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24K Labs Grammar Fix
x402
24K Labs Grammar Fix is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).
Corrects grammar, spelling, and punctuation in text while preserving the author's original voice and meaning.
Price / call$0.006
Success—
StatusUnknown
How this service works
Correct grammar, spelling, and punctuation while preserving voice and meaning.
Output
Returns the input text with grammar, spelling, and punctuation errors corrected while preserving the author's original voice, tone, and intended meaning. The output is a clean, corrected version of the submitted text.
Example use cases
Proofreading a blog post draft
“Fix all the grammar and punctuation mistakes in this blog intro but keep my casual writing style: 'So your probably wondering why I decided to quit my job and travel the world — its not as crazy as it sound, trust me.'”
Polishing a professional email
“Clean up the grammar and spelling in this email I'm about to send to a client: 'Hi Sarah, I wanted to follow up on are meeting last week to discus the project timelines and weather we can still hit the deadlines we agrred on.'”
Correcting social media caption
“Fix any grammar or spelling errors in this Instagram caption without changing my vibe: 'Just spent the weekend hiking in the mountains and honestly its the best decison Ive made all year 🏔️ sometimes you just need to disconnect from everything.'”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/grammar-fixWhen to prefer
Choose this endpoint when you need lightweight, fast grammar and spelling correction that respects the author's voice — ideal for agent workflows that generate or collect user text and need to clean it up before display or publication. Prefer it over general LLM prompting when you want a consistent, pay-per-call proofreading step without managing a full LLM context.
Side effects
- Empty or missing text input returns an error
- Extremely long text may be rejected if it exceeds token/character limits
- Non-text binary content cannot be processed
- API key or payment authentication failure returns 402 or 401
- Rate limit exceeded returns 429
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string |
Output
Schema · Response
{
"type": "json",
"example": {
"corrected": "..."
}
}Tags
x402
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