Loans¶

Calls¶

activate_market¶

Activates a market. Returns Err if the market does not exist.

If the market is already active, does nothing.

asset_id: Currency to enable lending and borrowing for.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'activate_market', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

add_market¶

Creates a new lending market for a given currency. Returns Err if a market already exists for the given currency.

All provided market states must be Pending, otherwise an error will be returned.

The lend_token id specified in the Market struct has to be unique, and cannot be later reused when creating a new market.

asset_id: Currency to enable lending and borrowing for.
market: Configuration of the new lending market

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
market	`Market<BalanceOf<T>>`

Python¶

call = substrate.compose_call(
    'Loans', 'add_market', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'market': {
        'borrow_cap': 'u128',
        'close_factor': 'u32',
        'collateral_factor': 'u32',
        'lend_token_id': {
            'ForeignAsset': 'u32',
            'LendToken': 'u32',
            'LpToken': (
                {
                    'ForeignAsset': 'u32',
                    'StableLpToken': 'u32',
                    'Token': (
                        'DOT',
                        'IBTC',
                        'INTR',
                        'KSM',
                        'KBTC',
                        'KINT',
                    ),
                },
                {
                    'ForeignAsset': 'u32',
                    'StableLpToken': 'u32',
                    'Token': (
                        'DOT',
                        'IBTC',
                        'INTR',
                        'KSM',
                        'KBTC',
                        'KINT',
                    ),
                },
            ),
            'StableLpToken': 'u32',
            'Token': (
                'DOT',
                'IBTC',
                'INTR',
                'KSM',
                'KBTC',
                'KINT',
            ),
        },
        'liquidate_incentive': 'u128',
        'liquidate_incentive_reserved_factor': 'u32',
        'liquidation_threshold': 'u32',
        'rate_model': {
            'Curve': {
                'base_rate': 'u128',
            },
            'Jump': {
                'base_rate': 'u128',
                'full_rate': 'u128',
                'jump_rate': 'u128',
                'jump_utilization': 'u32',
            },
        },
        'reserve_factor': 'u32',
        'state': (
            'Active',
            'Pending',
            'Supervision',
        ),
        'supply_cap': 'u128',
    },
}
)

add_reserves¶

Add reserves by transferring from payer. TODO: This extrinsic currently does nothing useful. See the TODO comment of the ensure_enough_cash function for more details. Based on that TODO, decide whether this extrinsic should be kept.

May only be called from T::ReserveOrigin.

payer: the payer account.
asset_id: the assets to be added.
add_amount: the amount to be added.

Attributes¶

Name	Type
payer	`<T::Lookup as StaticLookup>::Source`
asset_id	`CurrencyId<T>`
add_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'add_reserves', {
    'add_amount': 'u128',
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'payer': 'AccountId',
}
)

add_reward¶

Deposit incentive reward currency into the pallet account.

amount: Reward amount added

Attributes¶

Name	Type
amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'add_reward', {'amount': 'u128'}
)

borrow¶

The caller borrows borrow_amount of asset_id from the protocol, using their supplied assets as collateral.

asset_id: the asset to be borrowed.
borrow_amount: the amount to be borrowed.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
borrow_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'borrow', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'borrow_amount': 'u128',
}
)

claim_reward¶

Claim incentive rewards for all markets.

Attributes¶

No attributes

Python¶

call = substrate.compose_call(
    'Loans', 'claim_reward', {}
)

claim_reward_for_market¶

Claim inceitve reward for the specified market.

asset_id: Market related currency

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'claim_reward_for_market', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

deposit_all_collateral¶

Caller enables their lend token balance as borrow collateral. This operation locks the lend tokens, so they are no longer transferrable. Any incoming lend tokens into the caller's account (either by direct transfer or minting) are automatically locked as well, such that locking and unlocking borrow collateral is an atomic state (a "collateral toggle"). If any of the caller's lend token balance is locked elsewhere (for instance, as bridge vault collateral), this operation will fail. If this operation is successful, the caller's maximum allowed debt increases.

