the402 endpoint detail

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asistent-crypto.vercel.app data orderbook-depth

https://asistent-crypto.vercel.app/api/x402/data/orderbook-depth

answers 402

What a trade actually costs before it is placed: live order book depth on Bybit and OKX, walked at your size. Give it a notional in dollars and it returns the average fill price, slippage against mid in basis points and dollars, the spread, the depth within 1% of mid, and which venue is cheaper for that exact size — separately for buying and selling. A size the book cannot absorb is reported as un

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xbeeBd30639E99bbcE11FAA2b463fCCCf6215831b
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
71 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:21:10.359Z (32d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fasistent-crypto.vercel.app%2Fapi%2Fx402%2Fdata%2Forderbook-depth"