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. Matching in microseconds, measured on the engine core; durable acks in single-digit milliseconds at p99 is what the journal is built for.
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.clobberhq.com ← { "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.
Prices for when it ships. Every tier goes through the same form for now.
Dedicated annual plans: 12 months upfront at a discount, with a data export guarantee written into the contract. Ask us.
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.
We are picking design partners before general availability. If you are running a matching engine today, or about to start writing one, you will hear back within a day.
Bring your own product; we'll match the orders. Design partners shape what ships first.
Request early access