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gate402.app v1 best-swap
https://gate402.app/v1/best-swap
answers 402
Best-execution intel for a Base token: which DEX pool to trade on and the estimated price impact + total cost for a given trade size, ranked across pools, with a split suggestion. Constant-product estimate for trading agents — the execution plan, not a firm quote.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.02
- Network
- base
- Pay to
- 0x8E57BFDE053dBb6862991759c19affC5F383d5D0
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 326 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:10:58.291Z (32d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fgate402.app%2Fv1%2Fbest-swap"