I Sniped a Solana Token in 400ms — Here's the Full Tech Stack When Solana's latest meme token dropped last week, I built a sniper bot that executed in 400ms flat—from detecting the mint to confirmed on-chain swap. Here's the exact technical breakdown of how it worked, including the Jito MEV bundles, Jupiter routing tricks, and Helius RPC optimizations that made it possible. The 400ms Breakdown 0-50ms : Helius webhook detects new mint (via programSubscribe for spl-token instructions) 50-150ms : Bot fetches pool creation tx and derives liquidity pool address 150-250ms : Jupiter API computes optimal swap route (with enforced slippage limits) 250-400ms : Jito bundle submission and on-chain execution Core Stack Components 1. Real-Time Mint Detection (Helius Webhooks) Helius' enhanced RPC provides webhooks for program events without polling. Here's the subscription setup: const subscription = await heliusConnection .…