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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 2026-09-13).
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 corrected version of the input text with grammar, spelling, and punctuation errors fixed, while preserving the original author's voice, tone, and intended meaning.
Example use cases
Polish a professional email draft
“Fix the grammar and punctuation in this email draft but keep my tone: 'Hi Sarah, I wanted to follow up about the proposal we discussed last week. I think their are a few thing's we should revisit before moving foward with the client.'”
Proofread a blog post excerpt
“Correct any grammar or spelling mistakes in this blog intro without changing my casual writing style: 'If your looking for the best way to loose weight, your probly overthinking it. Alot of people make this to complicated then it needs to be.'”
Clean up a social media caption
“Fix the grammar and punctuation in this Instagram caption while keeping the vibe the same: 'Had the most amazin time at the beach yesterday, the sun was shining and i couldnt of asked for better weather its moments like these that makes life worth living'”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/grammar-fixWhen to prefer
Choose this endpoint when you need automated grammar, spelling, and punctuation correction that preserves the author's original voice — ideal for pipelines processing user-generated content, draft documents, emails, or social posts where meaning and tone must not be altered. Prefer it over general rewriting or paraphrasing APIs when the goal is correction rather than transformation.
Side effects
- Empty or missing input text returns an error
- Extremely long texts may exceed payload limits
- Ambiguous phrasing may be over-corrected or under-corrected
- Non-English text may not be corrected accurately
- Payment failure (insufficient USDC balance) blocks the request via x402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string |
Output
Schema · Response
{
"type": "json",
"example": {
"corrected": "..."
}
}Tags
x402
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