Solana transaction simulator that runs inside the stream

Get predicted success or failure against current Solana state before on-chain execution

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Transactions In.
Execution Signals Out.

Turn Transaction Data Into Execution Decisions

RPC Fast adds real-time simulation to incoming Solana transactions, turning raw transaction flow into an actionable execution signal. Instead of only seeing what is happening, your system can know what is likely to succeed.

Know the Outcome Before You Act

A Decision Layer Between Detection and Submission

Every incoming transaction is simulated against current Solana state, giving your strategy an execution signal before committing resources to the opportunity.

Real-time TX simulation

~95% execution agreement

Sub-millisecond median overhead 

Automatic failure filtering

Stream-native results

Built for automated strategies

Real-Time Simulation, ~95% accurate

A transaction enters the shred pipeline — before the block exists

Stream reconstructs and decodes it server-side

The simulation engine runs it against current state — ~800 µs median overhead

The result lands in your stream as a flag: will execute or will fail

Your bot skips the doomed ones — before they cost gas, compute, or a slot

Built for engines that pay for every wrong guess

MEV searchers

Drop doomed candidates before they burn tips.

Liquidation engines

Confirm the liquidation clears before committing a route.

Arbitrage desks

Price both legs on outcomes.

DEX aggregators

Filter reverting routes before they reach a user quote.

Launch snipers

Skip what reverts in the window.

Risk monitoring

Watch pending flow with outcomes already attached.

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