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Kalshi Markets

by Kalshi markets list in Markets & finance

x402 APIPassing, checked 7 min ago

List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at the best yes bid and ask (yesBidSize/yesAskSize). Covers US-regulated markets and Kalshi-only categories (weather, economic data).

POST https://agent402.tools/api/kalshi-markets

Last 30 days

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Uptime
100%
Response time
183 ms typical, 183 ms slowest 5%
Last check
7 min ago
Next check
in 25 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/kalshi-markets" \
  -H "content-type: application/json" \
  -d '{"limit":5,"status":"open"}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fkalshi-markets
const res = await pay("https://agent402.tools/api/kalshi-markets", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"limit":5,"status":"open"}),
});
console.log(await res.json());

Example input

{
  "limit": 5,
  "status": "open"
}

Example output

{
  "count": 1,
  "cursor": "next-page-token",
  "markets": [
    {
      "closeTime": "2026-11-03T23:59:00Z",
      "eventTicker": "PRES-24",
      "lastPrice": 0.46,
      "noAsk": 0.55,
      "noBid": 0.53,
      "openInterest": 5678,
      "openTime": "2026-01-01T00:00:00Z",
      "status": "open",
      "subtitle": "2026 US Presidential election",
      "ticker": "PRES-24-DEM",
      "title": "Will the Democratic nominee win?",
      "venue": "kalshi",
      "venueUrl": "https://kalshi.com/markets/pres-24-dem",
      "volume": 12345,
      "yesAsk": 0.47,
      "yesAskSize": 323.1,
      "yesBid": 0.45,
      "yesBidSize": 471.53
    }
  ],
  "source": "kalshi"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
7 min agoPassed402192 ms$0.002
5 h agoPassed402183 ms$0.002