In Remix, there is a Contracts tab, where I can choose the "Execution environment". When I choose "Web3 Provider", I am asked to provide the "Web3 provider endpoint". What should I write there in order to connect to the public Kovan testnet?

(I hope the question makes sense... I am entirely new to Ether)

2 Answers 2


run parity with parity --chain kovan. and then in your endpoint provide http://localhost:8545 or

8545 is the RPC port

  • I have problems installing Parity. Isn't there a way to connect to Kovan testnet without installing a software? Don't they have a "Web3 provider endpoint"? Commented May 17, 2017 at 5:28
  • As i know parity is the only client who can connect you to kovan.
    – Badr Bellaj
    Commented May 17, 2017 at 8:49

Download and use the chrome extension called Matamask and connect your account into. (if you haven't done yet)

then click on Show/Hide test networks

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Then turn the switch ON

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Then change the network to Kaven in Metamask

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Then in Remix change the Environment to Injected Web3

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The Metamask will popup and want you to connect the Remix to it. just follow the steps. (if it didn't change to Injected Web3 you should wait for a few moments and if still didn't change or you are living in Iran use a VPN and try again)

Congrats you have connected your Remix to Kovan testnet.

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