We are upgrading our Monad Mainnet infrastructure to v0.16.2. This release delivers JSON-RPC error code corrections, improved zero-fee call handling, EIP-1898 compatibility fixes, and enhanced robustness across consensus and RPC layers.
During the maintenance window, brief interruptions to RPC availability may occur.
RPC Changes: - eth_call — JSON-RPC error codes have been corrected; zero maxFeePerGas values are no longer raised to the base fee, matching geth and reth behavior. - eth_estimateGas — JSON-RPC error codes and messages have been corrected. - eth_simulateV1 — JSON-RPC error codes and messages have been corrected. - eth_createAccessList — Now accepts state overrides as an additional parameter. - debug_* methods — JSON-RPC error codes and messages have been corrected across all debug_* handlers. - BlockTagOrHash parameter — EIP-1898 compatibility has been fixed for methods accepting block tag or hash parameters. - eth_feeHistory — Now includes a concurrency limiter to bound memory consumption on large block ranges. - WebSocket handlers — JSON-RPC error codes and messages have been corrected for WebSocket subscriptions and responses.