DEX swap price quote — indicative UniswapV2 amount-out, price & price-impact for...

DEX swap price quote — indicative UniswapV2 amount-out, price & price-impact for any token pair from live on-chain reserves on Base/Ethereum

https://x402.professorsausages.com/swap-quote/quote/:chain/:tokenIn/:tokenOut

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://x402.professorsausages.com/swap-quote/quote/:chain/:tokenIn/:tokenOut", {
  method: "GET",
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

This sends no payment. Inspect the 402 response before adding a wallet-enabled client.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Exact route checked2026-07-10 15:05 UTC
not safely testable · unresolved-url-template
Origin reachable2026-07-10 15:04 UTC
OPTIONS https://x402.professorsausages.com/ returned 405.
Observed in cdp-bazaar2026-07-10 13:31 UTC
The registry record was observed and retained with provenance.
Observed in 402-index2026-07-10 13:31 UTC
Discovered through bazaar.
Registry record checked2026-07-08 02:15 UTC
Registry health: healthy.

EVIDENCE

cdp-bazaarobserved 2026-07-10 · https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources

402-indexobserved 2026-07-10 · https://402index.io/api/v1/services

origin checkOPTIONS https://x402.professorsausages.com/ → 405 on 2026-07-10

route quotenot invoked automatically · unresolved-url-template · 2026-07-10

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.

PAYMENT OPTIONS

baseexact0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913