# HALOWERK marktwerk – Crypto Options Chain Lookup

> HALOWERK marktwerk – Crypto Options Chain Lookup is a paid API for AI agents from markt.netzhandwerker.de, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Returns a filtered list of BTC or ETH options contracts from Deribit for a specified expiry and moneyness range

## Facts

- Endpoint: POST https://markt.netzhandwerker.de/options
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-marktwerk-crypto-options-chain-lookup-a2003bcf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DcClVsm8FFDl3Z9k03axM

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-marktwerk-crypto-options-chain-lookup-a2003bcf -d '<json body>'
```

Example prompt: Pull the nearest BTC options expiry from Deribit, showing only strikes within 25% of the forward price.

## When to prefer this

Use this endpoint when you need a filtered, ready-to-use options chain for BTC or ETH sourced from Deribit, especially when you want to narrow strikes by proximity to the forward price. Prefer it over raw Deribit API access when you want a simple, pay-per-call interface without managing API keys, or when operating in an x402-enabled agent context with USDC micropayments on Base.

## Known failure modes

- Invalid underlying symbol returns validation error
- Moneyness range outside 0.1–1.0 bounds causes rejection
- Malformed or past date for expiry may return empty results or error
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Deribit data feed unavailability causes upstream error

## How this service works

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

## Output

A list of options contracts for the requested underlying (BTC or ETH) filtered by expiry and moneyness range, sourced from Deribit. Each entry likely includes strike price, expiry date, contract type (call/put), and related market data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "expiry": {
   "type": "string",
   "default": "naechste",
   "description": "naechste for the nearest expiry, an exact date as YYYY-MM-DD, or alle for every open expiry."
  },
  "underlying": {
   "enum": [
    "BTC",
    "ETH",
    "btc",
    "eth"
   ],
   "type": "string",
   "description": "Underlying. Deribit lists crypto options for BTC and ETH."
  },
  "moneyness_range": {
   "type": "number",
   "default": 0.3,
   "maximum": 1,
   "minimum": 0.1,
   "description": "How far strikes may sit from the forward to be listed, as a fraction. 0.3 means plus or minus 30 percent."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-marktwerk-crypto-options-chain-lookup-a2003bcf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from markt.netzhandwerker.de](https://www.zero.xyz/host/markt.netzhandwerker.de/llms.txt)