WebMCP Registry

json_formatter

verifiedv0.1

Formats, minifies, or validates JSON in the browser. Pass text (0–100000 chars) and optional mode, indent, and sortKeys. Invalid JSON is returned as valid:false with an error object — it does not throw and this Tool does not execute JSON as code. Variant URLs are not a second machine Tool — pass mode explicitly. Do not use this to find-and-replace (that is find_and_replace).

Updated 9/3/2026 · Created 9/3/2026

Input Schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "text"
  ],
  "properties": {
    "mode": {
      "enum": [
        "format",
        "minify",
        "validate"
      ],
      "type": "string",
      "default": "format"
    },
    "text": {
      "type": "string",
      "maxLength": 100000
    },
    "indent": {
      "enum": [
        "2",
        "4",
        "tab"
      ],
      "type": "string",
      "default": "2"
    },
    "sortKeys": {
      "type": "boolean",
      "default": false
    }
  },
  "additionalProperties": false
}

Full Contract

{
  "name": "json_formatter",
  "description": "Formats, minifies, or validates JSON in the browser. Pass text (0–100000 chars) and optional mode, indent, and sortKeys. Invalid JSON is returned as valid:false with an error object — it does not throw and this Tool does not execute JSON as code. Variant URLs are not a second machine Tool — pass mode explicitly. Do not use this to find-and-replace (that is find_and_replace).",
  "inputSchema": {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "text"
    ],
    "properties": {
      "mode": {
        "enum": [
          "format",
          "minify",
          "validate"
        ],
        "type": "string",
        "default": "format"
      },
      "text": {
        "type": "string",
        "maxLength": 100000
      },
      "indent": {
        "enum": [
          "2",
          "4",
          "tab"
        ],
        "type": "string",
        "default": "2"
      },
      "sortKeys": {
        "type": "boolean",
        "default": false
      }
    },
    "additionalProperties": false
  }
}

GET /api/tool/simpletoolstack.com/json_formatter