the402 endpoint detail

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api.agentfeeds.jp spreads summary

https://api.agentfeeds.jp/v1/dex/spreads/summary

payable

1-minute cross-venue spread statistics (bps). WETH/USDC across Uniswap v3 0.05%/0.3% and Aerodrome Slipstream on Base (on-chain mids); SOL/USDC as Jupiter aggregator mid vs executable 1-SOL quote (liquidity/impact measure, Powered by Jupiter). Descriptive statistics only; not investment advice. Free 15-min-delayed sample: /v1/sample/dex.spread_summary

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x67AC1E671E87b2c91847230748ed38a596013EA6
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
490 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:11:45.663Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.agentfeeds.jp%2Fv1%2Fdex%2Fspreads%2Fsummary"