# ONE Engine Text Hashtag Extractor

> ONE Engine Text Hashtag Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Extracts relevant hashtags from a given text input, useful for tagging and categorizing content.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/hashtags/t8?utm_source=zero.xyz
- Price: $0.01/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-hashtag-extractor-247977a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wkgcvJAKk40TFassrGrQu

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-hashtag-extractor-247977a9 -d '<json body>'
```

Example prompt: Can you extract relevant hashtags from this caption I wrote: 'Just finished a 10km trail run at sunrise — feeling amazing and grateful for the outdoors!'?

## When to prefer this

Choose this endpoint when you need lightweight, low-cost hashtag extraction from text at $0.01 USDC per call via x402 on Base, especially within autonomous agent workflows that require pay-per-call metering. Prefer this over heavier NLP APIs when you need fast, affordable tagging without setting up complex ML pipelines.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input returns no hashtags
- Ambiguous or very short text may yield low-quality or generic hashtags
- Payment failure via x402 protocol results in 402 response and no data returned
- Network timeout on the Cloudflare Workers edge may return a 5xx error

## How this service works

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

## Output

Returns an object containing extracted hashtags derived from the input text, suitable for use in social media posts, content tagging systems, or categorization pipelines. The exact response structure may vary but typically includes an array or list of hashtag strings.

## 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-hashtag-extractor-247977a9/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)