Solana swap quote (Jupiter)

Executable swap quote on Solana from Jupiter's aggregator: input and output mint, amount in base units, slippage in bps - returns out amount, minimum out after slippage, price impact percent, the routed DEX labels in hop order with split percentages, the USD value of the swap and the context slot. A real multi-hop route across Solana DEX liquidity, so the number reflects depth, not a spot price. Quote only - nothing is signed or sent. Keyless.

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Input

Example output

{
  "inputMint": "So11111111111111111111111111111111111111112",
  "outputMint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "inAmount": "1000000000",
  "outAmount": "93708783",
  "minOutAmount": "93240240",
  "slippageBps": 50,
  "priceImpactPct": 0,
  "swapUsdValue": 93.7,
  "swapMode": "ExactIn",
  "hops": 2,
  "route": [
    {
      "label": "BisonFi",
      "percent": 100,
      "inputMint": "So11111111111111111111111111111111111111112",
      "outputMint": "Es9v...",
      "inAmount": "1000000000",
      "outAmount": "93720054"
    },
    {
      "label": "SolFi V2",
      "percent": 100,
      "inputMint": "Es9v...",
      "outputMint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "inAmount": "93720054",
      "outAmount": "93708783"
    }
  ],
  "contextSlot": 440919041,
  "source": "jupiter",
  "fetchedAt": "2026-08-22T12:00:00.000Z"
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/sol-swap-quote \
  -H "Content-Type: application/json" \
  -d '{"inputMint":"So11111111111111111111111111111111111111112","outputMint":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","amount":"1000000000","slippageBps":50}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/sol-swap-quote", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "inputMint": "So11111111111111111111111111111111111111112",
    "outputMint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000000000",
    "slippageBps": 50
  }),
});

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