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ONE Engine Hashtag Extractor (T5)
x402
ONE Engine Hashtag Extractor (T5) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-10-02).
Extracts relevant hashtags from a block of text using a T5-based model, returning suggested hashtags for content tagging or social media use.
Price / call$0.0025
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 suggested hashtags derived from the input text, likely as an array of hashtag strings (e.g. '#AI', '#MachineLearning') or a structured object with tags and possibly relevance metadata. The exact schema is open (additionalProperties: true).
Example use cases
Social media post tagging
“I just wrote this LinkedIn post about sustainable fashion — can you extract the most relevant hashtags from it so I can add them before publishing? Here's the text: 'Fast fashion is one of the largest polluters on the planet. Switching to sustainable brands isn't just a trend, it's a necessity...'”
Blog SEO hashtag generation
“I'm posting this tech article to Medium and want to maximize discoverability. Pull out the top hashtags from this text: 'Machine learning pipelines are increasingly being deployed at the edge, reducing latency and improving privacy for end users...'”
Marketing copy tag extraction
“Help me tag this product launch announcement with the right hashtags before we go live on Instagram. Here's the copy: 'Introducing the all-new SmartBrew Pro — the coffee maker that learns your preferences and brews your perfect cup every morning.'”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-token/hashtags/t5?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, low-cost automated hashtag extraction from arbitrary text at $0.0025 per call, especially in agentic workflows on Base/x402 where micropayment-per-call billing is preferred. Ideal for content pipelines, social media schedulers, or publishing agents that need to auto-tag posts at scale without a subscription model.
Side effects
- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input — may return empty hashtag list or error
- Ambiguous or too-short text — T5 model may return generic or low-quality hashtags
- Network or worker timeout on Cloudflare edge — transient 5xx error
- Payment failure via x402/Base — 402 response if USDC balance is insufficient
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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