preflight_trade
Preflight a Polymarket order
Pre-flight verdict (OK / CAUTION / VETO) for a Polymarket order before you send it: expected VWAP slippage, visible depth, 2026 taker-fee drag, safe size and book staleness, computed deterministically from the live CLOB book. Identify the market by token_id, or by slug + outcome. Price: $0.02 per call via x402 or 1 credit with a bearer token; sandbox: true is free.
usdsideslugoutcomesandboxtoken_idmax_book_age_smax_slippage_cveto_slippage_c