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ONE Engine Text Token Mentions Extraction (T5)
x402
ONE Engine Text Token Mentions Extraction (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 and returns token-level mention entities from a given text string using a T5-style model.
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 the token-level mentions detected in the submitted text, including the referenced entities and their spans or labels as identified by the T5 model.
Example use cases
Entity mention extraction from news
“I have this Reuters article about the Fed meeting — can you pull out all the token-level mentions from it? Here's the text: 'Federal Reserve Chair Jerome Powell signaled yesterday in Washington that rate cuts could begin as early as September, citing comments from Treasury Secretary Janet Yellen.'”
Detecting brand references in reviews
“Go through this product review and extract every mention you find — people, companies, places, anything referenced: 'I bought this at the Best Buy in Austin and the Geek Squad rep, Marcus, said it was compatible with my Dell laptop and Google Drive setup.'”
Preprocessing text for knowledge graph
“Before I build my knowledge graph, I need all the entity mentions extracted from this research abstract — here it is: 'MIT researchers collaborated with IBM and Stanford to study the effect of CRISPR on E. coli strains in a 2023 trial funded by the NIH.'”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-token/mentions/t5?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, low-cost per-call token-level mention extraction from arbitrary text up to 50,000 characters, especially in agentic pipelines where cost-efficiency matters and you are already operating on the Base blockchain with x402 micropayments. Prefer it over heavier NLP APIs when you need fast, pay-per-use extraction without subscriptions.
Side effects
- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or whitespace-only text input — may return empty mentions list
- Malformed JSON body — 400 error
- Payment not attached or insufficient USDC balance — 402 Payment Required
- Model ambiguity on short or context-free text — low-quality mention extraction
- Rate limits or worker timeout on very long texts near the character cap
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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