# ONE Engine Alphanumeric T5 Text Tokenizer

> ONE Engine Alphanumeric T5 Text Tokenizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-10-02).

Tokenizes input text into alphanumeric tokens using a T5-style tokenization scheme, returning token data for up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/alphanumeric/t5?utm_source=zero.xyz
- Price: $0.0025/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-alphanumeric-t5-text-tokenizer-42e5cb86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_23ntNBCsFgZ56Ewfp-DSd

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-alphanumeric-t5-text-tokenizer-42e5cb86 -d '<json body>'
```

Example prompt: Tokenize this paragraph into alphanumeric T5 tokens: 'The quick brown fox jumps over the lazy dog. Machine learning models require tokenized input before processing.'

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call T5-style alphanumeric tokenization without standing up your own NLP infrastructure. It is well-suited for agents that occasionally need token counts or token encodings and want to avoid per-seat SaaS subscriptions. The x402 micropayment model at $0.0025 USDC makes it economical for sporadic or burst workloads.

## Known failure modes

- Text exceeding 50,000 characters may be rejected or truncated
- Missing required 'text' field returns a validation error
- Payment failure (402) if x402 USDC micropayment on Base is not completed
- Empty string input may return an empty token list or error
- Non-alphanumeric-only content may be filtered or stripped before tokenization

## 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 alphanumeric T5 tokenization of the submitted text, likely including token arrays, token IDs, or token count metadata derived from the T5 tokenization scheme applied to the input string.

## 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-alphanumeric-t5-text-tokenizer-42e5cb86/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)