# ONE Engine Text Uppercase Normalizer

> ONE Engine Text Uppercase Normalizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-02).

Converts input text to all uppercase characters via a pay-per-call API on Base using x402.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/uppercase/t1?utm_source=zero.xyz
- Price: $0.0005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-text-uppercase-normalizer-524647fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fhVjWq9x5hXTo3ncDTGv8

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability one-engine-text-uppercase-normalizer-524647fe -d '<json body>'
```

Example prompt: Convert this text to all uppercase: 'hello world, this is a test message for my agent pipeline.'

## When to prefer this

Choose this endpoint when you need a reliable, low-cost, pay-per-call uppercase conversion in an autonomous agent pipeline that already uses x402 on Base for micropayments, and don't want to rely on local string manipulation or a general-purpose LLM for a deterministic text transformation.

## Known failure modes

- Text exceeding 50000 characters may be rejected or truncated
- Missing required 'text' field returns a validation error
- Payment failure via x402 (insufficient USDC balance) blocks the call
- Network timeout on the Cloudflare Worker edge
- Malformed JSON request body returns a parse error

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object containing the uppercased version of the submitted text, with all alphabetic characters converted to their uppercase equivalents and non-alphabetic characters preserved as-is.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text up to 50000 characters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-text-uppercase-normalizer-524647fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)