Clobber is a hosted central limit order book. Create markets with a POST, accept orders in microseconds, stream fills over WebSocket. No exchange team required.
Everything a venue needs: markets, accounts, orders, settlement. Deterministic matching, price-time priority, an internal ledger that always balances.
Binary outcomes, currency pairs, or anything with a price. Tick size, fees and limits are yours to set.
Limit, market, IOC, FOK. Idempotency keys built in, acks in under a millisecond.
Book deltas, trades and fills per account, sequenced so you never miss an event.
Declare the result and every position settles atomically against the internal ledger.
# 1. a market for anything POST /v1/markets { "symbol": "WILL-IT-RAIN-BA", "kind": "binary", "tick_size": "0.01" } # 2. a limit order POST /v1/orders { "market": "WILL-IT-RAIN-BA", "side": "buy", "type": "limit", "price": "0.61", "qty": "250" } # 3. fills, as they happen WS wss://feed.clobber.dev ← { "event": "fill", "px": "0.61", "qty": "250", "seq": 48210 }
Anywhere users should trade against each other instead of against a house price.
Launch a CLOB-based prediction market in days. Binary contracts, probability pricing, atomic settlement on resolution.
Let your audience predict with points or credits. Price discovery is the engagement loop; no real money, no licensing.
Game items, GPU hours, tickets, carbon credits. Replace fixed prices with a continuous double auction.
Self-serve with a card. No sales calls unless you want one.
A deterministic engine, every command journaled, replicas replaying the same log. Failover is a replay, not a fire drill. A public status page is on the way.
Tell us what you're building and we'll get back to you. Sandbox keys usually ship the same day; dedicated engines within a week.
First market live in an afternoon. Bring your own product; we'll match the orders.
Start in the sandbox