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JSON Query MCP Server

@mgraczyk

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mgraczyk

JSON Query MCP Server について

An MCP server that gives AI agents tools to query large JSON files

#json-query#mcp#json-tools

JSON Query MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "json-query": {
      "command": "npx",
      "args": [
        "json-query-mcp"
      ]
    }
  }
}

JSON Query MCP Server のツール

ツール一覧はまだありません

この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。

上のボタンで一時的なサンドボックスでこのサーバーを実行し、ツール一覧を取得できます。

概要

What is JSON Query MCP?

An MCP server that enables LLMs implementing the Model Context Protocol to query large JSON files using JSONPath expressions and string-based key/value searching. It is designed for handling JSON data too large to fit in a single LLM context window.

How to use JSON Query MCP?

Run npx json-query-mcp from the command line. For Cursor, add an entry to ~/.cursor/mcp.json specifying "command": "npx" and "args":["<path-to-repo>"].

Key features of JSON Query MCP

  • Query JSON files using JSONPath expressions
  • Search for keys that match a query string
  • Search for values that match a query string
  • Handle JSON files larger than 1 million characters

Use cases of JSON Query MCP

  • Extract a small subset of data from a massive JSON Swagger definition to generate TypeScript interfaces
  • Find specific keys or values in complex or deeply nested JSON documents
  • Enable LLMs to work with JSON files that exceed typical context window limits

よくある質問

1

What does JSON Query MCP do?

It provides tools for LLMs to query and search large JSON files without loading the entire file into the model’s context.

2

How do I install JSON Query MCP?

Run `npx json-query-mcp`, or configure it as an MCP server in Cursor by adding the command and arguments to `mcp.json`.

3

Does JSON Query MCP have any runtime dependencies?

The README does not specify any dependencies beyond Node.js (implied by `npx` and npm commands).

4

Can JSON Query MCP handle files larger than 1 million characters?

Yes, the example demonstrates it reading a Swagger definition exceeding 1 million characters and extracting a small portion.

5

Where does the JSON data live?

The README does not specify; data is presumably passed as a file path or content via the MCP tool interface.

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