Listing Sniper Bot — Robinhood Chain

Sniping an Arbitrum-stack L2 is not sniping Ethereum

This is the part most teams get wrong when they port a bot over, so it's worth being blunt about it.

On Ethereum L1 you fight a gas auction: your transaction sits in a public mempool and the builder ranks it by priority fee. On Solana you fight for leader inclusion with Jito bundles and priority fees. Robinhood Chain is an Ethereum L2 built on the Arbitrum stack, and it works differently: transactions go to a sequencer, which orders them essentially first-come, first-served by arrival time. There is no public mempool to outbid, and no bundle auction to win.

That single fact rewrites the strategy:

• Bidding more gas does not buy you priority. Overpaying just burns money.
• Latency to the sequencer endpoint is the entire race. Milliseconds of network path, connection reuse, and pre-signing decide who is first.
• There is no mempool to watch for other people's pending buys the way you would on L1 — detection has to come from the event stream and from the sequencer feed, not from front-running someone else's pending transaction.

With ~100ms blocks, the window between "listing lands" and "price has moved" is small and mechanical. It rewards engineering, not bravado.

What the bot actually does

• Detection: watches pool-creation and liquidity-add events across the venues live on the chain (Uniswap, Arcus, Lighter, 1inch, Rialto), plus new Stock Token deployments, and fires the instant one appears.
• Simulation before submission: every buy is simulated — can you sell it back, is there a transfer tax, is the liquidity real and locked, is the contract doing something it shouldn't. A snipe you can't exit is not a win.
• Latency-tuned submission: persistent connections, pre-signed and pre-warmed transactions, nonce management, and a submission path built for sequencer FCFS rather than a fee auction.
• Exit logic: configurable take-profit, trailing stop, auto-sell, plus a kill-switch and structured logs so you can actually audit what happened.

// detection is event-driven, not mempool-driven, on an Arbitrum-stack L2
publicClient.watchEvent({
  address: FACTORY,
  event: parseAbiItem("event PoolCreated(address indexed token0, address indexed token1, address pool)"),
  onLogs: async (logs) => {
    for (const log of logs) {
      if (!(await simulateBuyAndSell(log.args.pool))) continue; // skip honeypots
      await submitPreSigned(log.args.pool); // latency race to the sequencer
    }
  },
});

Honest limits

The chain is days old, so nobody has a long track record here — including us. What we can say is that the mechanics are well understood (this is EVM on a known stack), the venues are documented, and the competitive field is thin right now precisely because it is new. That is the opportunity and the risk in one sentence.

Two things worth being clear about: Stock Tokens give economic exposure, not share ownership, and they are not available in the US (with restrictions in several other jurisdictions). Any bot you run here has to respect where you actually are.

We build snipers on Solana and EVM as a matter of routine — the same detection, simulation and exit discipline, retargeted at a sequencer-ordered L2. If you want the venue and the edge sanity-checked before committing budget, a strategy consultation is the cheaper first step.

Want to be early on Robinhood Chain listings while the field is still thin? Get a listing sniper built.