Multi-Provider RPC Load Balancer Configurer

WHAT IT DOES Multi-Provider RPC Load Balancer Configurer is a read-only developer tool that tests multiple RPC endpoints and generates load balancer configurations for EVM applications. It sequentially tests each user-provided endpoint using eth_blockNumber (latency), eth_chainId (network validation), eth_gasPrice (network conditions), and web3_clientVersion (node identification). The tool supports three load balancing strategies—Round Robin (cycles through endpoints), Least Latency (picks the fastest endpoint), and Weighted (custom weights)—and generates ready-to-use JavaScript configuration code. The output includes a getProvider() function with the selected strategy, retry logic with failover, comprehensive endpoint health results, and Prometheus-style metrics. This helps developers build resilient RPC architectures that distribute load across multiple providers and automatically failover when endpoints degrade. HOW TO USE Connect your EVM-compatible wallet via the BGWallet bridge and select the network you are targeting. Enter your RPC endpoints (one per line) in the textarea—include multiple providers for redundancy (e.g., Alchemy, Infura, Ankr, QuickNode). Select a load balancing strategy (Round Robin, Least Latency, or Weighted). Click "Generate Load Balancer Config" to test all endpoints and produce a comprehensive configuration. Results include per-endpoint test results (status, latency, block number, chain ID), a sorted health summary, and a complete JavaScript configuration with provider selection, retry logic, and failover handling. All analysis is read-only—no signatures or transactions are submitted. TECHNICAL MECHANISM The tool uses ethers.js v5.7.2 to create a JsonRpcProvider for each endpoint and performs a sequence of RPC calls. For each endpoint, it measures: (1) eth_blockNumber latency (time to first response), (2) eth_chainId to validate the endpoint is on the expected network, (3) eth_gasPrice to verify fee-related RPC functionality. Endpoints are categorized as healthy (latency < 1000ms, correct chain), degraded (latency 1000-2000ms), slow (latency > 2000ms), wrong_chain, or unhealthy (any RPC method fails). Healthy endpoints are sorted by latency. For Round Robin, the configuration cycles through the endpoint list in order. For Least Latency, the configuration always selects the lowest-latency endpoint. For Weighted, the configuration assigns equal weights that users can modify. All configurations include retry logic that attempts each endpoint in sequence before throwing an error. The generated code includes complete examples with error handling, logging, and fallback behavior. The tool also provides Prometheus-style metrics for monitoring integration. WHAT IT CANNOT SEE This tool has fundamental limitations that users must understand. It cannot actually deploy or configure a production load balancer—the tool generates configuration snippets but does not integrate with any load balancer services (AWS ELB, HAProxy, Nginx, etc.). It cannot guarantee real-time load balancing without a dedicated proxy or service—the generated code runs in the application, not at the network layer. It cannot account for fluctuating endpoint performance beyond the test snapshot—endpoint latency varies over time and the configuration may become stale. It cannot automatically detect endpoint degradation after configuration generation—the tool does not perform continuous monitoring. It cannot handle endpoint failover or retry logic without manual implementation—the tool generates code that must be integrated into the application. It cannot support WebSocket endpoints—the configuration is for HTTP/HTTPS JSON-RPC only. It cannot detect endpoint-specific quirks like stale data, inconsistent responses, or partial failures that don't cause explicit RPC errors. It cannot account for API key rate limits or quota differences across providers. The generated configuration is a template and may require customization for specific application patterns. PLEASE NOTE This tool only supports EVM-compatible blockchains (Ethereum, Polygon, BSC, Avalanche C-Chain, Optimism, Arbitrum, and their testnets). Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported. The tool is free, open-source, requires no API keys, and uses the wallet's native provider for all read operations. Always test load balancer configurations in a development environment before deploying to production.