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I'm trying to fetch the stats (amount raised, remaining time) of specific crowdloan using Polkadot.js API however I can't find any examples or docs explaining the crowdloan queries.

It is certainly possible as Polkadot.js app shows this under /apps/#/parachains/crowdloan path.

Anyone has example how to get this data?

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If for example you are interested in fetching the stats you mentioned for the paraId = 2037 in Polkadot, then you could try running the following example code in Polkadot-js apps > Developer menu > Javascript submenu :

const paraInfo = await api.query.crowdloan.funds(2037);
console.log(JSON.stringify(paraInfo, null, 4));

and it will give you the following result :

{
    "depositor": "14bEKMdGLwGKNTz4BtT7venXZ4RcXdGfBSdEYrJLPNoHRvoK",
    "verifier": null,
    "deposit": 5000000000000,
    "raised": "0x0000000000000000001b1201976cc6ed",
    "end": 10881401,
    "cap": "0x00000000000000000214e8348c4f0000",
    "lastContribution": {
        "ending": 9829425
    },
    "firstPeriod": 8,
    "lastPeriod": 15,
    "fundIndex": 31
}

I think you are interested in the values associated with the keys raised and end ?

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  • Thanks! Let me try that!
    – Jan Kraus
    Apr 11, 2022 at 18:41
  • This worked perfectly! Is there any link to docs where this is documented?
    – Jan Kraus
    Apr 12, 2022 at 0:19
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    It is not documented but we are thinking of adding some queries related to parachains and crowdloans. Until then, when you face a similar issue, you could try searching in polkadot-js api repo with keywords related to your question. In this case if you search with keywords crowdloan info or crowdloan query the result is this line https://github.com/polkadot-js/api/blob/3ded30a0f308b5954bd9c2c0ff91abf81a273d67/packages/api-derive/src/crowdloan/childKey.ts#L38 which gives you the actual query you need to do. Or you can always post a question here and someone will be happy to help :)
    – dominique
    Apr 12, 2022 at 7:26

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