the402 endpoint detail

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agent402.tools api options-summary

https://agent402.tools/api/options-summary

answers 402

A one-call options market summary for a currency: index price, DVOL, call and put open interest with the put/call ratio, total open interest, 24h volume, a per-expiry breakdown, the most active instruments and the perp's mark, funding and open interest. Use it when an agent needs the state of BTC or ETH options before drilling into a chain.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
112 ms
Payment options
13 usable of 13
Last checked
2026-09-06T01:16:42.259Z (2h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Foptions-summary"