Json Comparer

Data REST API MCP

Returns a git-style line diff of two JSON documents after both are pretty-printed with 2-space indentation. Each line is marked added, removed or unchanged with its line numbers; a unified text block and counts are included.

This page documents the MCP tool findutils:json_comparer. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:json_comparer · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "json_comparer",
      "arguments": {
        "left": "{\"a\":1,\"b\":2}",
        "right": "{\"a\":1,\"b\":3}"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
left	string	yes	The original JSON document (text).
right	string	yes	The changed JSON document (text).
sort_keys	boolean	no	Sort object keys recursively before formatting, so key order does not show as a change. Default: false. Default: false.

Example arguments (verified)

{
  "left": {
    "a": 1,
    "b": 2
  },
  "right": {
    "a": 1,
    "b": 3
  }
}

Arguments that carry JSON as a string are shown decoded for readability. The Copy button copies the exact wire arguments.

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/json-comparer/execute — no key, 60 requests/min.

Open the REST reference for Json Comparer →

More Data tools

Api Docs Generator

Return API documentation generated from a list of endpoints, as Markdown (with table of contents, request/response examples) or as an OpenAP

Bookmarks Html To Csv

Convert a browser bookmarks.html export from Chrome, Firefox, Edge, Safari or any other browser that writes the Netscape bookmark format int

Csv To Bookmarks Html

Convert a CSV of links into a Netscape bookmarks.html file that Chrome, Firefox, Edge and Safari import.

Csv To Json

Parse CSV text into an array of objects keyed by the header row.

Csv To Ndjson

Convert CSV into newline-delimited JSON (NDJSON, JSON Lines, .jsonl): one JSON object per line, keyed by the header row.

Csv To Sql

Convert CSV text into SQL INSERT statements, optionally preceded by a CREATE TABLE.

Csv To Tsv

Convert comma-separated values to tab-separated values, the format spreadsheet paste, psql and mysql --batch expect.

Graphql To Typescript

Convert a GraphQL SDL schema into TypeScript type definitions and return the generated code with counts of emitted types, enums, and inputs.