Development
Compare two API response payloads, highlight field-level diffs, and classify likely functional changes versus harmless runtime drift
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/api-response-diff-semantic-analyzer' \
-H 'Content-Type: application/json' \
-d '{"leftResponseJson":"{\"id\":\"c1a1c77d-8ab1-4f5f-a2b7-a5796a7f7d10\",\"name\":\"Alice\",\"createdAt\":\"2026-04-07T09:00:00Z\",\"profile\":{\"tier\":\"pro\",\"quota\":10}}","rightResponseJson":"{\"id\":\"a9f4e419-c5ef-4df6-b274-28a86f4d1b40\",\"name\":\"Alice\",\"createdAt\":\"2026-04-07T09:05:00Z\",\"profile\":{\"tier\":\"enterprise\",\"quota\":\"10\"}}","leftEndpointUrl":"","rightEndpointUrl":"","httpMethod":"GET","requestHeadersJson":"{}","requestBodyJson":"{}","leftLabel":"staging","rightLabel":"production","ignoreSafeDrift":true,"useAiSemanticReview":true}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/api-response-diff-semantic-analyzer| Name | Type | Required | Description |
|---|---|---|---|
| leftResponseJson | textarea | No | — |
| rightResponseJson | textarea | No | — |
| leftEndpointUrl | text | No | — |
| rightEndpointUrl | text | No | — |
| httpMethod | select | No | — |
| requestHeadersJson | textarea | No | — |
| requestBodyJson | textarea | No | — |
| leftLabel | text | No | — |
| rightLabel | text | No | — |
| ignoreSafeDrift | checkbox | No | — |
| useAiSemanticReview | checkbox | No | — |
HTML result
{
"result": "<div>Processed HTML content</div>",
"error": "Error message (optional)",
"message": "Notification message (optional)",
"metadata": {
"key": "value"
}
}Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-api-response-diff-semantic-analyzer": {
"name": "api-response-diff-semantic-analyzer",
"description": "Compare two API response payloads, highlight field-level diffs, and classify likely functional changes versus harmless runtime drift",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=api-response-diff-semantic-analyzer",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "api-response-diff-semantic-analyzer",
"arguments": {
"leftResponseJson": "{\"id\":\"c1a1c77d-8ab1-4f5f-a2b7-a5796a7f7d10\",\"name\":\"Alice\",\"createdAt\":\"2026-04-07T09:00:00Z\",\"profile\":{\"tier\":\"pro\",\"quota\":10}}",
"rightResponseJson": "{\"id\":\"a9f4e419-c5ef-4df6-b274-28a86f4d1b40\",\"name\":\"Alice\",\"createdAt\":\"2026-04-07T09:05:00Z\",\"profile\":{\"tier\":\"enterprise\",\"quota\":\"10\"}}",
"leftEndpointUrl": "",
"rightEndpointUrl": "",
"httpMethod": "GET",
"requestHeadersJson": "{}",
"requestBodyJson": "{}",
"leftLabel": "staging",
"rightLabel": "production",
"ignoreSafeDrift": true,
"useAiSemanticReview": true
}
}
}Questions or issues? Contact [email protected]