# ONE Engine ISO Date Extractor

> ONE Engine ISO Date Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).

Extracts and normalizes ISO-formatted dates from free-form text up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-extract/iso-dates/t9?utm_source=zero.xyz
- Price: $0.018/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-iso-date-extractor-b6b15b4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DDZxKkIfh_aW_WRBx507q

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-iso-date-extractor-b6b15b4f -d '<json body>'
```

Example prompt: Can you pull out all the dates from this contract text and give them back to me in ISO format? Here's the text: 'The agreement commences January 5th, 2024 and expires on the 31st of March, 2025, with a review due no later than December 1, 2024.'

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call ISO date extraction from unstructured text without standing up your own NLP pipeline. It is ideal for agents processing contracts, emails, reports, or articles where dates must be normalized to ISO format programmatically. At $0.018 USDC per call it is cost-effective for moderate volume. Prefer a local NLP library if you need to process thousands of documents per minute or require multilingual date support.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- No recognizable dates found in text — empty or null result returned
- Ambiguous date formats (e.g. '05/06/07') may be misinterpreted or skipped
- Non-English date expressions may not be recognized
- Payment failure via x402 protocol — 402 response, no extraction performed
- Malformed JSON request body — 400 error

## How this service works

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

## Output

A JSON object containing the ISO-formatted dates extracted from the input text, likely as an array of date strings (e.g. YYYY-MM-DD) identified from natural language expressions in the provided 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-iso-date-extractor-b6b15b4f/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)