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This page outlines how to use the gRPC endpoint for asset price streaming. Streaming is the real-time alternative to repeatedly polling the REST price endpoints. For a single price poll, use Get Current Prices for All Supported Assets or Get Current Price for an Asset.

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Authentication

All requests must include your API key in the x-api-key metadata header.

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Request

RPC: ondo.gm.backend.v1.BackendService/StreamPriceUpdates
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symbols
string[]
Asset symbols to subscribe to. If empty, you will receive updates for all assets.

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Response

A server stream of messages. Each message batches one or more price updates into a single updates array.
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updates
PriceUpdate[]
Array of price updates.
grpcurl \
  -H "x-api-key: <YOUR_API_KEY>" \
  -d '{"symbols": ["AAPLon", "GOOGLon"]}' \
  grpc.gm.ondo.finance:443 \
  ondo.gm.backend.v1.BackendService/StreamPriceUpdates

{
  "updates": [
    {
      "ticker": "GOOGL",
      "symbol": "GOOGLon",
      "stock_price": "304.915",
      "token_price": "305.39957516982939159",
      "timestamp": "1773350214478735649"
    },
    {
      "ticker": "AAPL",
      "symbol": "AAPLon",
      "stock_price": "256.2475",
      "token_price": "256.791808070580506978",
      "timestamp": "1773350214476688119"
    }
  ]
}