# HALOWERK x402werk Benchmark Price

> HALOWERK x402werk Benchmark Price is a paid API for AI agents from x402.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).

Benchmarks the price of an x402 paid endpoint against comparable offers in the catalog, returning percentile pricing and market position.

## Facts

- Endpoint: POST https://x402.halowerk.com/benchmark/price
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-x402werk-benchmark-price-c92a7af8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CV2JNbmD0zelyn-1KSakd

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 halowerk-x402werk-benchmark-price-c92a7af8 -d '<json body>'
```

Example prompt: Benchmark my x402 endpoint at https://x402.halowerk.com/myendpoint — I charge $0.01 USDC — against up to 5 comparable offers in the 'web extraction' category so I can see where I stand in the market.

## When to prefer this

Use this endpoint when you need to benchmark an x402 micropayment API price against the live catalog of comparable paid endpoints. It is specifically designed for the x402 payment protocol ecosystem on Base Mainnet and understands 402 challenge responses natively, making it the right choice over generic price comparison tools when your endpoint uses USDC-based per-call pricing.

## Known failure modes

- No comparable endpoints found in catalog — sample_size returns 0 and percentiles are null
- resource_url is unreachable or returns no 402 challenge — own_price_source will reflect fallback or null
- Ambiguous or missing category — category_detected may be null, reducing comparison quality
- own_price_usdc not provided and no 402 challenge available — own_price returns null
- Payment of 0.006 USDC on Base Mainnet fails — request is rejected before processing

## How this service works

Reads the public x402 Bazaar catalogue and finds offers comparable to yours, either from a resource_url whose 402 challenge is fetched without paying, or from a category and description you supply. Every comparable offer is listed with its price, its provider host, a similarity score and the terms both sides share, so comparability is justified rather than asserted; the formula, its weights and the inclusion threshold are stated in the answer. Prices are aggregated as median, p25 and p75 over co

## Output

Returns the endpoint's own price, the median, 25th and 75th percentile prices across comparable offers, a market position label (below/market/above), a list of comparable endpoint objects ranked by similarity, the detected category, sample size, and any caveats or unavailable fields.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "category": {
   "type": "string",
   "maxLength": 120,
   "description": "Category of the endpoint, for example \"web extraction\" or \"market data\". Used as extra comparison terms."
  },
  "description": {
   "type": "string",
   "maxLength": 2000,
   "description": "What your endpoint delivers. Used to find comparable offers when no resource_url is given."
  },
  "resource_url": {
   "type": "string",
   "pattern": "^https?://",
   "maxLength": 2048,
   "description": "URL of your paid endpoint. Its 402 challenge is fetched without paying to read your own price and description."
  },
  "own_price_usdc": {
   "type": "string",
   "pattern": "^[0-9]+(\\.[0-9]+)?$",
   "description": "Your price in whole stablecoin units, if it should not be read from a challenge."
  },
  "max_comparables": {
   "type": "integer",
   "default": 25,
   "maximum": 50,
   "minimum": 3,
   "description": "How many comparable offers to list, highest similarity first."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-x402werk-benchmark-price-c92a7af8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.halowerk.com](https://www.zero.xyz/host/x402.halowerk.com/llms.txt)