Priority Fees Stream

Stream Trading API priority fee estimates over WebSocket

GET /priority-fees/stream

Streams priority fee estimate updates over a WebSocket connection

cURL

curl --request GET \
  --url https://quote-api.dflow.net/priority-fees/stream \
  --header 'x-api-key: <api-key>'

Use this stream to receive real-time priority fee estimate updates.

No subscribe message is required. Connect to the endpoint and start reading messages.

Connection

See the Websockets Overview for endpoint details.

Message Format

Each message is a JSON object with the same shape as GET /priority-fees:

{
  "mediumMicroLamports": 100000,
  "highMicroLamports": 150000,
  "veryHighMicroLamports": 220000
}

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);
};

Related

• Websockets Overview
• GET /priority-fees

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Authorizations

x-api-key · string · header · required

API key for authentication. Contact [e-mail] to obtain an API key.

Response

101

WebSocket upgrade