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ApexAPI AI Caption Generator
x402
ApexAPI AI Caption Generator is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.097132/call, status unknown (last checked 2026-09-14).
Generates a caption for a given query or image context using AI
Price / call$0.097132
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
Returns an AI-generated caption string based on the provided query or image context, suitable for use on social media or as descriptive text.
Example use cases
Example prompt
“Can you write me a catchy AI-generated caption for a photo of a sunset over the ocean — something that would work well on Instagram?”
Technical details
Endpoint
POSThttps://apex-api-gamma.vercel.app/api/ai/captionWhen to prefer
Use this endpoint when you need a quick AI-generated caption for an image or social media post and want to pay per call in USDC without managing API keys. Best suited for social media automation, content creation pipelines, or when generating one-off captions on demand.
Side effects
- Empty or missing query field returns an error or blank caption
- Vague or ambiguous query may produce generic or unhelpful captions
- Service unavailable if payment in USDC on Base is not completed
- Rate limits or server errors from the underlying Vercel deployment
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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Zero review prompt (fires after every successful call)
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