Json

Name: Json
Author: rog0x

by rog0xversion 1.0.1i★ –iRuns on your computer

Registry nameio.github.rog0x/json

Install

Overview

Description from the maker (original English)

JSON/YAML/CSV validate, diff, transform for AI agents

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "json": {
      "command": "npx",
      "args": [
        "-y",
        "@rog0x/mcp-json-tools"
      ]
    }
  }
}

Run this in your terminal

claude mcp add json -- npx -y @rog0x/mcp-json-tools

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "json": {
      "command": "npx",
      "args": [
        "-y",
        "@rog0x/mcp-json-tools"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "json": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@rog0x/mcp-json-tools"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account rog0x, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32415 servers in this category
Published to the registry more recently than 4% of the other 32415 servers in this category
Basic checks equal to or better than 100% of the other 32415 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Json safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 8 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Safe Fetch

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

Install

Safe Fetch

by Sanoy24

MCP server for fetching URLs, safe against SSRF, DNS rebinding, and redirect-to-internal attacks.

Runs on your computerUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

mcp-json-tools

An MCP (Model Context Protocol) server that provides JSON and data manipulation tools for AI agents. Designed for use with Claude Code, Claude Desktop, and any MCP-compatible client.

Tools

Tool	Description
`json_validate`	Validate JSON data against a JSON Schema, returning detailed errors with paths
`json_diff`	Compare two JSON objects, showing additions, removals, and changes with paths
`json_transform`	Transform JSON with pick, rename, flatten, and unflatten operations
`csv_to_json`	Convert CSV text to a JSON array with configurable headers, delimiters, and type casting
`json_to_csv`	Convert a JSON array of objects to CSV text
`yaml_to_json`	Convert YAML text to JSON
`json_to_yaml`	Convert JSON text to YAML

Installation

npm install

npm run build

Usage with Claude Code

claude mcp add json-tools -- node D:/products/mcp-servers/mcp-json-tools/dist/index.js

Usage with Claude Desktop

Add the following to your Claude Desktop configuration file:

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

"mcpServers": { "json-tools": { "command": "node", "args": ["D:/products/mcp-servers/mcp-json-tools/dist/index.js"] } } }

Tool Details

json_validate

Validate JSON data against a JSON Schema. Returns a valid boolean and an array of errors, each with the field path, message, and schema keyword that failed.

Parameters:

data (string) — JSON data to validate
schema (string) — JSON Schema to validate against

json_diff

Compare two JSON objects and produce a structured diff. Each difference includes the dot-notation path, the type of change (added, removed, or changed), and the old/new values.

Parameters:

original (string) — Original JSON object
modified (string) — Modified JSON object

json_transform

Apply transformations to JSON data. Supports four operations:

pick — Extract specific fields by dot-notation paths
rename — Rename top-level keys using a mapping object
flatten — Flatten nested objects into dot-separated keys
unflatten — Restore dot-separated keys into nested objects

Parameters:

data (string) — JSON data to transform
operation (string) — One of: pick, rename, flatten, unflatten
fields (string[]) — For pick: field paths to extract
mapping (object) — For rename: old-to-new key mapping
separator (string) — For flatten/unflatten: separator character (default: ".")

csv_to_json

Parse CSV text into a JSON array of objects.

Parameters:

csv (string) — CSV text to convert
hasHeaders (boolean) — Whether the first row is headers (default: true)
delimiter (string) — Column delimiter (default: ",")
castTypes (boolean) — Auto-cast numbers and booleans (default: false)

json_to_csv

Convert a JSON array of objects to CSV text. Headers are derived from the union of all object keys.

Parameters:

data (string) — JSON array to convert
delimiter (string) — Column delimiter (default: ",")
includeHeaders (boolean) — Include header row (default: true)

yaml_to_json / json_to_yaml

Convert between YAML and JSON formats.

Parameters:

yamlText / jsonText (string) — Text to convert
indent (number) — Indentation spaces (default: 2)

License

MIT

Json

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Safe Fetch

README from the maker

mcp-json-tools

Tools

Installation

Usage with Claude Code

Usage with Claude Desktop

Tool Details

json_validate

json_diff

json_transform

csv_to_json

json_to_csv

yaml_to_json / json_to_yaml

License