# ONE Engine Text Token Mentions Extractor (t9)

> ONE Engine Text Token Mentions Extractor (t9) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).

Extracts and returns mention tokens from a block of text up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/mentions/t9?utm_source=zero.xyz
- Price: $0.018/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-t9-33475263
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jh5nE3HqZgd9WzWM8DJiI

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-t9-33475263 -d '<json body>'
```

Example prompt: Can you extract all the mentions from this text for me? Here's the content: 'Today @alice and @bob discussed the launch with the @product-team and mentioned @cloudflare as a key partner — up to 50,000 characters of content is fine.'

## When to prefer this

Choose this endpoint when you need a cheap, pay-per-call mention extraction service without subscription overhead, especially in agentic pipelines using x402 micropayments on Base. Ideal for processing social content, forum posts, or articles where you need to identify referenced entities or tagged users quickly and at low cost.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected or truncated
- Empty or missing 'text' field returns a validation error
- Payment not attached or insufficient USDC causes a 402 Payment Required response
- Malformed JSON body results in a 400 error
- Text with no detectable mentions may return an empty list

## How this service works

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

## Output

A JSON object containing the extracted mention tokens found within the submitted text. The exact shape of the response is flexible (additionalProperties: true), but typically includes a list or map of identified mention tokens parsed from the input.

## 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-t9-33475263/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)