# 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, $0.0005/call, status unknown (last checked 2026-10-02).

Extracts and identifies ISO 8601 formatted dates from a block of text

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-extract/iso-dates/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-iso-date-extractor-4aaede52
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WRAOFTUCqKkOKi-FM30C2

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-4aaede52 -d '<json body>'
```

Example prompt: Pull out all the ISO dates from this contract text: 'The agreement was signed on 2023-04-15 and expires on 2025-12-31, with a review period starting 2024-06-01.'

## When to prefer this

Choose this endpoint when you need to extract strictly ISO 8601 formatted dates (e.g. YYYY-MM-DD or datetime variants) from a block of text, particularly in agent pipelines requiring structured date data at very low cost per call. Prefer this over general-purpose NLP APIs when you want lightweight, deterministic date extraction without the overhead of a full language model.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected
- No ISO dates found in text — empty result set returned
- Malformed or missing 'text' field — validation error
- Payment failure via x402 — 402 response before processing begins
- Ambiguous date formats that are not strictly ISO 8601 may be omitted

## 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 8601 dates found within the submitted text, allowing agents to identify, collect, and act upon date values extracted from unstructured content.

## 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-4aaede52/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)