# ONE Engine Text Token Mentions Extractor

> ONE Engine Text Token Mentions Extractor is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-02).

Extracts and counts token-level mentions from a block of text up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/mentions/t4?utm_source=zero.xyz
- Price: $0.0015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-text-token-mentions-extractor-8d38a68b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JjRHMTC3cCT4zozYmwXPk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability one-engine-text-token-mentions-extractor-8d38a68b -d '<json body>'
```

Example prompt: Scan this article text and extract all token mentions from it: 'Bitcoin surged past $100k today as Ethereum and Solana also climbed sharply, with analysts noting that BTC dominance hit a new high while ETH and SOL saw record volumes.'

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call token mention extraction from text without committing to a heavier NLP pipeline or subscription. Ideal for agent workflows that process variable volumes of text and want deterministic mention identification at low per-call cost ($0.0015 USDC) using x402 on Base. Prefer this over full NLP services when you only need mention-level extraction and not full sentiment, relation, or semantic parsing.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or missing 'text' field — validation error returned
- Malformed JSON request body — 400 error
- Payment not included or insufficient USDC via x402 — 402 Payment Required response
- No recognizable token mentions in text — empty or minimal result set returned

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a structured JSON object containing extracted token mentions found within the input text, including their occurrences and context metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text up to 50000 characters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-text-token-mentions-extractor-8d38a68b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)