Data Processing

JSON Data Lineage Tracer

Trace JSON field paths, derived dependencies, and transformation history to build a field-level lineage graph

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/json-data-lineage-tracer' \
  -H 'Content-Type: application/json' \
  -d '{"sourceJson":"{\n  \"order\": {\n    \"id\": \"ORD-1001\",\n    \"customer\": {\n      \"firstName\": \"Ada\",\n      \"lastName\": \"Lovelace\"\n    },\n    \"totalCents\": 2599\n  }\n}","lineageRulesJson":"{\n  \"rules\": [\n    {\n      \"target\": \"$.order.totalUsd\",\n      \"sources\": [\n        \"$.order.totalCents\"\n      ],\n      \"transforms\": [\n        \"divide_by_100\",\n        \"round(2)\"\n      ]\n    },\n    {\n      \"target\": \"$.order.customerLabel\",\n      \"sources\": [\n        \"$.order.customer.firstName\",\n        \"$.order.customer.lastName\"\n      ],\n      \"transforms\": [\n        \"concat(\\\" \\\")\"\n      ]\n    }\n  ]\n}","includeContainerNodes":true,"maxFields":200}'

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-data-lineage-tracer

Parameters

Name	Type	Required	Description
sourceJson	textarea	Yes	—
lineageRulesJson	textarea	No	—
includeContainerNodes	checkbox	No	—
maxFields	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

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-data-lineage-tracer": {
      "name": "json-data-lineage-tracer",
      "description": "Trace JSON field paths, derived dependencies, and transformation history to build a field-level lineage graph",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=json-data-lineage-tracer",
      "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-data-lineage-tracer",
    "arguments": {
  "sourceJson": "{\n  \"order\": {\n    \"id\": \"ORD-1001\",\n    \"customer\": {\n      \"firstName\": \"Ada\",\n      \"lastName\": \"Lovelace\"\n    },\n    \"totalCents\": 2599\n  }\n}",
  "lineageRulesJson": "{\n  \"rules\": [\n    {\n      \"target\": \"$.order.totalUsd\",\n      \"sources\": [\n        \"$.order.totalCents\"\n      ],\n      \"transforms\": [\n        \"divide_by_100\",\n        \"round(2)\"\n      ]\n    },\n    {\n      \"target\": \"$.order.customerLabel\",\n      \"sources\": [\n        \"$.order.customer.firstName\",\n        \"$.order.customer.lastName\"\n      ],\n      \"transforms\": [\n        \"concat(\\\" \\\")\"\n      ]\n    }\n  ]\n}",
  "includeContainerNodes": true,
  "maxFields": 200
}
  }
}

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).

Questions or issues? Contact [email protected]