# ONE Engine Word Bigram Extractor

> ONE Engine Word Bigram Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Extracts all consecutive word bigrams (two-word pairs) from a given text input of up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/word-bigrams/t8?utm_source=zero.xyz
- Price: $0.01/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-bigram-extractor-13f6b611
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nC3NPXpIjmy1KZhxBqCx0

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-bigram-extractor-13f6b611 -d '<json body>'
```

Example prompt: Extract all word bigrams from this text: 'The quick brown fox jumps over the lazy dog' — I need every consecutive two-word pair in the sequence.

## When to prefer this

Choose this endpoint when you need fast, pay-per-call word bigram extraction without managing your own NLP infrastructure. Ideal for autonomous agents that need cheap, on-demand tokenization into two-word pairs for downstream NLP tasks like feature engineering, phrase mining, or search indexing. Prefer this over full NLP pipeline services when you only need bigrams and want minimal cost ($0.01/call) and no subscription overhead.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input yields an empty bigram list
- Payment failure via x402 protocol prevents API access
- Non-string or missing 'text' field returns a validation error
- Highly repetitive or single-word input produces minimal or degenerate 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 the list of word bigrams extracted from the input text — each bigram being a consecutive pair of words (tokens) as they appear in sequence through the document. The exact structure of the response object may vary, but typically includes the bigram sequences derived from the tokenized input.

## 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-bigram-extractor-13f6b611/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)