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NexusAPI Grammar Checker
x402
NexusAPI Grammar Checker is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.033122/call, status unknown (last checked 2026-09-14).
Checks and corrects grammar in a provided text string, returning suggestions or corrected output
Price / call$0.033122
Success—
StatusUnknown
How this service works
Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.
Output
The agent receives a response containing grammar analysis of the submitted text, which may include corrected text, identified grammatical errors, suggestions for improvement, or a grammatically cleaned version of the input string.
Example use cases
Email proofreading before sending
“Before I send this email to my client, can you check the grammar and fix any mistakes: 'Dear John, I wanted to follow up regarding our meeting from last week. We has reviewed your proposal and think it are a great fit for our team.'”
Student essay grammar check
“Can you check the grammar in this paragraph from my essay and tell me what's wrong: 'The effects of climate change is widespread and it affect many ecosystems. Scientists have been studied this phenomena for decades and their findings are alarming.'”
Social media post correction
“I want to post this on LinkedIn but I'm not sure the grammar is right — can you fix it: 'Me and my team has just launched our new product after working hard on it for the past six month.'”
Technical details
Endpoint
POSThttps://nexus-api-virid.vercel.app/api/ai/grammarWhen to prefer
Choose this endpoint when an agent needs a quick, pay-per-call grammar check without managing API keys. It is suitable for single text snippet correction tasks in automated pipelines, content generation workflows, or writing assistant agents operating on Base/USDC payments via x402.
Side effects
- Empty or missing query field returns an error
- Extremely long text may be truncated or fail
- Non-English text may produce inaccurate results
- Ambiguous or highly technical jargon may be incorrectly flagged
- Service unavailability returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Search query or input parameter |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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