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ONE Engine Hashtag Extractor
x402
ONE Engine Hashtag Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0065/call, status unknown (last checked 2026-10-02).
Extracts all hashtags from a given block of text up to 50,000 characters
Price / call$0.0065
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns a structured object containing the list of hashtags found in the input text, likely as an array of strings with the leading '#' symbol or the tag words themselves.
Example use cases
Social media content audit
“Here's a dump of 200 tweet texts from our brand account — can you extract every hashtag that appears across all of them so I can see which tags we've been using?”
Hashtag compliance check for campaign
“We have a sponsored post draft that's supposed to include our required campaign hashtags — can you extract all the hashtags from this text so I can verify they're all there: 'Just tried the new smoothie bowl at @GreenBowlCo and it's amazing! #GreenBowlPartner #HealthyEats #SummerVibes #Ad'?”
User-generated content tagging pipeline
“I'm processing user comments from our community forum to build a hashtag index — can you extract all hashtags from this comment: 'This workout destroyed me in the best way 💪 #LegDay #GymLife #FitnessCommunity #NoPainNoGain'?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-extract/hashtags/t7?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, low-cost, pay-per-call solution to extract hashtags from text without spinning up your own NLP pipeline. Ideal for agents processing social media content, moderating user-generated text, or building hashtag indexes at scale where cost-per-call matters. Prefer this over general NLP APIs when you specifically need hashtag extraction and want to pay micro-amounts per call via x402 on Base.
Side effects
- Text exceeds 50,000 character limit — request rejected
- Empty or missing 'text' field — validation error
- Text contains no hashtags — returns empty list
- Payment failure via x402 — 402 response, no extraction performed
- Malformed JSON body — 400 error
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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