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Use this stream to receive real-time priority fee estimate updates.
No subscribe message is required. Connect to the endpoint and start reading messages.

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Connection

See the Websockets Overview for endpoint details.

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Message Format

Each message is a JSON object with the same shape as GET /priority-fees: 
{
  "mediumMicroLamports": 100000,
  "highMicroLamports": 150000,
  "veryHighMicroLamports": 220000
}

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Example (TypeScript)

import WebSocket from "ws";

const WS_URL = "wss://dev-quote-api.dflow.net/priority-fees/stream";
const ws = new WebSocket(WS_URL);

ws.onopen = () => {
  console.log("Connected — waiting for priority fee updates");
};

ws.onmessage = (event) => {
  const fees = JSON.parse(event.data.toString());
  console.log("Priority fees (micro-lamports/CU):", fees);
};