json_filter

json_filter

Extract and filter specific fields from JSON data using a shape object. Define desired fields for extraction, including nested structures, to reduce file size and streamline data processing. Supports local files or HTTP/HTTPS URLs.

Instructions

Filter JSON data using a shape object to extract only the fields you want. Provide filePath (local file or HTTP/HTTPS URL) and shape parameters.

Input Schema

Name	Required	Description
`chunkIndex`	No	Index of chunk to retrieve (0-based). If filtered data exceeds 400KB, it will be automatically chunked. Defaults to 0 if not specified.
`filePath`	Yes	Path to the JSON file (local) or HTTP/HTTPS URL to filter
`shape`	No	Shape object (formatted as valid JSON) defining what fields to extract. Use 'true' to include a field, or nested objects for deep extraction. Examples: 1. Extract single field: {"type": true} 2. Extract multiple fields: {"type": true, "version": true, "source": true} 3. Extract nested fields: {"appState": {"gridSize": true, "viewBackgroundColor": true}} 4. Extract from arrays: {"elements": {"type": true, "x": true, "y": true}} - applies to each array item 5. Complex nested extraction: { "type": true, "version": true, "appState": { "gridSize": true, "viewBackgroundColor": true }, "elements": { "type": true, "text": true, "x": true, "y": true, "boundElements": { "type": true, "id": true } } } Note: - Arrays are automatically handled - the shape is applied to each item in the array. - Use json_schema tool to analyse the JSON file schema before using this tool. - Use json_dry_run tool to get a size breakdown of your desired json shape before using this tool.

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "chunkIndex": {
      "description": "Index of chunk to retrieve (0-based). If filtered data exceeds 400KB, it will be automatically chunked. Defaults to 0 if not specified.",
      "type": "number"
    },
    "filePath": {
      "description": "Path to the JSON file (local) or HTTP/HTTPS URL to filter",
      "type": "string"
    },
    "shape": {
      "description": "Shape object (formatted as valid JSON) defining what fields to extract. Use 'true' to include a field, or nested objects for deep extraction.\n\nExamples:\n1. Extract single field: {\"type\": true}\n2. Extract multiple fields: {\"type\": true, \"version\": true, \"source\": true}\n3. Extract nested fields: {\"appState\": {\"gridSize\": true, \"viewBackgroundColor\": true}}\n4. Extract from arrays: {\"elements\": {\"type\": true, \"x\": true, \"y\": true}} - applies to each array item\n5. Complex nested extraction: {\n   \"type\": true,\n   \"version\": true,\n   \"appState\": {\n     \"gridSize\": true,\n     \"viewBackgroundColor\": true\n   },\n   \"elements\": {\n     \"type\": true,\n     \"text\": true,\n     \"x\": true,\n     \"y\": true,\n     \"boundElements\": {\n       \"type\": true,\n       \"id\": true\n     }\n   }\n}\n\nNote: \n- Arrays are automatically handled - the shape is applied to each item in the array.\n- Use json_schema tool to analyse the JSON file schema before using this tool.\n- Use json_dry_run tool to get a size breakdown of your desired json shape before using this tool.\n"
    }
  },
  "required": [
    "filePath"
  ],
  "type": "object"
}

JSON MCP Server

Instructions

Input Schema

Input Schema (JSON Schema)

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