Code Diff Checker API

POST https://api.findutils.com/api/tools/code-diff-checker/execute

Returns a line-by-line diff of two code snippets: each line marked added, removed or unchanged with its original and modified line numbers, plus addition/deletion counts and a unified patch text. Can ignore whitespace and letter case when comparing.

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Request body

application/json

original

string required

The original code.
modified

string required

The modified code.
ignore_whitespace

boolean optional

Collapse runs of whitespace and trim lines before comparing. Default: false. Default false.
ignore_case

boolean optional

Compare lines case-insensitively. Default: false. Default false.

Example arguments

Verified

{
  "original": "a\nb\nc",
  "modified": "a\nx\nc"
}

curl -X POST https://api.findutils.com/api/tools/code-diff-checker/execute \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "original": "a\nb\nc",
    "modified": "a\nx\nc"
  }'

const response = await fetch('https://api.findutils.com/api/tools/code-diff-checker/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', Authorization: 'Bearer YOUR_API_KEY' },
  body: JSON.stringify({"original":"a\nb\nc","modified":"a\nx\nc"}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/code-diff-checker/execute",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"original":"a\nb\nc","modified":"a\nx\nc"},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/code-diff-checker/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json', 'Authorization: Bearer YOUR_API_KEY'],
    CURLOPT_POSTFIELDS => '{"original":"a\nb\nc","modified":"a\nx\nc"}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call code_diff_checker from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: API key
REST id: code-diff-checker
MCP name: code_diff_checker
Category: Text
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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