[Urgent] Starknet Mainnet - Upgrade to Pathfinder v0.24.0

Scheduled for Sep 14, 14:00 - 20:00 UTC

Scheduled

We are upgrading our Starknet Mainnet infrastructure to Pathfinder v0.24.0. This release enables support for Starknet 0.14.4, improves RPC WebSocket reliability and connection limits, and hardens the feeder-gateway trace fallback against slow or untrusted responses.

During the maintenance window, brief interruptions to RPC availability may occur.

RPC Changes:
- WebSocket connections — Server now initiates pings to detect inactive clients; clients MUST respond to pings per RFC 6455 or face disconnection. Clients that do not read from the connection for longer than the ping interval times the missed ping limit will be disconnected. The keepalive cannot be disabled; ping interval, initial frame timeout, and max missed pings all reject 0 as a value.
- WebSocket connection limit — Concurrently open RPC WebSocket connections are now limited to 1024 by default; upgrade requests exceeding this limit are rejected with HTTP 503.
- WebSocket initial frame timeout — RPC WebSocket connections that do not send anything after being established now time out.
- WebSocket subscription teardown — Subscriptions are now torn down when their WebSocket connection closes, instead of at the next send attempt.

https://github.com/equilibriumco/pathfinder/releases/tag/v0.24.0
Posted Sep 09, 2026 - 14:51 UTC
This scheduled maintenance affects: Starknet (Mainnet — Websockets API, Sepolia — Websockets API).