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ONE Engine Text Lowercase Converter
x402
ONE Engine Text Lowercase Converter is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).
Converts a given text string to all lowercase characters via a pay-per-call API endpoint.
Price / call$0.0009
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object containing the field 'text' with the value of the input string converted entirely to lowercase characters. For example, input 'Hello World' returns {"text": "hello world"}.
Example use cases
Normalize user input before search
“Take this user-submitted search query — 'MacBook Pro DEALS Sale' — and convert it to all lowercase so I can compare it consistently against my product index.”
Sanitize email address casing
“I need to normalize this email address to lowercase before storing it: 'JohnDoe@Example.COM' — can you convert it?”
Standardize tag or label casing
“Convert this category label to lowercase for me: 'ELECTRONICS & Home Appliances' — I want consistent formatting across all my tags.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/text/lowercase?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need a simple, cheap, reliable, per-call text lowercasing operation within an autonomous agent pipeline that already supports x402 micropayments on Base. It's ideal for lightweight text normalization steps in agent workflows where spinning up a full NLP library would be overkill and cost predictability per call matters.
Side effects
- Missing 'text' field in request body — likely returns a 400 or validation error
- Payment failure or insufficient USDC balance — returns HTTP 402 with payment requirements
- Empty string input may return an empty string output without error
- Non-string value for 'text' field may result in a type error or unexpected behavior
- Network timeout on the Cloudflare Workers edge — transient 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string |
Output
Schema · Response
{
"type": "json",
"example": {
"text": "hello world"
}
}Tags
x402
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