JSON Tools

FreeNot checked

Validates JSON, pretty-prints or minifies documents, and extracts values at a dot/bracket path.

by pipeworx-io

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About

Validates JSON, pretty-prints or minifies documents, and extracts values at a dot/bracket path.

README

JSON tools MCP.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

Tool	Description
`validate_json`	Validate a JSON string (keyless, offline). Returns whether it is valid and, if not, the error message and the character position.
`format_json`	Pretty-print or minify a JSON string. `indent` sets spaces (default 2); pass 0 to minify to a single line. Keyless, offline.
`query_json`	Extract a value from JSON at a path using dot/bracket notation, e.g. "user.addresses[0].city". Keyless, offline.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "json": {
      "url": "https://gateway.pipeworx.io/json/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Json data" })

The gateway picks the right tool and fills the arguments automatically.

License

MIT

from github.com/pipeworx-io/mcp-json

Install JSON Tools in Claude Desktop, Claude Code & Cursor

Recommended · one command, every IDE

unyly install json-tools

Installs into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.

First time? Get the CLI: curl -fsSL https://unyly.org/install | sh

Or configure manually

Run in your terminal:

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

Step-by-step: how to install JSON Tools

Install JSON Tools in Claude Desktop Install JSON Tools in Claude Code Install JSON Tools in Cursor Install JSON Tools in VS Code

FAQ

Is JSON Tools MCP free?

Yes, JSON Tools MCP is free — one-click install via Unyly at no cost.

Does JSON Tools need an API key?

No, JSON Tools runs without API keys or environment variables.

Is JSON Tools hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install JSON Tools in Claude Desktop, Claude Code or Cursor?

Open JSON Tools on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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