# ONE Engine Word Bigrams Text Tokenizer

> ONE Engine Word Bigrams Text Tokenizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-02).

Extracts word-level bigrams (consecutive two-word pairs) from input text up to 50,000 characters

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/word-bigrams/t4?utm_source=zero.xyz
- Price: $0.0015/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-word-bigrams-text-tokenizer-f20521fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ah6P8mc1yFP4n5aNrP831

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-word-bigrams-text-tokenizer-f20521fa -d '<json body>'
```

Example prompt: Can you extract all the word bigrams from this article text: 'The quick brown fox jumps over the lazy dog. The dog barked loudly at the fox.'?

## When to prefer this

Choose this endpoint when you need word-level bigram tokenization specifically — not character n-grams or skip-grams — and want a cheap, pay-per-call option without a subscription. Ideal for NLP preprocessing pipelines, feature engineering for text classifiers, or co-occurrence analysis tasks where you need consecutive two-word pairs from text up to 50K characters.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input returns empty bigram set
- Payment failure via x402 protocol on Base blocks the call
- Malformed JSON request body returns error response
- Text with only one word produces no bigrams

## How this service works

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

## Output

Returns a JSON object containing word bigrams extracted from the input text — consecutive two-word token pairs derived by sliding a window of size 2 across the tokenized words in the text.

## 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-word-bigrams-text-tokenizer-f20521fa/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)