Data Processing

JSON Path Extractor

Query JSON with JSONPath or JMESPath-style expressions, inspect matched paths, and highlight extracted values in the original document

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/json-path-extractor' \
  -H 'Content-Type: application/json' \
  -d '{"jsonInput":"{\n  \"users\": [\n    { \"name\": \"Ada\", \"role\": \"admin\", \"score\": 9 },\n    { \"name\": \"Linus\", \"role\": \"editor\", \"score\": 6 }\n  ]\n}","queryExpressions":"$.users[?(@.role == \"admin\")]\n$.users[*].name","queryEngine":"jsonpath","displayMode":"highlighted-json","flattenArrays":true,"includeNullValues":false,"maxMatches":20}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/json-path-extractor

Parameters

Name	Type	Required	Description
jsonInput	textarea	Yes	—
queryExpressions	textarea	No	Use one expression per line. Supports field access, array indexes, wildcards, and simple filters.
queryEngine	select	No	—
displayMode	select	No	—
flattenArrays	checkbox	No	—

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-json-path-extractor": {
      "name": "json-path-extractor",
      "description": "Query JSON with JSONPath or JMESPath-style expressions, inspect matched paths, and highlight extracted values in the original document",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=json-path-extractor",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "json-path-extractor",
    "arguments": {
  "jsonInput": "{\n  \"users\": [\n    { \"name\": \"Ada\", \"role\": \"admin\", \"score\": 9 },\n    { \"name\": \"Linus\", \"role\": \"editor\", \"score\": 6 }\n  ]\n}",
  "queryExpressions": "$.users[?(@.role == \"admin\")]\n$.users[*].name",
  "queryEngine": "jsonpath",
  "displayMode": "highlighted-json",
  "flattenArrays": true,
  "includeNullValues": false,
  "maxMatches": 20
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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