI command `code --add-mcp '{"name":"json-mcp-server","command":"npx","args": ["json-mcp-server@latest"]}'`.

Does JSON MCP require any authentication or API keys?

No. The server runs locally and does not mention any required authentication tokens or external API keys.

What runtime environment does JSON MCP require?

It requires Node.js (npm/npx) and is available as an npm package. No other dependencies are listed.

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