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I really just need to listen for events coming from the smart contract. Metamask works good on pc but it wont work on mobile and other circumstances. I was thinkng about an open api from infura but still I'm not sure it allows events watching. Do you have any idea?

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Infura doesn't allow filter creation over HHTTPProvider, but it does by WebSocket, which is, in fact, faster than HTTP. So you can use web3 and infura to create a webpage that watches events, this will run on any platform.

Hope this helps

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  • is the api key needed for just reading events?
    – user38075
    Commented Jun 1, 2018 at 14:49
  • Yes, but the only thing you need to do is to fill a form (it is free), if you do not want to identify your personal email just create quickly a new one and register that one.
    – Jaime
    Commented Jun 1, 2018 at 14:59
  • for the websocket API a key is not needed: infura.io/docs/wss/introduction
    – pors
    Commented Oct 5, 2018 at 18:35

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