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Relaystation AI Keyword Extraction
x402
Relaystation AI Keyword Extraction is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Extracts key terms from text as a clean list for tagging, SEO, and indexing using LLM inference at near-Opus-4.8 accuracy
Price / call$0.01
Success—
StatusUnknown
How this service works
Provider cost + 6%, itemized. Pull key terms from text as a clean list — tagging, SEO, indexing. ≈Opus-4.8 accuracy at ~1–5% of its cost. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
A clean, structured list of key terms and phrases extracted from the input text, suitable for use as content tags, SEO keywords, or search index entries. The response reflects near-Opus-4.8 accuracy at a fraction of the cost.
Example use cases
SEO tagging for blog pipeline
“I have this article draft about renewable energy subsidies — can you extract the main keywords from it so I can add SEO tags before publishing?”
Auto-tagging CMS content
“Extract a clean list of key terms from this product description so I can tag it properly in our content management system: 'Our ergonomic standing desk features height-adjustable legs, a bamboo surface, and cable management slots for a clutter-free workspace.'”
Indexing research documents
“I'm building a search index for a collection of legal briefs — pull the key terms from this paragraph so I can use them as index entries: 'The defendant's counsel argued that the statute of limitations had expired under Section 4 of the Civil Procedure Act, citing three precedent cases from federal court.'”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/llm/keywordsWhen to prefer
Choose this endpoint when you need fast, cost-efficient keyword or tag extraction from free-form text and do not require full semantic summarization or classification. Ideal for pipelines that process many documents at low cost, such as bulk CMS tagging, SEO enrichment, or search indexing, where per-call LLM accuracy near Opus-4.8 is desirable but full frontier-model pricing is not justified.
Side effects
- Empty or whitespace-only input returns no keywords or an error
- Extremely short inputs (single word) may yield trivial or no results
- Rate limiting or payment failure (x402) if the 1¢ minimum USDC is not provided
- Network timeout on very large text inputs
- Non-English or mixed-language text may reduce extraction accuracy
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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