Indexer & API

The indexer is an off-chain service that indexes on-chain events and serves real-time orderbook data. It is non-authoritative — all data can be independently verified from the chain.

What It Indexes

Event	Data Extracted
OrderPlaced	Order details, tick, side, amount
OrderResting	Order parked outside active tree
OrderCancelled	Order removal
OrderSettled	Per-order fill result, amounts
BatchCleared	Clearing price, volume, fill fractions
GtcAutoCancelled	GTC order auto-cancelled on market close
MarketCreated	Market parameters, expiry
MarketResolved	Outcome, settlement price

REST API

The canonical versioned API surface lives under /v1/.

Public OpenAPI Spec

The generated OpenAPI spec is published at:

• https://app.strike.pm/api-docs/

Use this as the source of truth for routes, params, enums, and response schemas.

Key Endpoints

GET /v1/markets                    — List all markets (filterable by status)
GET /v1/markets/:id                — Market details
GET /v1/markets/:id/orderbook      — Current orderbook (bids + asks by tick)
GET /v1/markets/:id/trades         — Trade history
GET /v1/markets/:id/ohlcv          — Candlestick data (from clearing prices)
GET /v1/positions/:address         — Open orders + filled positions for a wallet
GET /v1/stats                      — Aggregate protocol stats
GET /v1/markets/:id/ai-resolution  — AI market resolution details

Market Status Values

The current market status enum exposed by the indexer is:

• active

• closed

• resolving

• resolved

• cancelled

WebSocket

Connect to receive real-time updates:

ws://indexer:3002/ws

Message Format

All messages use the format { type, event, data: {...} }. Always access fields via msg.data.field.

{"type": "orderbook", "event": "update", "data": {"marketId": "...", "bids": [...], "asks": [...]}}
{"type": "trade", "event": "fill", "data": {"marketId": "...", "price": 65, "volume": "..."}}
{"type": "market_status", "event": "change", "data": {"marketId": "...", "status": "resolved"}}
{"type": "batch_cleared", "event": "cleared", "data": {"marketId": "...", "clearingTick": 65, "volume": "..."}}

On BatchCleared, the WebSocket broadcasts a full orderbook snapshot so clients can reconcile state.

Subscribe to specific markets:

{"action": "subscribe", "markets": ["0x..."]}

Infrastructure

• RPC: uses a dedicated RPC provider (public BSC endpoints may disable eth_getLogs)

• Database: PostgreSQL

• Deployment: systemd service, configurable via .env