# India Data Gateway — Options Chain (F&O Greeks)

> India Data Gateway — Options Chain (F&O Greeks) is a paid API for AI agents from gateway.hillguava.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Retrieves live options chain data for an Indian market symbol (e.g. NIFTY), including spot price, strikes, expiry, and Black-Scholes Greeks such as delta and gamma.

## Facts

- Endpoint: GET https://gateway.hillguava.xyz/options/%7Bsymbol%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/india-data-gateway-options-chain-f-o-greeks-453c05bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Yose-MTHZsoBVqwE4RUQo

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 india-data-gateway-options-chain-f-o-greeks-453c05bc
```

Example prompt: Pull up the live NIFTY options chain for the June 2026 expiry — I want to see all strikes around 25000 along with their call delta and gamma values.

## When to prefer this

Choose this endpoint when you need live or near-live Indian equity derivatives (F&O) data including options Greeks for NSE-listed instruments like NIFTY or BANKNIFTY, with pay-per-call USDC billing and no account setup. Prefer over alternatives when you need Black-Scholes computed Greeks (delta, gamma) rather than raw quote data alone.

## Known failure modes

- Unknown or unsupported symbol returns an error or empty response
- Network or gateway downtime results in a timeout
- Payment failure on Base network blocks the request
- Malformed symbol path parameter causes a 400-level error
- Stale or delayed market data if called outside Indian market hours

## How this service works

The India data layer for AI agents. Pay only for the calls you make — no API keys, no accounts, no minimums, no rate limits. One x402 origin covering Indian weather (forecasts, monsoon), markets (stocks, indices, F&O with Black-Scholes Greeks, historical, mutual funds), RBI macro, identity/format verification (IFSC, pincode, GSTIN), NSE market holidays, panchang (Hindu almanac), and live cricket scores. Settle per call in USDC on Base.

## Output

Returns the current spot price of the underlying index, the expiry date, and a list of strikes each with Black-Scholes Greeks (call delta, gamma, and potentially others). Pays $0.05 USDC per call via x402 on Base, no API key required.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spot": 25234.85,
  "expiry": "24-Jun-2026",
  "symbol": "NIFTY",
  "strikes": [
   {
    "greeks": {
     "gamma": 0.00096,
     "call_delta": 0.53
    },
    "strike": 25000
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/india-data-gateway-options-chain-f-o-greeks-453c05bc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.hillguava.xyz](https://www.zero.xyz/host/gateway.hillguava.xyz/llms.txt)