subscribe_ohlcv - live candles

Live 1-second OHLCV candles for a pool. The server emits ohlcv every time the current bucket changes (≤1 update/sec). Pass one of mint or pool.

Channel	Socket.IO event
Auth	auth.api_key in the handshake
Emits	ohlcv

Example

JavaScript

import { io } from "socket.io-client";

const socket = io("https://api.pumpdata.fun", {
  auth: { api_key: "pd_xxxxxxxx…" },
});

socket.on("ohlcv", (rows) => {
  for (const [t, o, h, l, c, v] of rows) {
    console.log(new Date(t), `o=${o} h=${h} l=${l} c=${c} v=${v}`);
  }
});

socket.emit("subscribe_ohlcv", { pool: "4mBL…" });

// later, to stop (free): socket.emit("unsubscribe_ohlcv", { pool: "4mBL…" });

Python

import socketio
from datetime import datetime

sio = socketio.Client()

@sio.on("ohlcv")
def on_ohlcv(rows):
    for t, o, h, l, c, v in rows:
        print(datetime.fromtimestamp(t / 1000), f"o={o} h={h} l={l} c={c} v={v}")

sio.connect("https://api.pumpdata.fun", auth={"api_key": "pd_xxxxxxxx…"})
sio.emit("subscribe_ohlcv", {"pool": "4mBL…"})
sio.wait()

# later, to stop (free): sio.emit("unsubscribe_ohlcv", {"pool": "4mBL…"})

Response - ohlcv

An array of candle tuples (usually one per emission). Each tuple is [ timestamp_ms, open, high, low, close, volume ]:

[[1779812627000, 0.000000033, 0.000000034, 0.000000033, 0.000000034, 5.12]]

The tuple format matches what lightweight-charts, TradingView, Chart.js financial, etc. expect - so it drops straight into a chart.

Errors

If the subscription cannot be created, the ack callback receives an error object instead of { ok: true }:

{ "error": "not_found", "message": "pool not found" }

error	When
invalid_request	Neither mint nor pool was provided.
not_found	The mint has no active pool, or the given pool has neither live data nor candle history.
unavailable	A transient backend error (the server already retried). Safe to retry - it is not a definitive "not found".
limit_exceeded	This connection already has the maximum number of subscriptions.

If you do not pass an ack callback, the same payload is emitted as a subscription_error event instead.

Try it

Notes

• Granularity is 1s; aggregate client-side if you want 1m/5m/1h.
• Seed the initial window with ohlcv_history, then keep it live here.
• For per-trade detail use subscribe_trades.