# ONE Engine Text Token Identifier Extractor (t2)

> ONE Engine Text Token Identifier Extractor (t2) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0007/call, status unknown (last checked 2026-10-02).

Extracts token identifiers from a block of text, returning structured identifier data for downstream agent processing.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-token/identifiers/t2?utm_source=zero.xyz
- Price: $0.0007/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-identifier-extractor-t2-67990b5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Sx6uTcFeh_24zn1X9b5eA

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-identifier-extractor-t2-67990b5f -d '<json body>'
```

Example prompt: Scan this document and extract all token identifiers from it: 'Invoice #INV-2024-0042 references order ORD-9981 and customer ID CUST-00123. Payment token PT-XYZ987 was used.'

## When to prefer this

Choose this endpoint when you need to extract or enumerate token identifiers from free-form text as a lightweight, pay-per-call utility. It is ideal for autonomous agent pipelines that process documents, logs, or unstructured data and need to surface structured identifiers cheaply ($0.0007 USDC per call). Prefer it over heavier NLP services when the task is specifically identifier/token extraction rather than general entity recognition or sentiment analysis.

## Known failure modes

- Text exceeds 50000 character limit — request rejected or truncated
- Empty or missing 'text' field — validation error returned
- Payment failure via x402 — 402 response, call not processed
- Ambiguous or identifier-poor text — empty or minimal result set returned
- Service unavailability on Cloudflare Workers edge — 5xx error

## How this service works

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

## Output

A JSON object containing extracted token identifiers found within the input text, structured for downstream consumption by agents or pipelines. The exact fields are flexible (additionalProperties: true) but will reflect the identifiers detected in the provided text.

## 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-identifier-extractor-t2-67990b5f/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)