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PaySponge Kalshi Markets Checkout
x402
PaySponge Kalshi Markets Checkout is a paid API for AI agents from api.paysponge.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Creates a paid crypto checkout session for accessing Kalshi prediction market listings, supporting EVM and Solana multi-chain payments with exact-amount and timeout controls.
Price / call$0.01
Success—
StatusUnknown
How this service works
Creates a paid checkout for Kalshi markets accepting multi-chain crypto payments (EVM & Solana) with exact-amount and timeout controls.
Output
Returns a JSON payload containing Kalshi prediction market listings — including available markets, event contracts, current odds or prices, and associated metadata — delivered after successful crypto payment authorization via the x402 protocol on EVM or Solana chains.
Example use cases
Browsing live prediction market odds
“Show me what prediction markets are currently live on Kalshi — I want to pay with USDC on Ethereum and see what events are tradeable right now.”
Crypto-native trading research
“I'm building a trading bot and need to fetch Kalshi market data using a USDC crypto payment on Solana. Can you pull the current market listings for me?”
Comparing event contract prices
“Can you fetch the current Kalshi markets so I can compare the odds on upcoming political and economic events? I'll pay with USDC over EVM.”
Technical details
Endpoint
GEThttps://api.paysponge.com/x402/purchase/svc_d5y7k40sm2ntn45xr/kalshi/marketsWhen to prefer
Choose this endpoint when you need programmatic access to Kalshi prediction market listings and want to pay per-call using on-chain crypto (USDC on EVM or Solana) rather than maintaining a traditional API subscription. It is especially suited for agents and bots that already operate in a crypto-native environment and need pay-as-you-go access to event market data without managing API keys.
Side effects
- Insufficient USDC balance to cover the $0.01 per-call fee results in payment rejection
- Payment timeout exceeded causes checkout session to expire before data is returned
- Unsupported chain or wallet type results in payment failure
- Kalshi market data unavailable or API downstream error returns empty or error JSON
- Malformed GET request or disallowed HTTP method returns schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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