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currently in ripple when i need to check how much is the minimum required to keep account valid there is a property called reserve base XRP is there something similar in stellar? because to write hard coded 1 XML is not what i am looking for. so i guess there must be a way to figure what is the minimum that requires to keep an account valid.

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If you query the /accounts/{account_id} endpoint, the subentry_count will tell you how many sub entries the account has.

The reserve is basereserve * (2 + subentry_count)

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  • i am still do not know how to get the "basereserve" for this equation - this as my main question. what is the way to get it? Jan 2 '19 at 10:05
  • I might link it again... stellar.org/developers/guides/concepts/… :)
    – Synesso
    Jan 2 '19 at 10:24
  • the basereserve is included in the ledger headers. Using the JS SDK, const ledger = await server.ledgers().order('desc').limit(1).call();, then get either base_reserve or base_reserve_in_stroops Jan 2 '19 at 10:53
  • so, it does not always return same response? i mean 1 ledger can give base_reserve_in_stroops and the other base_reserve? and 100000000 in stroops is 1 xlm? btw, Synesso - i only now saw the link at the bottom of the page reffers to the param. Jan 2 '19 at 14:11
  • The property name depends on the protocol version. I don't remember when it changed. I check for both of them. Jan 2 '19 at 15:27
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The minimum account balance is a function of the number of entries on the account.

Every account needs 2 x base reserve. Then an additional 1 base reserve for every entry. Entries include:

  • Trustlines
  • Offers
  • Signers; and
  • Data Entries

See minimum account balance in the documentation.

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As Johan pointed out, you can find the base reserve or minimum balance required for a stellar account from subentry_count. Here is an example in Javascript.

const base_reserve = 0.5
basic.minbalance = function minbalance(req, result)
{
    StellarSdk.Network.useTestNetwork();
    server.accounts().accountId(req.query.PublicKey).call()
                .then(function (accountResult)
                {
                    var asset_count = accountResult.subentry_count;
                    var min_balance = ((2 + asset_count) * base_reserve);

                     result(null,
                    {
                        "count": asset_count, // gives number of assets with trustline
                        "min_balance": min_balance,

                    });
                });
  }

This is just a sample, ensure you have imported stellar-sdk,

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