Butterfly Delta Exact-Order Preflight
Signed exact-order depth, spread, slippage, freshness, and venue-state preflight for Coinbase and Gemini crypto trading agents. Returns PASS/BLOCK/UNKNOWN before order placement.
x402 verified · $0.01 USDC/request · 1 endpoints / 1 tools · Finance · base network · x402 protocol
How to call this API
Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.