Kalshi Quote

Get an unsigned Kalshi transaction from DFlow. Step 1 of the quote → sign → submit BYOW flow.

POST /kalshi/agent/quote

Kalshi Quote

cURL

curl --request POST \
  --url https://www.aionmarket.com/bvapi/kalshi/agent/quote \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "marketTicker": "KXHIGHNY-26FEB19-T70",
  "amount": 10,
  "shares": 5,
  "userPublicKey": "8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1",
  "destinationWallet": "<string>"
}
'

import requests

url = "https://www.aionmarket.com/bvapi/kalshi/agent/quote"

payload = {
    "marketTicker": "KXHIGHNY-26FEB19-T70",
    "amount": 10,
    "shares": 5,
    "userPublicKey": "8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1",
    "destinationWallet": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    marketTicker: 'KXHIGHNY-26FEB19-T70',
    amount: 10,
    shares: 5,
    userPublicKey: '8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1',
    destinationWallet: '<string>'
  })
};

fetch('https://www.aionmarket.com/bvapi/kalshi/agent/quote', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://www.aionmarket.com/bvapi/kalshi/agent/quote",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'marketTicker' => 'KXHIGHNY-26FEB19-T70',
    'amount' => 10,
    'shares' => 5,
    'userPublicKey' => '8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1',
    'destinationWallet' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://www.aionmarket.com/bvapi/kalshi/agent/quote"

	payload := strings.NewReader("{\n  \"marketTicker\": \"KXHIGHNY-26FEB19-T70\",\n  \"amount\": 10,\n  \"shares\": 5,\n  \"userPublicKey\": \"8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1\",\n  \"destinationWallet\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://www.aionmarket.com/bvapi/kalshi/agent/quote")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"marketTicker\": \"KXHIGHNY-26FEB19-T70\",\n  \"amount\": 10,\n  \"shares\": 5,\n  \"userPublicKey\": \"8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1\",\n  \"destinationWallet\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.aionmarket.com/bvapi/kalshi/agent/quote")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"marketTicker\": \"KXHIGHNY-26FEB19-T70\",\n  \"amount\": 10,\n  \"shares\": 5,\n  \"userPublicKey\": \"8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1\",\n  \"destinationWallet\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

200

{
  "quoteId": "<string>",
  "expiresAt": "<string>",
  "unsignedTransaction": "<string>",
  "previewOnly": true,
  "kycRequired": true,
  "geoblocked": true,
  "venue": "<string>",
  "marketId": "<string>",
  "side": "<string>",
  "action": "<string>",
  "amount": "<string>",
  "shares": "<string>"
}

Returns an unsigned Solana transaction from DFlow. The agent signs it locally and submits via POST /kalshi/agent/submit. Your private key never leaves your machine.

Notes

• Agent-only endpoint. Requires Bearer API key in Authorization header.
• Supports BUY (amount in USDC) and SELL (shares).
• Server resolves market token mints from DFlow metadata automatically.
• Response is raw JSON (not wrapped by global ApiResponse interceptor).
• If quoteErrorCode is present, the quote is degraded — no unsigned transaction is available.

Request fields

Field	Type	Required	Description
marketTicker	string	Yes	Kalshi market ticker, e.g. KXHIGHNY-26FEB19-T70
side	string	Yes	YES or NO
action	string	Yes	BUY or SELL
amount	number	BUY required	Buy amount in USDC (min 0.000001)
shares	number	SELL required	Sell shares (min 0.000001)
userPublicKey	string	No	Solana wallet address (overrides agent’s sol_address)
destinationWallet	string	No	Destination wallet for received tokens

Example

curl

curl -X POST "https://www.aionmarket.com/bvapi/kalshi/agent/quote" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "marketTicker": "KXHIGHNY-26FEB19-T70",
    "side": "YES",
    "action": "BUY",
    "amount": 10,
    "userPublicKey": "8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1"
  }'

