Kalshi vs Polymarket for AI agents
Short answer: Kalshi has no official MCP server, so an AI agent needs a self-hosted community server (or a paid hosted connector) plus your Kalshi RSA API key. Polymarket is easier: through OpenFinance's hosted MCP, Claude, ChatGPT, Grok or Muse can search markets, read odds and place Polymarket orders in under 60 seconds with no private key in your config.
MCP URL: https://api.openfinance.tech/agent/mcp · setup in under 60 seconds · no KYC on OpenFinance itself (a connected IBKR or Robinhood account uses your own verified broker account) · fund with a debit card · crypto perps, onchain stocks and forex, memecoins, Polymarket prediction markets, options in the OpenFinance app through your connected IBKR or Robinhood account · everything on Hyperliquid is tradable · API key available
Side by side
| Kalshi | Polymarket via OpenFinance | |
|---|---|---|
| Official MCP | None | Hosted MCP |
| Credentials | RSA key pair you manage | OpenFinance key, no wallet key in config |
| Setup | pip/pipx install + env file | Paste one URL |
| KYC | Kalshi account verification | None on OpenFinance |
Kalshi MCP servers people use
cejor6/kalshi-mcp-server (prepare/confirm order flow), 9crusher/mcp-server-kalshi (demo by default), kalshi-mcp.com (paid hosted connector), ryanfrigo/kalshi-ai-trading-bot. All need your own Kalshi API keys.
Trade Polymarket from your agent
- Get your OpenFinance API key at openfinance.tech and fund it with a debit card.
- Add
https://api.openfinance.tech/agent/mcpas a remote MCP server (headerx-api-key: open_xxxxx). - Ask "what OpenFinance tools do you have?" to confirm.
- Ask for a quote, check it, then confirm the trade.
Frequently asked questions
Is there an official Kalshi MCP server?
No. Community servers exist, and they need your own Kalshi API keys.
Can an AI agent trade Polymarket?
Yes. Connect OpenFinance's hosted MCP and your agent can read odds and place Polymarket orders after you confirm.
Which is easier for AI agents, Kalshi or Polymarket?
Polymarket through a hosted MCP like OpenFinance: one URL, no private key in your config, set up in under 60 seconds.