Technical Abstract
The FRB Agent employs a decentralized Local Execution Architecture, a paradigm shift that moves the computational overhead and cryptographic responsibility from centralized cloud servers directly to the user's localized hardware. By utilizing this "Edge Infrastructure" model, FRB Agent ensures that the searcher (the operator) maintains absolute sovereignty over strategy execution, latency profiles, and private key security.
In the current MEV landscape, where centralized relays and hosted bots introduce systemic risks such as censorship and custodial vulnerability, FRB Agent stands as a defensive and interactive infrastructure layer. It bridges the gap between high-level strategy logic and low-level protocol execution without requiring the user to trust a third-party intermediary with their financial secrets.
01The Sidecar Architecture
Unlike cloud-based "Black Box" bots that rely on remote API calls to trigger transactions—introducing unpredictable network hops—FRB Agent is designed to run as a Sidecar Process to the user's local or commercial blockchain node (e.g., Geth, Reth, or Solana RPC).
[ USER HARDWARE ]
│
├──► [ FRB DATA AGENT ] (Sidecar)
│ │
│ ├─► (A) IPC/WebSocket Connection (0ms Latency)
│ │
│ └─► [ LOCAL NODE / RETH ]
│ │
│ └─► [ P2P MEMPOOL SCAN ]
│
├──► [ SIGNING ENCLAVE ] (Local Key Storage)
│ │
│ └─► (B) ECDSA/Ed25519 Signature Generation
│
└──► [ BUNDLE PROPAGATION ]
│
└─► [ DIRECT TO BUILDER RELAY ] (Flashbots / Jito)This proximity to the node provides two primary technical advantages:
Zero-Hop Latency
By utilizing IPC (Inter-Process Communication) or local WebSockets, the agent eliminates the 50ms-200ms round-trip jitter associated with cloud-hosted bots.
State Consistency
Local execution ensures that the strategy engine is simulating against the same state seen by the local node, preventing "Stale State" failures.
Resource Optimization & Computational Overhead
Executing MEV strategies locally requires a careful balance between Scan Density and CPU Utilization. FRB Agent is optimized for modern multi-core Windows environments, utilizing highly efficient C++ and Rust-based decoding libraries to process thousands of mempool events per second without crashing the host OS.
The agent implements a Priority Filter system:
- Instruction Prefetching: Decodes only the transactions that interact with relevant contracts (DEXs, Lending Hubs).
- Volatile State Management: Strategy parameters and target opportunities are processed in volatile RAM. No strategy logic is ever serialized to long-term disk storage unless explicitly requested by the user for logging.
- Thread Isolation: The simulation engine runs on dedicated logical cores to prevent the user interface from lagging during high-activity market events.
The Client-Side Strategy Engine: A "White Box" Model
The core differentiation of FRB Agent is its commitment to the "White Box" Infrastructure model. In a standard bot service, your funds are sent to a contract, and an opaque server decides your fate. In FRB Agent, you are the pilot.
Phase-by-Phase Execution Flow
Signal Detection
The agent subscribes to pending transactions via a high-speed WebSocket. It filters for patterns like large imbalances in Uniswap pools or liquidation triggers.
Local Simulation
It forks the current blockchain state locally. It then 'dry runs' the proposed transaction sequence to calculate the exact net profit, including gas costs and slippage.
Bundle Construction
If profitable, the agent constructs a Flashbots (EVM) or Jito (Solana) bundle—a group of transactions that must execute atomically.
Secure Signing
The agent generates a signature using the local enclave. This is the only moment the user's keys are active, and it happens entirely on the user's machine.
Direct Propagation
The signed bundle is sent physically to the block builder's REST or gRPC endpoint, bypassing the public mempool where 'Predatory Searchers' reside.
Local vs. Hosted: A Performance Comparison
To understand the necessity of local execution, consider the "Race to the Builder". In the EVM, the builder (Flashbots) receives bundles from thousands of searchers. The first profitable bundle for a specific opportunity usually wins.
| Metric | Hosted Bot (Service) | FRB Agent (Local) |
|---|---|---|
| Network Jitter | High (Internet Dependent) | Near-Zero (Local IPC) |
| Key Custody | Third-Party (Custodial) | User (Non-Custodial) |
| State Update Latency | 150ms - 500ms | 1ms - 5ms |
| Censorship Resistance | Low (Provider can block) | High (Direct to Relays) |
Security Integrity & Code Signing
As a local executable, security is extended beyond the code to the binary itself. Every release of FRB Agent is Authenticode Signed. This ensures that the binary you run is exactly the one produced by our build pipeline, preventing man-in-the-middle attacks or malicious injections into the local execution engine.
Conclusion: The Infrastructure Mandate
The Local MEV Execution Architecture is the only viable path for professional searchers who prioritize long-term asset security and competitive advantage. By eliminating intermediaries and optimizing the local hardware stack, FRB Agent provides a foundation for complex, non-custodial blockchain interaction at scale.
Related Research & Infrastructure
Local MEV Architecture
Technical deep dive into zero-latency local execution architecture.
Non-Custodial Infra
Understanding how FRB maintains 100% asset sovereignty.
footer.links.transactionOrdering
Simulation and bundle construction logic explained.
Why FRB is Not a Bot
Why FRB is professional infrastructure, not a simple bot.