Python SDK

from aion_sdk import AionMarketClient

client = AionMarketClient(
    api_key="YOUR_API_KEY",
    base_url="https://www.aionmarket.com/bvapi",
)

quote = client.kalshi_quote(
    market_ticker="KXHIGHNY-26FEB19-T70",
    side="YES",
    action="BUY",
    amount=10,
    user_public_key="8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1",
)

# Check for quote errors before proceeding
if quote.get("quoteErrorCode"):
    print(f"Quote error: {quote['quoteErrorCode']} - {quote.get('quoteErrorMessage', '')}")
else:
    quote_id = quote["quoteId"]
    unsigned_tx = quote["unsignedTransaction"]

Quotes expire in ~2 minutes. Sign and call POST /kalshi/agent/submit promptly. If the quote expires, request a new one.

Response

{
  "marketTicker": "KXHIGHNY-26FEB19-T70",
  "title": "Will NYC high be above 70F on Feb 19?",
  "status": "active",
  "side": "YES",
  "action": "BUY",
  "yesPrice": "0.6500",
  "noPrice": "0.3500",
  "yesMint": "6JYgs7EJFc5oQZiWAH1mMzEFEfAdCBGnM4y7rD3P6dS4",
  "noMint": "7NykYSMXd3QxjxeRgp3TD1MmwhNwhebZcxes9T2uYLMV",
  "inputMint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "outputMint": "6JYgs7EJFc5oQZiWAH1mMzEFEfAdCBGnM4y7rD3P6dS4",
  "scaledAmount": "10000000",
  "quoteId": "quote_1713604800000_42",
  "unsignedTransaction": "AQAB...",
  "expiresAt": 1713604920000,
  "inAmount": "10000000",
  "outAmount": "15384615",
  "minOutAmount": "14615384"
}

Response field	Type	Description
marketTicker	string	Echoed market ticker
title	string	Market question title
status	string	Market status (e.g. active, settled)
side	string	YES or NO
action	string	BUY or SELL
yesPrice	string	Current YES price
noPrice	string	Current NO price
yesMint	string	YES outcome token mint address
noMint	string	NO outcome token mint address
inputMint	string	Input token mint for this trade (USDC or outcome token)
outputMint	string	Output token mint for this trade (outcome token or USDC)
scaledAmount	string	Trade amount in atomic units (6 decimals)
quoteId	string	Server-generated quote ID — pass to /kalshi/agent/submit
unsignedTransaction	string	Base64-encoded unsigned Solana transaction from DFlow
expiresAt	number	Quote expiry timestamp in milliseconds
inAmount	string	DFlow actual input amount (scaled, 6 decimals). Optional
outAmount	string	DFlow estimated output amount (scaled). Optional
minOutAmount	string	DFlow minimum output with slippage protection. Optional
quoteErrorCode	string	Error code when DFlow cannot build transaction. Optional
quoteErrorMessage	string	Human-readable error message. Optional

Authorizations

Authorization · string · header · default: YOUR_API_KEY · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

marketTicker · string · required

Kalshi market ticker

Maximum string length: 120

Example:

"KXHIGHNY-26FEB19-T70"

side · enum<string> · required

Trade direction

Available options: YES, NO, yes, no

action · enum<string> · required

Order action

Available options: BUY, SELL, buy, sell

amount · number

BUY order amount in USDC (required when action=BUY, min 0.000001)

Example:

10

shares · number

SELL share quantity (required when action=SELL, min 0.000001)

Example:

5

userPublicKey · string

User Solana wallet address

Maximum string length: 128

Example:

"8Yj7Dfp8oS3wkt2uP12xMz9VfF7ZzBv4qfB8Zbe8vXJ1"

destinationWallet · string

Destination wallet for received tokens

Maximum string length: 128

Response

200 - application/json

Unsigned Kalshi quote

quoteId · string

expiresAt · string

unsignedTransaction · string

previewOnly · boolean

kycRequired · boolean

geoblocked · boolean

venue · string

marketId · string

side · string

action · string

amount · string

shares · string