---
title: "Structured diff in unified, words, chars, or JSON format"
method: POST
path: "/v1/tools/diff-text"
tags: ["Utility"]
---

# Structured diff in unified, words, chars, or JSON format

`POST /v1/tools/diff-text`

## Request

- Base URL: `https://archtools.dev`
- URL: `https://archtools.dev/v1/tools/diff-text`
- Auth: API key in header `x-api-key`

## Request body

- object
  - `text1` string, required: Original text
  - `text2` string, required: Modified text
  - `mode` 'unified' | 'words' | 'chars' | 'json': Diff output format

## Response `200`

Structured diff output

---

[API](https://skmtc.dev/archtools/apis/arch-tools-api.md) · [All operations](https://skmtc.dev/archtools/apis/arch-tools-api/llms.txt) · [OpenAPI document](https://skmtc.dev/archtools/apis/arch-tools-api/revisions/ed6c1f974033?raw)