Is there a way to test Polkadot and Kusama RPC client applications for a runtime upgrade before it gets enacted? i.e. Is there a way to emulate the upgraded runtime in a sandbox environment?

1 Answer 1


not sure what you want here, for test a runtime upgrade or a polkadot rpc client which will connect to the new runtime.

usually before on-chain upgrade in polkadot/kusama we use polkadot-launch to launch a test-net locally and do whatever test first

and for test a runtime upgrade you need to integrate try-runtime into your parachain nodes and test locally first

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    – Community Bot
    Mar 19, 2022 at 14:20
  • It's the latter, testing an RPC client that will connect to the new runtime. I think polkadot-launch is what I'm after, I'll give it a shot, thanks!
    – kukabi
    Mar 19, 2022 at 18:08

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