Air Search

{
  "search": {
    "offers": [
      {
        "arriving_at": "2026-08-02T21:10:00",
        "base_amount_decimal": "65.00",
        "cabin_class": "economy",
        "cabin_class_marketing_name": "ECONOMY",
        "carry_on_bags_included": 1,
        "checked_bags_included": 1,
        "comparison_key": "cmp_abc123",
        "conditions": {
          "change_allowed": true,
          "change_penalty_amount": "0",
          "change_penalty_currency": "USD",
          "refund_allowed": false
        },
        "departing_at": "2026-08-02T14:42:00",
        "destination_iata": "LIS",
        "destination_time_zone": "Europe/Lisbon",
        "duration": "PT1H15M",
        "fare_brand_name": "Flexible Balearic",
        "id": "off_0000000000000000000000",
        "identity_documents_required": false,
        "origin_iata": "MAD",
        "origin_time_zone": "Europe/Madrid",
        "owner_name": "Iberia",
        "segments": [
          {
            "arriving_at": "2026-08-02T17:44:00",
            "carrier_name": "Iberia",
            "departing_at": "2026-08-02T14:42:00",
            "destination_iata": "MXP",
            "flight_number": "1953",
            "origin_iata": "MAD"
          },
          {
            "arriving_at": "2026-08-02T21:10:00",
            "carrier_name": "Iberia",
            "departing_at": "2026-08-02T19:28:00",
            "destination_iata": "LIS",
            "flight_number": "1430",
            "origin_iata": "MXP"
          }
        ],
        "stops": 1,
        "tax_amount_decimal": "24.50",
        "technical_stops": 0,
        "total_amount": 216950000,
        "total_amount_decimal": "216.95",
        "total_currency": "USD",
        "total_emissions_kg": "21"
      }
    ],
    "request_id": "orq_0000000000000000000000"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://travel.brij.fi/air/search' \
  -H 'content-type: application/json' \
  --data-raw '{"adults":1,"cabin_class":"economy","depart_date":"2026-06-10","destination_iata":"LIS","origin_iata":"MAD"}'

# 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://travel.brij.fi/air/search' \
  -H 'content-type: application/json' \
  --data-raw '{"adults":1,"cabin_class":"economy","depart_date":"2026-06-10","destination_iata":"LIS","origin_iata":"MAD"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/svm @solana/kit @scure/base
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactSvmScheme } from "@x402/svm/exact/client";
import { createKeyPairSignerFromBytes } from "@solana/kit";
import { base58 } from "@scure/base";

// Pays at most $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
registerExactSvmScheme(client, { signer: await createKeyPairSignerFromBytes(base58.decode(process.env.SVM_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 $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftravel.brij.fi%2Fair%2Fsearch&method=POST
const res = await pay("https://travel.brij.fi/air/search", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "adults": 1,
    "cabin_class": "economy",
    "depart_date": "2026-06-10",
    "destination_iata": "LIS",
    "origin_iata": "MAD"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,svm]"
import os
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.svm import KeypairSigner
from x402.mechanisms.svm.exact.register import register_exact_svm_client

# Pays at most $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_svm_client(client, KeypairSigner.from_base58(os.environ["SVM_PRIVATE_KEY"]))

with x402_requests(client) as session:
    res = session.post(
        "https://travel.brij.fi/air/search",
        json={
            "adults": 1,
            "cabin_class": "economy",
            "depart_date": "2026-06-10",
            "destination_iata": "LIS",
            "origin_iata": "MAD",
        },
    )
    print(res.status_code, res.text)