# 24K Labs Grammar Fix

> 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.

## Facts

- Endpoint: POST https://api.24klabs.ai/api/grammar-fix
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/24k-labs-grammar-fix-72887106
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OgA_6YCWaXCZap4Qvhuxy

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 24k-labs-grammar-fix-72887106 -d '<json body>'
```

Example prompt: Can you fix the grammar, spelling, and punctuation in this paragraph without changing how I sound: 'Their going to the store but dont have no money, so they wont be able to buy alot of thing'?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "corrected": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/24k-labs-grammar-fix-72887106/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.24klabs.ai](https://www.zero.xyz/host/api.24klabs.ai/llms.txt)