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SIMD-0406 Maximum instruction accounts

ReviewCoreStandardcreated 2025-11-19

Authors: Alexander Meißner (Anza), Lucas Steuernagel (Anza)

This SIMD imposes a hard restriction on the maximum number of account references that an instruction may declare. There is already a limit of 255 account references imposed during serialization in ABI v0 and v1, but it does not currently apply to builtin invocations or precompiles.

Feature gate

The account below is the gate. Its state is decoded from the account data on each cluster, so it reflects the chain rather than the proposal text.

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mainnetNot on chain
testnetNot on chain
devnetNot on chain

What the proposal covers

Parsed from the canonical proposal · pull request