[Urgent] Monad Testnet Upgrade to v0.14.1

Scheduled Maintenance Report for Quicknode

Completed

Maintenance has been completed.
Posted Apr 10, 2026 - 13:10 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Apr 10, 2026 - 07:30 UTC

Scheduled

We are updating our Monad Testnet infrastructure to Monad v0.14.1. During the maintenance window, brief interruptions to RPC availability may occur.


RPC Changes:
eth_fillTransaction — new endpoint
Returns a fully populated transaction (gas, nonce, fees, etc.) without requiring a signature. Useful for transaction preparation flows.
eth_fillTransaction — modified
Calls that fail due to insufficient reserve balance now return reserve balance violation instead of insufficient balance. Callers matching on the exact error string should update accordingly. Gas estimation for omitted-gas fills is also now more permissive.
WebSocket subscriptions — modified
newHeads and logs subscriptions now emit on proposed blocks instead of voted blocks, reducing notification latency. Clients with timing-sensitive subscription logic should account for the earlier emission point.
eth_getLogs block tags — fixed
Block tag handling in eth_getLogs has been corrected. Queries using tags like latest or pending may return different results than before if previous behavior was incorrect.

https://github.com/monad-xyz/monad/releases/tag/v0.14.1
Posted Apr 08, 2026 - 14:46 UTC
This scheduled maintenance affected: Monad (Testnet — JSON-RPC API, Testnet — Websockets API, Testnet — Streams, Testnet — Webhooks).