Options market summary

One-call options market summary for a currency on Deribit: index price, the DVOL implied-volatility index, call and put open interest with put/call ratio, total open interest in coins and USD, 24h volume, per-expiry open interest and volume, the top instruments by open interest, and the perpetual's mark, funding and open interest. Send POST /api/options-summary with no required fields (1 optional) and pay $0.005 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, currency, indexPrice, dvol, options and 2 more.

BTC and ETH carry the deep books; other currencies return whatever Deribit lists. Keyless public data.

Category: Crypto & onchain data · Tags: crypto derivatives options implied-volatility dvol open-interest deribit

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/options-summary \
  -H "Content-Type: application/json" \
  -d '{"currency":"BTC"}'

Without payment this returns HTTP 402 Payment Required with the exact price for options-summary; any x402 v2 or MPP client pays it and retries.

Example response

{
  "source": "deribit",
  "currency": "BTC",
  "indexPrice": 77232.62,
  "dvol": {
    "value": 41.74,
    "time": "2026-08-22T11:00:00.000Z"
  },
  "options": {
    "instruments": 900,
    "callOpenInterest": 150000,
    "putOpenInterest": 110000,
    "putCallOiRatio": 0.733,
    "totalOpenInterest": 260000,
    "openInterestUsd": 20000000000,
    "volume24hBase": 12000,
    "volume24hUsd": 900000000,
    "expiries": [
      {
        "expiry": "26AUG26",
        "expiresAt": "2026-08-26T08:00:00.000Z",
        "openInterest": 12000,
        "volume24hUsd": 5000000,
        "instruments": 60
      }
    ],
    "topByOpenInterest": [
      {
        "instrument": "BTC-25SEP26-120000-P",
        "expiry": "25SEP26",
        "strike": 120000,
        "type": "put",
        "openInterest": 174.5,
        "markIv": 62.03,
        "volume24hUsd": 0
      }
    ]
  },
  "perpetual": {
    "instrument": "BTC-PERPETUAL",
    "markPrice": 77263.43,
    "funding8h": 0.000195,
    "currentFunding": 0.000149,
    "openInterest": 903679080,
    "volume24hUsd": 664803850
  },
  "fetchedAt": "2026-08-22T12:00:00.000Z"
}

From an MCP client

catalog.call {
  "slug": "options-summary",
  "params": {
    "currency": "BTC"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for options-summary; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• Every field is optional. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key (Authorization: Bearer a402_...) also pays it.
• A GET or HEAD to /api/options-summary returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/options-summary", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "currency": "BTC"
  }),
});

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