# ONE Engine URL Analysis Pack Tier 3

> ONE Engine URL Analysis Pack 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).

Performs a tier-3 depth URL analysis on a given URL, returning structured insights via a pay-per-call x402 API on Base.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/url-analysis-pack/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-url-analysis-pack-tier-3-a22a7a5c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QfK8Uw6r_7tqOH8tk1qxW

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-url-analysis-pack-tier-3-a22a7a5c -d '<json body>'
```

Example prompt: Can you run a tier-3 analysis on https://example.com/some-page and tell me what you find about it?

## When to prefer this

Choose this endpoint when you need a deeper, structured analysis of a URL beyond basic metadata — particularly in agentic pipelines where pay-per-call economics matter and you need tier-3 depth insights. Prefer this over lighter tiers when richer output is required, and over general-purpose scrapers when you want a standardized JSON output format at low cost.

## Known failure modes

- Invalid or malformed URL input returns an error
- URL is unreachable or returns non-200 status, leading to incomplete analysis
- Payment not processed correctly via x402 protocol results in 402 response and no data
- Rate limiting or quota exceeded may return an error response
- Tier-3 analysis may return partial results if target page blocks crawlers

## How this service works

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

## Output

A JSON object containing the tier number (3) and a tier-dependent analysis result, which may include metadata, content signals, risk indicators, or structured information extracted from the given URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "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-url-analysis-pack-tier-3-a22a7a5c/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)