Check Spelling Instantly
Submit any English text and get a corrected version with per-word suggestions — powered by LanguageTool. No API key needed for the demo.
Trusted by teams building writing tools
Catches Every Mistake
Scans input text using LanguageTool and returns every misspelled word with its position, the best correction, and up to 3 ranked alternatives.
{
"corrected": "This is a simple test",
"corrections": [
{
"original": "smiple",
"suggested": "simple",
"suggestions": ["simple", "smile"],
"position": 9
}
]
}
A Single POST Request
Send text, get back the corrected version plus a list of individual corrections. No multi-step workflows, no client-side dictionaries.
POST /v1/text/spellcheck
Host: requiems.xyz
requiems-api-key: YOUR_API_KEY
Content-Type: application/json
{"text": "Ths is a smiple tset"}
Built for Quality Writing Workflows
From content creation to form validation — if text passes through your product, this API keeps it error-free.
Power writing assistants
Integrate spell checking into text editors, note apps, and publishing platforms. Highlight errors and offer one-click fixes inline.
Clean up user-generated content
Automatically correct spelling in comments, reviews, and articles before they go live. Improve content quality without manual review.
Sanitize form inputs
Check spelling in submitted text fields — message bodies, descriptions, bio text — and provide real-time correction suggestions.
Support learning platforms
Help students catch spelling mistakes in assignments and essays. Return suggestions alongside grades for actionable feedback.
Improve support tickets
Clean up typos in incoming support messages before routing to agents. Improve readability and reduce back-and-forth for clarification.
Polish AI-generated text
Run model outputs through spell check before displaying to users. Remove typos and improve fluency of generated content automatically.
Pair It With Other APIs
Spell check is more effective as part of a text-processing pipeline. Combine it with other Requiems APIs for deeper content analysis.
Benefit: Clean up spelling errors first, then run sentiment analysis on the corrected text for more accurate tone classification.
Outcome: More reliable sentiment scores on cleaned text.
Benefit: Detect the input language before spell-checking. Route text to the right language model automatically.
Outcome: Language-aware correction before downstream NLP.
Benefit: Normalize email addresses and check spelling in the associated display name or message body in one pipeline.
Outcome: Cleaner contact data and message text in the same flow.
Frequently Asked Questions
Still have questions? Contact support
Polish your text with Requiems.
One API key. Spell check, email validation, sentiment analysis, and 50+ other APIs for building smarter products.