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grandpa_roundState – Mythos JSON-RPC Method

Provides detailed GRANDPA round information, including the current set ID, active round, total authority weight, and which validators have prevoted or precommitted. Useful for diagnosing finality stalls or monitoring consensus health.

Parameters#

This method does not take parameters.

Returns#

A structured object containing the current round, total weight, threshold, and arrays of missing votes.

Request Example#

{
  "jsonrpc": "2.0",
  "method": "grandpa_roundState",
  "params": [],
  "id": 1
}

Usage Tips#

  • Combine with chain_subscribeFinalizedHeads to alert when rounds take longer than expected.
  • The missing arrays highlight validators that have not yet submitted votes—handy for collator operations teams.