# ONE Engine Text Mentions Extractor

> ONE Engine Text Mentions Extractor 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).

Extracts entity mentions (people, organizations, places, topics, etc.) from a block of text up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-extract/mentions/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-mentions-extractor-2fb5aaaa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fMg_PTnkyEcZdb7uUesxN

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-mentions-extractor-2fb5aaaa -d '<json body>'
```

Example prompt: Extract all mentions of people, organizations, and places from this article text: 'Apple CEO Tim Cook met with President Biden at the White House last Tuesday to discuss semiconductor policy with Intel and TSMC representatives.'

## When to prefer this

Choose this endpoint when you need a cheap, low-latency, pay-per-call mention extraction from raw text without managing a full NLP pipeline or subscription. At $0.0005 USDC per call it is cost-effective for high-volume agent workflows. Prefer it over heavier NER APIs when you have text already in hand (not a URL to scrape) and need entity mentions quickly with no setup overhead.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input — may return empty mentions array
- Malformed JSON body — 400 error
- Payment failure via x402 on Base — 402 response if wallet balance insufficient
- Ambiguous or low-quality text may result in missed or spurious mentions
- Service unavailability on Cloudflare Workers edge — 503 or timeout

## How this service works

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

## Output

A JSON object containing the extracted entity mentions found in the input text, including spans, labels, or metadata about each mention (exact schema is open/additionalProperties:true, so fields may vary but typically include mention text, type, and position).

## 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-mentions-extractor-2fb5aaaa/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)