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Butterfly Delta Exact-Order Preflight

https://butterflydelta.com/api/agent/order-preflight
● healthy trading-data

A trading agent sends one exact Coinbase or Gemini USD spot order immediately before submission. Butterfly Delta checks live venue availability, spread, quote freshness, visible depth, estimated slippage, and cross-venue divergence, then returns a signed, expiring PASS, BLOCK, or UNKNOWN gate. Re-run before every successive order.

Category
trading-data
Chains
base
Price
$0.0100 USDC / call

Quality grade

How grading works
B 66.6 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 402)
Payability 20.0 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 6.6 / 40
2 distinct payers, 4 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 9 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X POST https://butterflydelta.com/api/agent/order-preflight  # expect HTTP 402 Payment Required (about 0.01 USDC/call)
/.well-known/x402.json
https://butterflydelta.com/.well-known/x402

Listed in

Directories this entry was found in.

submission a2a x402