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ClearCheck Keyword Extractor
x402
ClearCheck Keyword Extractor is a paid API for AI agents from loonie-toll.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Extracts and ranks the most important keywords and key phrases from a text passage, returning them ordered by relevance for tagging, search, and clustering use cases.
Price / call$0.01
Success—
StatusUnknown
How this service works
Ranked keywords and key phrases from a passage, most important first. For tagging, search and clustering.
Output
Returns a ranked list of keywords and key phrases extracted from the input text, ordered from most to least important, along with the count of keywords returned, the model used for extraction, and metadata fields such as source and disclaimer.
Example use cases
Auto-tagging blog content pipeline
“Extract the top 8 keywords from this blog post so I can automatically tag it in our CMS: 'Climate change is accelerating glacier retreat in the Alps, threatening freshwater supplies for millions of Europeans downstream.'”
Search index enrichment for documents
“I need the 12 most important keywords from this product description to improve its search indexing: 'The XR-500 is a wireless noise-cancelling headphone with 40-hour battery life, Bluetooth 5.2, and adaptive EQ optimized for music and calls.'”
Topic clustering for news articles
“What are the top 5 key phrases in this news excerpt so I can cluster it with related articles? 'The Federal Reserve raised interest rates by 25 basis points today, citing persistent inflation and a resilient labor market despite global economic uncertainty.'”
Technical details
Endpoint
GEThttps://loonie-toll.onrender.com/keywordsWhen to prefer
Choose this endpoint when you need fast, ranked keyword and key phrase extraction from a text passage for downstream use cases like content tagging, search indexing, or document clustering. It is ideal for passages up to 6000 characters where you want a ranked list rather than full NLP analysis. Prefer this over generic NLP APIs when you need a simple, pay-per-call pricing model with no setup and immediate results.
Side effects
- Text exceeds 6000 character limit — request rejected or truncated
- Empty or whitespace-only text input — may return empty keyword list
- Count parameter set to 0 or negative — may return default 8 keywords or error
- Network timeout on Render.com cold-start — retry after brief delay
- Non-English text may yield lower-quality keyword extraction depending on underlying model
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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