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ONE Engine Text Hashtag Extractor (t4)
x402
ONE Engine Text Hashtag Extractor (t4) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-02).
Extracts relevant hashtags from a given block of text up to 50,000 characters
Price / call$0.0015
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns a JSON object containing extracted or suggested hashtags derived from the input text, representing the key topics, themes, and concepts present in the content.
Example use cases
Social media post tagging
“Here's my Instagram caption about a new product launch — can you extract the best hashtags for it? 'Introducing our new eco-friendly water bottle made from 100% recycled ocean plastic. Stay hydrated, save the planet.'”
Blog article SEO hashtag discovery
“I just wrote a 2,000-word blog post about remote work productivity tips — can you pull out the most relevant hashtags I should use when sharing it on LinkedIn and Twitter?”
Automated content pipeline tagging
“For every article we publish, I want to automatically generate hashtags from the article body so our social scheduler can attach them. Here's today's article text — go ahead and extract the hashtags.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-token/hashtags/t4?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, pay-per-call hashtag extraction service for autonomous agents operating on Base via x402, especially for pipeline automation where cost per call matters. Ideal when you need hashtags programmatically from arbitrary text without managing a full NLP platform subscription.
Side effects
- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input returns no hashtags or an error
- Text in rare or unsupported languages may produce low-quality or no hashtags
- Payment failure via x402 on Base results in 402 response and no processing
- Ambiguous or very short text may yield generic or low-relevance hashtags
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Text up to 50000 characters |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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