Indices

Index-style indicative levels surfaced through /indices. Use the REST reference for the full endpoint list and the exact response schema.

Indices coverage is provided as an indicative, derived market view. All routes require an API key. Individual fields may be optional depending on market conditions; see each route for response details.

Authx-api-key headerBase path/indicesWebSocketindices.quotes · indices.trades

Indices are provided as index-style reference levels for analytics, display, and operational tooling. Endpoint shapes follow the same conventions as other asset classes.

Overview

Use /indices to discover symbols and request quotes, snapshots, and historical aggregates. Coverage can vary by symbol and account permissions.

Endpoints

Index REST routes live under /indices. Use the canonical REST reference for the full endpoint list, parameters, and examples.

Indices REST reference

Symbol list, quotes, last trade, snapshots, previous daily bar, and aggregate range endpoints.

Open REST reference →

Combined Indices & ETFs marketing overview (legacy URL path):

Indices & ETFs data asset overview →

WebSocket Streaming

Stream live quotes and trades for this asset class over the public WebSocket.

wss://stream.tickerlayer.com/?apiKey=<YOUR_API_KEY>

Available channels

Quotesindices.quotesTradesindices.trades

Subscribe example

After the connection is ready, send a JSON text frame:

{
  "action": "subscribe",
  "channels": [
    "indices.quotes",
    "indices.trades"
  ],
  "symbols": [
    "US500",
    "DE40"
  ]
}

Example message

{
  "type": "quote",
  "channel": "indices.quotes",
  "asset": "indices",
  "symbol": "US500",
  "bid": 4788.12,
  "ask": 4788.12,
  "bid_size": 62,
  "ask_size": 58,
  "ts": 1743512400000,
  "timestamp": 1743512400000
}

General WebSocket documentation

For authentication, subscribe/unsubscribe lifecycle, errors, limits, and heartbeats, see the WebSocket overview and Subscriptions.