A live FIX counterparty, free, in one click.

Create a sandbox session, point your FIX engine at it, and watch your logons, orders, and fills parse into readable FIX — right here on this page. No account. No install. No counterparty paperwork.

FIX version

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Host
Port
SenderCompID (49)
TargetCompID (56)
BeginString (8)
ApplVerID (1137)
Expires

Any FIX engine works. Heartbeats are free; orders get canned acks and fills.

Working Orders

Auto-fill incoming orders

No working orders — send a NewOrderSingle from your engine and it lands here for you to act on.

FIX Messages Live Feed

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Sandbox sessions expire, CompIDs are assigned, nothing persists. Need persistent sessions, your own CompIDs, custom fills and scenarios, TLS? Start a free 7-day trial of FIXSIM — full product, no credit card.