Best-route swap quote across DEXes (KyberSwap aggregator): expected output, USD in/out, price impact %, gasGET /api/exec/quote · x402 API by x402-services-production
Best-route swap quote across DEXes (KyberSwap aggregator): expected output, USD in/out, price impact %, gas cost, and the DEXes routed through. Send { chain, tokenIn, tokenOut, amountIn } (amountIn in smallest units). Quote only — never executes. Pre-trade routing for trading agents.
What does this x402 API do?
Best-route swap quote across DEXes (KyberSwap aggregator): expected output, USD in/out, price impact %, gas. This is an x402-gated GET API resource from x402-services-production. The latest safe exact-route check returned HTTP 404 on 2026-08-24. The listing records $0.004 USD-denominated per request on Base. No settled paid call has been verified.
- Published price
- $0.004 USD-denominated per request
- Networks
- Base
- Latest evidence
- The latest safe exact-route check returned HTTP 404 on 2026-08-24
- Resource ID
- 69dd500e8fba8d888f4decce
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://x402-services-production.up.railway.app/api/exec/quote", {
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.
- Observed in 402-index
Discovered through bazaar.
- Exact route checked
non 402
- Origin reachable
HEAD https://x402-services-production.up.railway.app/ returned 404.
- Registry record checked
Registry health: degraded.
What evidence supports this listing?
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. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is $0.004 USD-denominated per request. Raw protocol requirements remain visible below for implementation and audit use.