asset_id: the underlying asset denoting the market whose lend tokens are to be enabled as collateral.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'deposit_all_collateral', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

force_update_market¶

Force updates a stored market. Returns Err if the market currency does not exist.

asset_id: market related currency
market: Configuration of the new lending market

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
market	`Market<BalanceOf<T>>`

Python¶

call = substrate.compose_call(
    'Loans', 'force_update_market', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'market': {
        'borrow_cap': 'u128',
        'close_factor': 'u32',
        'collateral_factor': 'u32',
        'lend_token_id': {
            'ForeignAsset': 'u32',
            'LendToken': 'u32',
            'LpToken': (
                {
                    'ForeignAsset': 'u32',
                    'StableLpToken': 'u32',
                    'Token': (
                        'DOT',
                        'IBTC',
                        'INTR',
                        'KSM',
                        'KBTC',
                        'KINT',
                    ),
                },
                {
                    'ForeignAsset': 'u32',
                    'StableLpToken': 'u32',
                    'Token': (
                        'DOT',
                        'IBTC',
                        'INTR',
                        'KSM',
                        'KBTC',
                        'KINT',
                    ),
                },
            ),
            'StableLpToken': 'u32',
            'Token': (
                'DOT',
                'IBTC',
                'INTR',
                'KSM',
                'KBTC',
                'KINT',
            ),
        },
        'liquidate_incentive': 'u128',
        'liquidate_incentive_reserved_factor': 'u32',
        'liquidation_threshold': 'u32',
        'rate_model': {
            'Curve': {
                'base_rate': 'u128',
            },
            'Jump': {
                'base_rate': 'u128',
                'full_rate': 'u128',
                'jump_rate': 'u128',
                'jump_utilization': 'u32',
            },
        },
        'reserve_factor': 'u32',
        'state': (
            'Active',
            'Pending',
            'Supervision',
        ),
        'supply_cap': 'u128',
    },
}
)

liquidate_borrow¶

The caller liquidates the borrower's collateral. This extrinsic may need to be called multiple times to completely clear the borrower's bad debt, because of the close_factor parameter in the market. See the close_factor_may_require_multiple_liquidations_to_clear_bad_debt unit test for an example of this.

borrower: the borrower to be liquidated.
liquidation_asset_id: the underlying asset to be liquidated.
repay_amount: the amount of liquidation_asset_id to be repaid. This parameter can only be as large as the close_factor market parameter allows (close_factor * borrower_debt_in_liquidation_asset).
collateral_asset_id: The underlying currency whose lend tokens to seize from the borrower. Note that the liquidator has to redeem the received lend tokens from the market to convert them to collateral_asset_id.

Attributes¶

Name	Type
borrower	`T::AccountId`
liquidation_asset_id	`CurrencyId<T>`
repay_amount	`BalanceOf<T>`
collateral_asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'liquidate_borrow', {
    'borrower': 'AccountId',
    'collateral_asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'liquidation_asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'repay_amount': 'u128',
}
)

mint¶

The caller supplies (lends) assets into the market and receives a corresponding amount of lend tokens, at the current internal exchange rate.

asset_id: the asset to be deposited.
mint_amount: the amount to be deposited.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
mint_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'mint', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'mint_amount': 'u128',
}
)

redeem¶

The caller redeems lend tokens for the underlying asset, at the current internal exchange rate.

asset_id: the asset to be redeemed
redeem_amount: the amount to be redeemed, expressed in the underyling currency (asset_id)

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
redeem_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'redeem', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'redeem_amount': 'u128',
}
)

redeem_all¶

The caller redeems their entire lend token balance in exchange for the underlying asset. Note: this will fail if the account needs some of the collateral for backing open borrows, or if any of the lend tokens are used by other pallets (e.g. used as vault collateral)

asset_id: the asset to be redeemed.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'redeem_all', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

reduce_incentive_reserves¶

Sender redeems some of internal supplies in exchange for the underlying asset.

asset_id: the asset to be redeemed.
redeem_amount: the amount to be redeemed.

