DEV Community

Benjamin-Cup
Benjamin-Cup

Posted on

How to Build a Pons Bundler Bot on Robinhood Chain

#robinhood #bundler #pons #bot

Token launches on Robinhood Chain can become interesting when launch mechanics include a temporary snipe tax.

In this tutorial, I'll show the basic architecture behind a Pons V2 Bundler Bot and how to build a simple one-wallet launchAndBuy implementation.

This is an educational/research project designed to help developers understand how automated on-chain trading systems work.

What We're Building

The basic workflow is:

Pons Factory
     ↓
Check canLaunch()
     ↓
Read launch configuration
     ↓
Read current snipe tax
     ↓
Build launchAndBuy()
     ↓
Simulate transaction
     ↓
Sign & execute
Enter fullscreen mode Exit fullscreen mode

The bot can provide commands such as:

pnpm pons index

pnpm pons can-launch 0xYourWallet

pnpm pons tax \
  --token 0xToken \
  --wallet 0xWallet

pnpm pons preview \
  --config examples/launch.json

pnpm pons launch \
  --config examples/launch.json
Enter fullscreen mode Exit fullscreen mode

Understanding the Snipe Tax

One of the interesting parts of Pons V2 is the temporary launch tax.

The contract exposes:

currentSnipeTaxBps
Enter fullscreen mode Exit fullscreen mode

where the value is represented in basis points.

For example:

100 bps   = 1%
1000 bps  = 10%
9900 bps  = 99%
Enter fullscreen mode Exit fullscreen mode

The tax decreases as the launch progresses.

This means that buying immediately after launch can be very different from buying later.

The interesting part is the relationship between the launch transaction and its recipient.

With launchAndBuy, the launch and initial purchase can happen together, allowing us to study how the launch contract treats the initial recipient compared with another wallet.

For example:

LaunchAndBuy recipient
        ↓
      0 bps

Random wallet
        ↓
   ~9900 bps
Enter fullscreen mode Exit fullscreen mode

The exact behavior should always be verified against the current Pons V2 contracts.

Building the Bot

The project can be organized into a few simple modules:

src/
├── cli.ts
├── launch.ts
└── tax.ts

examples/
└── launch.json
Enter fullscreen mode Exit fullscreen mode

cli.ts

Handles commands such as:

pons index
pons can-launch
pons tax
pons preview
pons launch
Enter fullscreen mode Exit fullscreen mode

launch.ts

Handles:

  • Factory configuration
  • canLaunch
  • launchAndBuy
  • Transaction construction
  • Transaction simulation

tax.ts

Reads:

currentSnipeTaxBps
Enter fullscreen mode Exit fullscreen mode

for a specific token and wallet.

Transaction Safety

One important detail is msg.value.

The launch transaction may require the launch fee plus the initial buy amount:

msg.value =
    launch fee
  + first buy
Enter fullscreen mode Exit fullscreen mode

Before sending the transaction, the bot should:

  1. Validate the configuration.
  2. Check canLaunch.
  3. Calculate the required value.
  4. Simulate the transaction.
  5. Only then sign and broadcast.

I also recommend making execution explicit:

pnpm pons launch --config examples/launch.json
Enter fullscreen mode Exit fullscreen mode

for a dry run, and:

pnpm pons launch \
  --config examples/launch.json \
  --live
Enter fullscreen mode Exit fullscreen mode

when you intentionally want to send the transaction.

Security

Never put private keys directly into source code.

Use a local .env:

PONSBOT_PRIVATE_KEY=0x...
RPC_URL=https://rpc.mainnet.chain.robinhood.com
Enter fullscreen mode Exit fullscreen mode

and add .env to .gitignore.

For testing, use a dedicated wallet with only the funds required for the experiment.

What's Next?

The one-wallet implementation is only the starting point.

A larger system could add:

  • Multi-wallet coordination
  • Real-time launch monitoring
  • Transaction tracking
  • Telegram notifications
  • Risk filters
  • Wallet management
  • Execution monitoring

But I recommend understanding the single-wallet flow first. Once you understand the contract calls, tax calculation, transaction value, and execution flow, the larger architecture becomes much easier to build.

Source Code

I've collected my Robinhood Chain trading-bot research, strategies, and development projects here:

[Robinhood Trading Bot System — GitHub]

GitHub logo Benjam1nCup / Robinhood-Trading-Bot-System

Robinhood Token Trading Bot Robinhood Bot Robinhood copy trading bot Robinhood sniper bot Robinhood bundler bot Robinhood volume booster bot Robinhood Chain Trading Bot Robinhood Bot Robinhood copy trading bot Robinhood sniper bot Robinhood bundler bot Robinhood volume booster bot Robinhood Chain Trading Bot Robinhood Bot Robinhood copy trading bot

Robinhood Chain Trading Bot | Robinhood Chain Sniper Bot | Robinhood Chain Copy Trading Bot

An open-source and Strong Strategy collection of Robinhood Chain trading bot and Robinhood Chain sniper bot and Robinhood Chain copy trading bot in Python for high-performance automated on-chain trading.

Robinhood bot dashboard

This repository is primarily intended for educational and research purposes. It includes strategy concepts, implementation approaches, and selected performance screenshots to help developers understand how different automated trading strategies can be designed and tested on Robinhood Chain.

Robinhood Chain is an Ethereum-compatible Layer-2 blockchain built with Arbitrum technology. The mainnet uses Chain ID 4663, ETH as the native gas token, and provides EVM-compatible infrastructure for developers building on-chain applications and trading systems.

The repository does not provide a complete production-ready trading bot source code. Instead, it provides strategy descriptions and research materials that you can use as a foundation for developing your own system.

If you…


View on GitHub


The repository covers different Robinhood Chain bot concepts, including sniper bots, copy trading, token launch research, liquidity strategies, arbitrage, and other automated trading ideas.

If you're interested in custom Robinhood Chain trading-bot development or want to discuss this project:

Telegram: [@BenjaminCup]
https://t.me/BenjaminCup

Disclaimer: This project is for educational and research purposes. Always verify smart-contract addresses and current protocol mechanics before interacting with a live blockchain. Never expose your private keys.

Top comments (0)