# ONE Engine Text Domain Extraction (T1)

> ONE Engine Text Domain Extraction (T1) 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 domain names or domain-related entities from a block of text using a pay-per-call x402 API on Base.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-extract/domains/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-domain-extraction-t1-10bb2068
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SC6P1uP6vitkS59_kV8UM

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-domain-extraction-t1-10bb2068 -d '<json body>'
```

Example prompt: Extract all domain names mentioned in this text: 'We visited google.com, then checked out openai.com and anthropic.com before landing on cloudflare.com for infrastructure help.'

## When to prefer this

Choose this endpoint when you need a cheap, lightweight, pay-per-call extraction of domain names from raw text without standing up your own NLP pipeline. At $0.0005 USDC per call it is cost-effective for high-volume agent workflows. Prefer it over general-purpose LLM extraction when you want a deterministic, structured output and want to avoid token costs. Best suited for autonomous agents on Base that already use x402 for micropayments.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected
- Empty or missing 'text' field — validation error
- Payment failure via x402 — 402 response returned before processing
- No domains found in text — empty result set returned
- Malformed input encoding — parsing error

## How this service works

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

## Output

A structured JSON object containing extracted domain names and/or domain-related entities found within the submitted text. The exact response shape is open (additionalProperties: true), so it may include lists of domains, counts, positions, or other metadata depending on the service's parsing logic.

## 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-domain-extraction-t1-10bb2068/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)