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How many instructions can I add to a single transaction?
I am looking to create a bulk spl-token airdrop script using nodeJS and Solana npm packages.
I know that we can add multiple instructions to a transaction but I suppose, each instruction would have a different size.
How to calculate how many (X type of) instructions can be added to a transaction?
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2 Answers
I don't think there is a limit, but every transaction must stay below 1232 bytes. So you can calculate it when you know the size of your instructions. (1232 bytes - (signers, feepayer, account keys etc) / instruction size) should give you a good idea.
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I recently solved this problem by creating 2 transactions. Let's call it tx 1 and 2.
If I added an instruction to tx 2 and serialize it successfully without an exception, I add it to tx 1.
I ran this over a loop, and found 55 instructions to be the limit for a transaction for my particular use case.
I then sign and transmit tx 1.
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How many instructions can I add to a single transaction?
I am looking to create a bulk spl-token airdrop script using nodeJS and Solana npm packages.
I know that we can add multiple instructions to a transaction but I suppose, each instruction would have a different size.
How to calculate how many (X type of) instructions can be added to a transaction?
3171 silver badge10 bronze badges
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I don't think there is a limit, but every transaction must stay below 1232 bytes. So you can calculate it when you know the size of your instructions. (1232 bytes - (signers, feepayer, account keys etc) / instruction size) should give you a good idea.
7,7991 gold badge7 silver badges28 bronze badges
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