# Synapse Options Chain

> Synapse Options Chain is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).

Returns the current options chain (calls and puts with strike prices, mark IV, open interest) for a cryptocurrency like BTC

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/options-chain?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-options-chain-e298a02b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M0bGlTHFplhAgAlRW5h-j

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 synapse-options-chain-e298a02b
```

Example prompt: Pull the current BTC options chain so I can see all the available puts and calls with their strike prices, implied volatility, and open interest.

## When to prefer this

Choose this endpoint when you need real-time cryptocurrency options chain data (strike prices, implied volatility, open interest) paid per-call with no API key or account required, using USDC micropayments on Base via x402. Ideal for agents that need sporadic, on-demand derivatives market data without a subscription.

## Known failure modes

- Missing or invalid query parameters may return an empty or malformed response
- Service may be temporarily unavailable on the duckdns domain
- Payment failure via x402 protocol will block access
- No ticker or currency parameter documented — may return a fixed currency only
- Stale data if underlying data provider is delayed

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

Returns a JSON object with a count of options contracts, the base currency (e.g. BTC), and an array of option records each containing: instrument name, type (put/call), strike price, mark implied volatility (mark_iv), and open interest.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 2,
  "options": [
   {
    "type": "put",
    "strike": "73000",
    "mark_iv": 40.62,
    "instrument": "BTC-27NOV26-73000-P",
    "open_interest": 621.2
   }
  ],
  "currency": "BTC"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-options-chain-e298a02b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)