Estimate price impact before executing a swap. Params: ?tokenIn=0x...&tokenOut=0...
Estimate price impact before executing a swap. Params: ?tokenIn=0x...&tokenOut=0x...&amountUsd=1000. Checks pool depth on UniV3 + Aerodrome. Returns estimated slippage %, recommended max trade size, pool stats.
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://httpay.xyz/api/price-impact", {
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.
- Exact route checked
http 402 unparsed · accepts-missing
- Origin reachable
HEAD https://httpay.xyz/ returned 402.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
- Observed in 402-index
Discovered through bazaar.
- Registry record checked
Registry health: healthy.
EVIDENCE
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.