The international, crypto-based Polymarket exchange on Polygon, with Gamma, CLOB and Data APIs. Public reads need no key; trading uses L1/L2 auth from a wallet, so these recipes start with paper mode and a dedicated hot wallet. Official Polymarket International docs.
A tested AI prompt that builds a Python starter for the international Polymarket CLOB API: Gamma market data, correct order books, per-market fees, L1/L2 auth explained, and a paper broker. No orders, no keys.
A tested AI prompt that builds four small wallet-safety tools for crypto and prediction-market bots: a secret scanner pre-commit hook, an env-file guard, a kill switch and a read-only wallet audit that flags balances and unlimited approvals.
Tools: Kalshi vs Polymarket API comparison · Kalshi & Polymarket fee calculator · AI model test results · Safety Pack
One new build recipe, one safety tip, and API changes worth knowing about. Free. No picks, ever.