---
title: "Execute html-comparison evaluator"
method: POST
path: "/v2/evaluators/html-comparison/execute"
tags: ["evaluators"]
---

# Execute html-comparison evaluator

`POST /v2/evaluators/html-comparison/execute`

Compare two HTML documents for structural and content similarity

**Request Body:**
- `input.html1` (string, required): The first HTML document to compare
- `input.html2` (string, required): The second HTML document to compare

## Request body

- RequestHtmlComparisonRequest
  - `input` RequestHtmlComparisonInput, required
    - `html1` string, required
    - `html2` string, required

## Response `200`

OK

- ResponseHtmlComparisonResponse
  - `similarity_score` number

## Other responses

- `400` — Bad Request
- `500` — Internal Server Error

## Changes

> 11 revisions in range; 1 could not be searched.

- **2026-04-12** `bd3e46b75d87` — 1 info
  - endpoint added
- **2026-01-01** `aef6c851927f` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/traceloop/apis/traceloop-api/changes/v2/evaluators/html-comparison/execute/post.md)

---

[API](https://skmtc.dev/traceloop/apis/traceloop-api.md) · [All operations](https://skmtc.dev/traceloop/apis/traceloop-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/traceloop/traceloop-api/revisions/9c12a04a5947/schema)