# ONE Engine Text Analysis Tier 3

> ONE Engine Text Analysis Tier 3 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0012/call, status unknown (last checked 2026-10-02).

Runs a tier-3 depth text analysis on a given string, returning a structured result via pay-per-call x402 API on Base.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/text-analysis/t3?utm_source=zero.xyz
- Price: $0.0012/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-analysis-tier-3-72534a30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EcptzdALG4WH1lFUn5MjE

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-analysis-tier-3-72534a30 -d '<json body>'
```

Example prompt: Can you run a tier-3 deep text analysis on this paragraph: 'Our product launch exceeded expectations, but supply chain delays have affected fulfillment timelines significantly'?

## When to prefer this

Choose this endpoint when you need deeper, higher-tier text analysis compared to lower-tier siblings (t1, t2), and you need a low-cost, pay-per-call model without subscription overhead. Ideal for autonomous agents making sporadic or high-volume text analysis calls on Base using USDC microtransactions via x402.

## Known failure modes

- Missing or empty 'text' field returns a validation error
- Insufficient USDC balance or failed x402 payment causes a 402 Payment Required response
- Overly long text strings may be truncated or rejected
- Network timeout from Cloudflare Worker under high load
- Malformed JSON body returns a 400 error

## How this service works

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

## Output

Returns a JSON object with a 'tier' field (value 3) and a 'result' field containing the tier-dependent analysis output for the submitted text. The exact shape of 'result' varies based on the tier's analytical depth.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 3,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-text-analysis-tier-3-72534a30/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)