Flights Search

{
  "meta": {
    "resultCount": 1,
    "searchedAt": "2026-05-19T00:00:00.000Z"
  },
  "results": [
    {
      "airlineCodes": [
        "BA"
      ],
      "currency": "USD",
      "id": "off_example",
      "itineraries": [
        {
          "duration": "PT10H15M",
          "numberOfStops": 0,
          "segments": [
            {
              "arrival": {
                "airportCode": "NRT",
                "at": "2026-08-11T15:00:00"
              },
              "carrierCode": "BA",
              "departure": {
                "airportCode": "SFO",
                "at": "2026-08-10T12:00:00"
              },
              "flightNumber": "284"
            }
          ]
        }
      ],
      "source": "flight_search",
      "totalPrice": "418.90"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.munition.io/v1/flights/search' \
  -H 'content-type: application/json' \
  --data-raw '{"adults":1,"children":0,"departureDate":"2026-08-10","destination":"NRT","infants":0,"maxResults":10,"origin":"SFO","returnDate":"2026-08-21","travelClass":"ECONOMY"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.munition.io/v1/flights/search' \
  -H 'content-type: application/json' \
  --data-raw '{"adults":1,"children":0,"departureDate":"2026-08-10","destination":"NRT","infants":0,"maxResults":10,"origin":"SFO","returnDate":"2026-08-21","travelClass":"ECONOMY"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.munition.io%2Fv1%2Fflights%2Fsearch&method=POST
const res = await pay("https://api.munition.io/v1/flights/search", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "adults": 1,
    "children": 0,
    "departureDate": "2026-08-10",
    "destination": "NRT",
    "infants": 0,
    "maxResults": 10,
    "origin": "SFO",
    "returnDate": "2026-08-21",
    "travelClass": "ECONOMY"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.munition.io/v1/flights/search",
        json={
            "adults": 1,
            "children": 0,
            "departureDate": "2026-08-10",
            "destination": "NRT",
            "infants": 0,
            "maxResults": 10,
            "origin": "SFO",
            "returnDate": "2026-08-21",
            "travelClass": "ECONOMY",
        },
    )
    print(res.status_code, res.text)