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x402.donnyautomation.com optimism slippage
https://x402.donnyautomation.com/optimism/slippage
payable
Price impact and slippage for a specific trade size on OP Mainnet - what will my trade actually get, not just the spot price. Simulates the swap against live reserves across SushiSwap and Uniswap v3 fee tiers and returns the best execution venue, amount out, price impact in bps, the pool fee separately, and what correct routing saves versus picking the best quoted price. Pre-trade execution check
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.003
- Network
- base
- Pay to
- 0x2740651e046c59aB2A6510401140643292d3a96F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 85 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:16:00.638Z (3d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.donnyautomation.com%2Foptimism%2Fslippage"