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whatchuneed Grammar Check API
x402
whatchuneed Grammar Check API is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).
Checks and corrects grammar in a given text string, returning corrected output
Price / call$0.03
Success—
StatusUnknown
How this service works
320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.
Output
Returns a result object containing the grammar-checked and corrected version of the input text, along with a status field indicating success or failure of the operation.
Example use cases
Proofreading an email draft
“Before I send this email, can you fix the grammar? Here's the draft: 'Dear Sir, I writed to enquire about the position that you have advertised last week.'”
Validating user-generated content
“Check the grammar of this user review before we publish it on our site: 'The product are very good and I enjoied using it alot.'”
Correcting a social media caption
“Fix any grammar mistakes in this caption before I post it: 'Me and my friends goes to the beach every summer, its always a great time.'”
Technical details
Endpoint
POSThttps://whatchuneed.vercel.app/api/util/grammarWhen to prefer
Choose this endpoint when you need a pay-per-call, no-subscription grammar correction service accessible via a single unified API. Ideal for agents that only occasionally need grammar checking without committing to a dedicated NLP service. Best suited for short-to-medium text strings where quick, per-use billing via the x402 protocol is preferred over bulk or batch grammar checking platforms.
Side effects
- Empty or missing 'input' field returns a validation error
- Extremely long text inputs may time out or return partial results
- Non-English or mixed-language text may produce inaccurate corrections
- Ambiguous sentences may be over-corrected or altered in unintended ways
- Network or payment processing failure returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | Request input |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| result | object | Response data |
| status | string |
Tags
x402
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