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PennyRail Text Uppercase Converter
x402
PennyRail Text Uppercase Converter is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Converts an input string to uppercase characters via a paid micro-API endpoint
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the uppercase version of the submitted input string
Example use cases
Normalize user-submitted form input
“Take the user's name input 'john doe' and convert it to uppercase so it matches the required format on the form.”
Standardize product code labels
“I have a product code 'sku-abc-123x' that needs to be in all caps for our inventory system — can you uppercase it?”
Format a headline for display
“Please convert the article headline 'breaking news: markets recover after dip' to uppercase so it looks bold and prominent on the banner.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/text.uppercase--convert-to-uppercaseWhen to prefer
Use this endpoint when you need a simple, pay-per-use uppercase text conversion without setting up your own string processing logic, especially in agent workflows where lightweight micro-API calls with USDC micropayments (x402 protocol) are preferred
Side effects
- Missing 'input' field in request body returns a validation error
- Non-string input type may cause processing failure
- Payment not included or insufficient USDC results in 402 Payment Required
- Service downtime on Vercel hosting may return 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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