# ONE Engine Word Bigrams Extractor

> ONE Engine Word Bigrams Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).

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

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/word-bigrams/t6?utm_source=zero.xyz
- Price: $0.004/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-extractor-77e8d767
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ze2eOkaxB6CRyhpMy65-q

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-extractor-77e8d767 -d '<json body>'
```

Example prompt: Extract all consecutive word pairs (bigrams) from this text for me: 'The quick brown fox jumps over the lazy dog. The dog barked loudly.'

## When to prefer this

Choose this endpoint when you need a fast, cheap, pay-per-call bigram extraction on Base with no subscription or API key overhead. Ideal for autonomous agent pipelines that process text on demand and need to pay micro-amounts per call via x402. Prefer this over self-hosted NLP libraries when you want zero infrastructure and deterministic per-call billing at $0.004 USDC.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Insufficient USDC balance or x402 payment failure — 402 Payment Required response
- Empty or missing 'text' field — validation error
- Non-string input for 'text' field — schema validation failure
- Rate limiting or worker timeout for very dense texts near the character limit

## 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 word bigrams (consecutive two-word pairs) extracted from the input text, suitable for NLP pipelines, frequency analysis, or feature engineering.

## 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-extractor-77e8d767/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)