Find Pump.fun First Buyers Before You Trade

First buyers define the early market

The first wallets into a Pump.fun launch often define whether you're early or exit liquidity, call GET /first-buyers/{mint} to list the earliest buyers with PnL, or subscribe to snipers on the Datastream for live sniper-percentage updates.

What you need

• A Solana Tracker API key (free) and Datastream key (Premium+, same dashboard)
• Node.js 18+
• Optional: Pump.fun mint (TOKEN_MINT); the example auto-picks a high-volume Pump token if unset
• Optional: Datastream key + STREAM_SNIPERS=1 for live sniper-% updates (Premium+)

Step 1: First buyers (REST)

import { Client } from '@solana-tracker/data-api';

const client = new Client({ apiKey: process.env.ST_API_KEY, baseUrl: 'https://data.solanatracker.io' });
const buyers = await client.getFirstBuyers(MINT);

for (const row of buyers.slice(0, 20)) {
  console.log(row.wallet, row.total, row.first_buy_time);
}

Each row includes wallet, buy timing, and PnL where indexed.

Step 2: PnL v2 first buyers (richer analytics)

For identity tags and nested wallet PnL:

const enriched = await client.getPnlV2TokenFirstBuyers(MINT, {
  sort: 'first_trade',
  direction: 'asc',
  limit: 50,
});

Step 3: Live sniper percentage (WebSocket)

import WebSocket from 'ws';
(globalThis as any).WebSocket = WebSocket;
const { Datastream } = await import('@solana-tracker/data-api');

const ds = new Datastream({ wsUrl: `wss://datastream.solanatracker.io/${process.env.ST_DATASTREAM_KEY}` });
await ds.connect();

// Set STREAM_SNIPERS=1 in .env when running the GitHub example

ds.subscribe.snipers(MINT).on((update) => {
  console.log('Sniper %:', update.totalPercentage);
});

Pair this with the launch stream, detect the mint, then immediately inspect first buyers.

FAQ

How many first buyers do I get?

Up to 100 via getFirstBuyers(); use PnL v2 endpoints for pagination and sorting.

What's a "sniper" here?

Wallets that bought within the first few blocks of launch, high sniper % often means heavy bot competition.

Do I need gRPC for this?

No. REST + Datastream covers analytics for most dashboards. gRPC is for raw program-level detection (Pump.fun gRPC guide).

Related: Stream Pump.fun launches -> · Pump.fun API

Download the example

Clone the full runnable project on GitHub, npm install && npm start with your keys in .env. Or open it in StackBlitz to run in your browser (free). See the tutorial for step-by-step context.