the402 endpoint detail

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yieldsignal.vercel.app persistence usdc-base-yield

https://yieldsignal.vercel.app/persistence/usdc-base-yield

answers 402

How long a USDC leadership call actually holds, from hourly on-chain attestations (EAS): median lead duration, survival at 6/24/72h, how much of the rotation is the same two protocols trading places, and what chasing the leader is worth per $10k before gas. Also reports whether a wider lead lasts longer — measured, and it does not. Observed history with sample sizes, never a forecast. Verified per

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$1.00
Network
base
Pay to
0x561143BFE9E2D975D92e915B8EfFEAa54119472a
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
199 ms
Payment options
2 usable of 2
Last checked
2026-08-15T14:41:03.385Z (7d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fyieldsignal.vercel.app%2Fpersistence%2Fusdc-base-yield"