What local execution does—and does not—mean
Local execution describes where an application runs and where signing is handled. It does not mean every data request or transaction route stays on your computer: RPC providers, network paths, relays, and builders may remain external.
FRB Agent is a non-custodial Windows application, and signing keys remain local. This product boundary does not by itself prove that a selected endpoint is local or that a transaction is private.
Three separate questions to evaluate
Key control
Check where keys are created and stored, what actions the application can authorize, and which steps require your approval. Keep the release and device security in scope.
Network path
Identify each RPC, WebSocket, relay, and builder involved. Record which provider receives data and what happens if it rejects, delays, or cannot process a request.
Simulation
Confirm which chain, block state, inputs, and provider responses are used. A simulation is a conditional review of that setup, not a promise about a later block.
A practical due-diligence checklist
Ask for observable product behavior and provider documentation rather than relying on labels such as “local”, “private”, or “protected”.
Signing boundary
Can you verify where signing occurs and whether private keys leave your device? Review permissions and the official security documentation.
Simulation scope
Which state and block context are simulated? Which contracts, network conditions, or changing inputs are outside the simulation?
Submission and inclusion
Which endpoint receives the signed transaction or bundle? What are its inclusion conditions, failure behavior, and fallback routes?
Costs and recovery
Account for network fees, slippage, failed transactions, liquidity changes, and market losses. Decide how you will monitor and recover from endpoint or device failures.
Important limits
A locally run application still depends on the machine, its configuration, and external network services. Simulation results can differ from later chain state; private submission does not guarantee inclusion, ordering, or protection from every form of MEV. Check the selected provider’s current documentation.
Primary technical references
FRB Agent product boundary
FRB Agent is a non-custodial Windows execution assistant with local signing keys. Review the setup, security, pricing, and risk information for the current release; do not infer additional infrastructure features from this general guide.
Read the quickstart