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Json Mcp Server

Json Mcp Server

Created by GongRzhe•6 months ago
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JSON handling and processing microservice server

Developer Tools
JSONhandlingprocessingmicroserviceserver

JSON MCP Server (@gongrzhe/[email protected])

A JSON Model Context Protocol (MCP) server implementation for querying and manipulating JSON data. This server enables LLMs to interact with JSON data through a set of standardized tools.

Installation & Usage

## Using npx with specific version (recommended)
npx @gongrzhe/[email protected]

## Install specific version globally
npm install -g @gongrzhe/[email protected]

## Run after global installation
server-json-mcp

Components

Tools

  • query

    • Query JSON data using JSONPath syntax with extended operations
    • Input:
      • url (string): URL of the JSON data source
      • jsonPath (string): JSONPath expression with optional operations
  • filter

    • Filter JSON data using conditions
    • Input:
      • url (string): URL of the JSON data source
      • jsonPath (string): Base JSONPath expression
      • condition (string): Filter condition

Supported Operations

Array Operations

  • Slicing: $[0:5], $[-3:], $[1:4]
  • Sorting: $.sort(price), $.sort(-price)
  • Distinct: $.distinct()
  • Transformations:
    • Map: $.map(fieldName)
    • Flatten: $.flatten()
    • Union: $.union([1,2,3])
    • Intersection: $.intersection([1,2,3])

String Operations

  • Case: $.toLowerCase(), $.toUpperCase()
  • Tests: $.startsWith('test'), $.endsWith('test')
  • Search: $.contains('test'), $.matches('pattern')

Numeric Operations

  • Math: $.math(+10), $.pow2()
  • Rounding: $.round(), $.floor(), $.ceil()
  • Functions: $.abs(), $.sqrt()

Date Operations

  • Format: $.format('YYYY-MM-DD')
  • Check: $.isToday()
  • Modify: $.add(1, 'days')

Aggregation Operations

  • Group: $.groupBy(category)
  • Stats: $.sum(price), $.avg(price), $.min(price), $.max(price)

Configuration

Usage with Claude Desktop

To use this server with the Claude Desktop app, add the following configuration to your claude_desktop_config.json:

{
  "json": {
    "command": "npx",
    "args": [
      "@gongrzhe/[email protected]"
    ]
  }
}

Alternatively, you can use the node command directly if you have the package installed:

{
  "json": {
    "command": "node",
    "args": [
      "path/to/build/index.js"
    ]
  }
}

Development

Building from Source

  1. Clone the repository
  2. Install dependencies:
    npm install
    
  3. Build the project:
    npm run build
    

Notes

  1. All JSONPath expressions start with $ representing the root object
  2. Array indices are zero-based
  3. String values in operations should be wrapped in quotes
  4. Date operations support ‘days’, ‘months’, and ‘years’ units
  5. Numeric operations support basic arithmetic operators (+, -, *, /)

License

MIT

Prerequisites

  • •Familiarity with the server domain
  • •Basic understanding of related technologies
  • •Knowledge of Developer Tools

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Details

Created

March 07, 2025

Last Updated

March 07, 2025

Category

Developer Tools

Author

GongRzhe

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