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BTC $71,250.40 +2.14% ETH $3,842.18 +1.32% BNB $612.30 -0.88% SOL $178.55 +5.67% XRP $0.6242 +3.41% ADA $0.4671 +1.12% AVAX $38.92 +4.23% DOT $7.06 -0.52% TRX $0.1182 +0.62% ATOM $8.21 +2.05% NEAR $6.04 +3.66% APT $8.95 +1.42% BTC $71,250.40 +2.14% ETH $3,842.18 +1.32% BNB $612.30 -0.88% SOL $178.55 +5.67% XRP $0.6242 +3.41% ADA $0.4671 +1.12% AVAX $38.92 +4.23% DOT $7.06 -0.52% TRX $0.1182 +0.62% ATOM $8.21 +2.05% NEAR $6.04 +3.66% APT $8.95 +1.42%
6월 7, 2026

API Documentation

API Overview

Meridian US provides REST and WebSocket APIs for programmatic access to market data, order management, and account operations. All endpoints require authentication via API key + HMAC signature.

Authentication

  1. Generate an API key pair from Account → Settings → API Keys
  2. Sign every request with HMAC-SHA256 using your secret key
  3. Include the signature in the X-MER-SIGNATURE header

REST Endpoints

Method Endpoint Description
GET /v1/markets Live ticker for all pairs
GET /v1/orderbook/:pair Depth snapshot (bids/asks)
GET /v1/trades/:pair Recent trades
GET /v1/klines/:pair Candlestick data
POST /v1/orders Place order
DELETE /v1/orders/:id Cancel order
GET /v1/account/balances Wallet balances

WebSocket

Connect to wss://ws.meridian.us/v1/stream and subscribe to channels:

  • ticker@BTCUSDT — real-time price updates
  • depth@BTCUSDT — order-book diff stream
  • trades@BTCUSDT — live trade stream
  • account — balance and order updates (authenticated)

FIX 4.4

Available for institutional clients on dedicated throughput tiers. Contact your account manager for session credentials and the FIX specification document.

Rate Limits

  • Public endpoints: 1,200 requests/minute
  • Authenticated endpoints: 600 requests/minute
  • Order placement: 100 requests/second
  • VIP tiers: custom limits available