[Introduction]
Trading on Solana is the "Wild West." When a new token launches on Pump.fun, you have mere milliseconds to buy it before the price skyrockets. In this article, I’ll share how we built our own sniper bot, grappled with RPC issues, completely overhauled our architecture, and implemented Jito MEV to ensure guaranteed transaction execution.
[Problem]
Initially, our bot operated as a standard client:
It sent transactions via a public RPC.
I was waiting for confirmation in the mempool.
I kept receiving "Transaction Expired" or "ProgramAccountNotFound" errors.
We spent money on network fees, but the transactions did not go through. We realized: standard methods do not work under conditions of high load.
[Solution: Why Jito?]
We have revamped our approach. The bot now utilizes the Jito Block Engine.
What this offers: We send bundles (batches of transactions) directly to validators.
Result: If a transaction passes the audit, it is significantly more likely to be included in a block. We have stopped paying for "air" and failed transactions.
[Technical Insights]
We have implemented several critical improvements:
Background Blockhash Worker: Updates the blockhash every 2000ms. This allowed us to avoid waiting for fresh data from the RPC at the moment of purchase.
ATA Management: Automated creation of associated token accounts, which eliminated transaction errors.
RPC Optimization: Switching to paid nodes (Helius) to avoid 429 Too Many Requests limits.
[Code Preview]
Insert the shortest, most visually appealing piece of your code here (for example, sending a Jito bundle).
TypeScript
// Example of sending via Jito
const bundle = new Bundle([transaction], 1);
await jitoClient.sendBundle(bundle);
[Summary]
The bot is fully functional, open to the community, and available on GitHub. We continue to develop the project and welcome any support (donations are welcome!).
GitHub: https://github.com/rdin777/solana-trading-bot
Support: 8RpjaJQmCrRvKHMXA5ak4CrrLNJnJionwxMfTRG8YAS
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