LetsBonk.fun gRPC Streams

Real-time streaming of LetsBonk.fun DEX trades, orders, and transactions via CoreCast gRPC API.

Repository

Clone and get started:

git clone https://github.com/bitquery/grpc-usecase-examples.git

Introduction

This Node.js client allows you to stream real-time trading data from LetsBonk.fun (Solana's memecoin launchpad built on Raydium LaunchLab) using the CoreCast gRPC API. Monitor token launches, track buying/selling pressure, detect whale activity, and analyze trading patterns in real-time.

Key Features:

🚀 Real-time trade streaming from LetsBonk.fun
🎯 Flexible filtering by tokens, traders, and trade direction
💰 Separate buy and sell trade monitoring
📊 Performance metrics and statistics
🔍 Detailed trade information including accounts and currencies
⚡ High-performance with caching and buffering

Quick Start

# 1. Install dependencies
npm install

# 2. Get your API token
# Visit: https://account.bitquery.io/user/api_v2/access_tokens

# 3. Configure your filters in config.yaml
# Edit the file to set your auth token and desired filters

# 4. Run the client
node index.js

What is LetsBonk.fun?

LetsBonk.fun tokens are created and traded on Raydium LaunchLab (Program: LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj).

Trade Data Structure

When you stream LetsBonk.fun trades, each message contains:

Trade Event Structure

{
  Block: {
    Slot: 370485092  // Solana block slot number
  },
  Transaction: {
    Index: 1,
    Signature: "5277PwHQ4PkKRExT45HV8X8XXDmQjWZzHK8dx5ru1eaA...",
    Status: {
      Success: true,
      ErrorMessage: null
    }
  },
  Trade: {
    InstructionIndex: 2,
    Dex: {
      ProgramAddress: "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj",
      ProtocolName: "raydium_launchpad",
      ProtocolFamily: "raydium"
    },
    Market: {
      MarketAddress: "YcQB1hGSR9hNbJ52zrCJyMvbRViQKiaLfenrgZR9BXY",
      BaseCurrency: {
        Symbol: "BONKTOKEN",
        Name: "Bonk Token",
        MintAddress: "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk",
        Decimals: 6
      },
      QuoteCurrency: {
        Symbol: "SOL",
        MintAddress: "So11111111111111111111111111111111111111112",
        Decimals: 9
      }
    },
    Buy: {
      Amount: 100000000,
      Currency: {
        Symbol: "BONKTOKEN",
        MintAddress: "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk",
        Decimals: 6
      },
      Account: {
        Address: "8HqR8D9gHtN1eMJyaX7BN5PmzF5z9KgQzY4nXvFfRD8m",
        IsSigner: true,
        IsWritable: true
      }
    },
    Sell: {
      Amount: 500000000,
      Currency: {
        Symbol: "SOL",
        MintAddress: "So11111111111111111111111111111111111111112",
        Decimals: 9
      },
      Account: {
        Address: "8HqR8D9gHtN1eMJyaX7BN5PmzF5z9KgQzY4nXvFfRD8m",
        IsSigner: true,
        IsWritable: true
      }
    },
    Fee: 0,
    Royalty: 0
  }
}

Key Fields

Field	Description
`Trade.Buy.Amount`	Amount of token being bought
`Trade.Sell.Amount`	Amount of token being sold
`Trade.Buy.Currency.MintAddress`	Token mint address
`Trade.Buy.Account.Address`	Buyer's wallet address
`Trade.Dex.ProgramAddress`	Raydium LaunchLab program address
`Trade.Market.MarketAddress`	Market/pool address for the token
`Block.Slot`	Solana block slot for timing

Configuration Options

Edit config.yaml to configure your stream:

trade_filter: "alltrades" # or "buys" or "sells"

Value	Description
`alltrades`	Show all trades (both buys and sells)
`buys`	Show only trades where the token is being bought
`sells`	Show only trades where the token is being sold

Available Filters

Filter	Description	Example
`programs`	Filter by DEX program address	`LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj`
`tokens`	Filter by token mint address(es)	Your token mint address
`traders`	Filter by wallet address(es)	Specific trader wallets

Filter Examples

1. Monitor ALL trades for a specific token on LetsBonk.fun

Track all trading activity (both buys and sells) for a specific token.

trade_filter: "alltrades"
filters:
  programs:
    - "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj"
  tokens:
    - "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk"

Use Case: General market monitoring, volume analysis

2. Monitor only BUYS for a specific token on LetsBonk.fun

Track buying pressure - see when traders are accumulating the token.

trade_filter: "buys"
filters:
  programs:
    - "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj"
  tokens:
    - "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk"

Use Case: Track accumulation patterns, detect buying momentum

3. Monitor only SELLS for a specific token on LetsBonk.fun

Track selling pressure - detect when traders are dumping the token.

trade_filter: "sells"
filters:
  programs:
    - "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj"
  tokens:
    - "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk"

Use Case: Detect sell pressure, identify dumps, risk monitoring

4. Monitor multiple tokens on LetsBonk.fun

Track trading activity across multiple tokens simultaneously.

trade_filter: "alltrades"
filters:
  programs:
    - "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj"
  tokens:
    - "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk"
    - "4FBx5RBfEuuhkT5RB7kJ46WC6cL9J4SJNXyKeoDAbonk"

Use Case: Portfolio tracking, multi-token analysis

5. Monitor buying activity for a specific trader

Track when a specific wallet buys a specific token.

trade_filter: "buys"
filters:
  programs:
    - "LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj"
  tokens:
    - "CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk"
  traders:
    - "YourWalletAddressHere"

Use Case: Copy-trading specific whales, alpha signal detection

Output Example

When a trade matches your filters, you'll see:

================================================================================
🟢 BUY Trade
================================================================================
Block Slot: 370485092
Timestamp: 2025-10-01T13:11:32.922Z
Instruction Index: 2

📍 DEX Info:
  Program: LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj
  Protocol: raydium_launchpad (raydium)

🏪 Market Info:
  Address: YcQB1hGSR9hNbJ52zrCJyMvbRViQKiaLfenrgZR9BXY
  Base Currency: BONKTOKEN
  Quote Currency: SOL

💰 Buy Side:
  Amount: 100000000
  Currency: BONKTOKEN (Bonk Token)
  Mint: CHNxstQ6zsj9b7QMmCKbnJkhyKwoTL19bPe6VYoebonk
  Decimals: 6
  Account: 8HqR8D9gHtN1eMJyaX7BN5PmzF5z9KgQzY4nXvFfRD8m
  Is Signer: true
  Is Writable: true

💸 Sell Side:
  Amount: 500000000
  Currency: SOL (Wrapped SOL)
  Mint: So11111111111111111111111111111111111111112
  Decimals: 9
  Account: 8HqR8D9gHtN1eMJyaX7BN5PmzF5z9KgQzY4nXvFfRD8m
  Is Signer: true
  Is Writable: true

💵 Fee: 0
👑 Royalty: 0
================================================================================

Repository​

Introduction​

Quick Start​

What is LetsBonk.fun?​

Trade Data Structure​

Trade Event Structure​

Key Fields​

Configuration Options​

Trade Filter Options​

Available Filters​

Filter Examples​

1. Monitor ALL trades for a specific token on LetsBonk.fun​

2. Monitor only BUYS for a specific token on LetsBonk.fun​

3. Monitor only SELLS for a specific token on LetsBonk.fun​

4. Monitor multiple tokens on LetsBonk.fun​

5. Monitor buying activity for a specific trader​

Output Example​