# HALOWERK x402werk Benchmark Price Comparison

> HALOWERK x402werk Benchmark Price Comparison is a paid API for AI agents from x402.netzhandwerker.de, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-17).

Finds and ranks comparable paid API endpoints by price and description similarity, helping you benchmark your own endpoint's pricing against similar x402 offerings.

## Facts

- Endpoint: POST https://x402.netzhandwerker.de/benchmark/price?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-x402werk-benchmark-price-comparison-288623b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q2uui1Vadw1FURPGMDK7A

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-comparison-288623b1 -d '<json body>'
```

Example prompt: Can you benchmark my market data endpoint at https://x402.netzhandwerker.de/myapi against similar offerings — I charge $0.01 USDC — and show me the top 10 most comparable endpoints in the 'market data' category?

## When to prefer this

Use this endpoint when you need to benchmark or price-check a specific x402-compatible paid API endpoint against real market offerings. It is uniquely suited for operators launching new paid endpoints or adjusting pricing, and for agents doing competitive intelligence on the x402/USDC micropayment API ecosystem. Prefer this over generic web search when you want structured, scored, price-aware comparisons of live x402 endpoints.

## Known failure modes

- Invalid or unreachable resource_url returns an error fetching the 402 challenge
- Neither resource_url nor description provided — insufficient input to find comparables
- own_price_usdc format invalid (non-numeric string)
- max_comparables out of range (below 3 or above 50)
- No comparable endpoints found for a very niche category or description
- Payment of 0.006 USDC on Base Mainnet fails due to insufficient wallet balance or network issues

## How this service works

HALOWERK x402werk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.

## Output

A ranked list of up to 50 comparable x402-paid endpoints, sorted by description similarity, each showing their price in USDC, description, category, and similarity score — enabling direct price and feature benchmarking.

## 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-comparison-288623b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.netzhandwerker.de](https://www.zero.xyz/host/x402.netzhandwerker.de/llms.txt)