Spell Check

Check spelling and get correction suggestions. Returns a corrected version of the input text and a list of individual corrections with their positions.

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Overview

Use Cases

Writing assistants and text editors
User-generated content quality checks
Form validation and input sanitisation
Educational platforms and grammar tools

Features

Detects misspelled words using an English dictionary

Provides the best correction suggestion per misspelled word

Returns character positions for each correction

Preserves original capitalisation in suggestions

Only ASCII letter sequences are spell-checked; non-ASCII characters are passed through unchanged

API Endpoints

Check Spelling

Checks the input text for spelling mistakes and returns a corrected version along with per-word corrections.

POST

https://api.requiems.xyz/v1/text/spellcheck

Parameters

Name	Type	Required	Description
text	`string`	Required	The text to spell-check.

Try it out

Live Demo

Request

text * (string)

The text to spell-check.

Response Fields

Field	Type	Description
corrected	`string`	The full input text with all misspelled words replaced by their suggested corrections
corrections	`array of objects`	List of individual corrections. Each item contains: original (the misspelled word), suggested (the correction), and position (0-based character offset in the original text)

Code Examples

curl -X POST https://api.requiems.xyz/v1/text/spellcheck \
  -H "requiems-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text": "Ths is a smiple tset"}'

import requests

url = "https://api.requiems.xyz/v1/text/spellcheck"
headers = {
    "requiems-api-key": "YOUR_API_KEY",
    "Content-Type": "application/json"
}
payload = {"text": "Ths is a smiple tset"}

response = requests.post(url, headers=headers, json=payload)
print(response.json())

const response = await fetch('https://api.requiems.xyz/v1/text/spellcheck', {
  method: 'POST',
  headers: {
    'requiems-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ text: 'Ths is a smiple tset' })
});

const data = await response.json();
console.log(data.data.corrected);
console.log(data.data.corrections);

require 'net/http'
require 'json'

uri = URI('https://api.requiems.xyz/v1/text/spellcheck')
request = Net::HTTP::Post.new(uri)
request['requiems-api-key'] = 'YOUR_API_KEY'
request['Content-Type'] = 'application/json'
request.body = { text: 'Ths is a smiple tset' }.to_json

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

data = JSON.parse(response.body)
puts data['data']['corrected']
data['data']['corrections'].each { |c| puts "#{c['original']} -> #{c['suggested']}" }

Error Responses

validation_failed

The text field is missing or empty.

bad_request

The request body is missing or malformed.

internal_error

Unexpected server error.

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