Attributes¶

Name	Type
receiver	`<T::Lookup as StaticLookup>::Source`
asset_id	`CurrencyId<T>`
redeem_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'reduce_incentive_reserves', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'receiver': 'AccountId',
    'redeem_amount': 'u128',
}
)

reduce_reserves¶

Reduces reserves (treasury's share of accrued interest) by transferring to receiver.

May only be called from T::ReserveOrigin.

receiver: the receiver account.
asset_id: the assets to be reduced.
reduce_amount: the amount to be reduced.

Attributes¶

Name	Type
receiver	`<T::Lookup as StaticLookup>::Source`
asset_id	`CurrencyId<T>`
reduce_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'reduce_reserves', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'receiver': 'AccountId',
    'reduce_amount': 'u128',
}
)

repay_borrow¶

The caller repays some of their debts.

asset_id: the asset to be repaid.
repay_amount: the amount to be repaid, in the underlying currency (asset_id).

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
repay_amount	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'repay_borrow', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'repay_amount': 'u128',
}
)

repay_borrow_all¶

The caller repays all of their debts.

asset_id: the asset to be repaid.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'repay_borrow_all', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

update_market¶

Updates a stored market. Returns Err if the market currency does not exist.

asset_id: market related currency
collateral_factor: the collateral utilization ratio
liquidation_threshold: The collateral ratio when a borrower can be liquidated
reserve_factor: fraction of interest set aside for reserves
close_factor: max percentage of debt that can be liquidated in a single transaction
liquidate_incentive_reserved_factor: liquidation share set aside for reserves
liquidate_incentive: liquidation incentive ratio
supply_cap: Upper bound of supplying
borrow_cap: Upper bound of borrowing

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
collateral_factor	`Option<Ratio>`
liquidation_threshold	`Option<Ratio>`
reserve_factor	`Option<Ratio>`
close_factor	`Option<Ratio>`
liquidate_incentive_reserved_factor	`Option<Ratio>`
liquidate_incentive	`Option<Rate>`
supply_cap	`Option<BalanceOf<T>>`
borrow_cap	`Option<BalanceOf<T>>`

Python¶

call = substrate.compose_call(
    'Loans', 'update_market', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'borrow_cap': (None, 'u128'),
    'close_factor': (None, 'u32'),
    'collateral_factor': (None, 'u32'),
    'liquidate_incentive': (
        None,
        'u128',
    ),
    'liquidate_incentive_reserved_factor': (
        None,
        'u32',
    ),
    'liquidation_threshold': (
        None,
        'u32',
    ),
    'reserve_factor': (None, 'u32'),
    'supply_cap': (None, 'u128'),
}
)

update_market_reward_speed¶

Updates reward speed for the specified market

The origin must conform to UpdateOrigin.

asset_id: Market related currency
supply_reward_per_block: supply reward amount per block.
borrow_reward_per_block: borrow reward amount per block.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
supply_reward_per_block	`Option<BalanceOf<T>>`
borrow_reward_per_block	`Option<BalanceOf<T>>`

Python¶

call = substrate.compose_call(
    'Loans', 'update_market_reward_speed', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'borrow_reward_per_block': (
        None,
        'u128',
    ),
    'supply_reward_per_block': (
        None,
        'u128',
    ),
}
)

update_rate_model¶

Updates the rate model of a stored market. Returns Err if the market currency does not exist or the rate model is invalid.

asset_id: Market currency
rate_model: The new rate model to set

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`
rate_model	`InterestRateModel`

Python¶

call = substrate.compose_call(
    'Loans', 'update_rate_model', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'rate_model': {
        'Curve': {'base_rate': 'u128'},
        'Jump': {
            'base_rate': 'u128',
            'full_rate': 'u128',
            'jump_rate': 'u128',
            'jump_utilization': 'u32',
        },
    },
}
)

withdraw_all_collateral¶

Caller disables their lend token balance as borrow collateral. This operation unlocks the lend tokens, so they become transferrable. This operation can only succeed if the caller's debt is backed by sufficient collateral excluding this currency.

asset_id: the underlying asset denoting the market whose lend tokens are to be disabled as collateral.

Attributes¶

Name	Type
asset_id	`CurrencyId<T>`

Python¶

call = substrate.compose_call(
    'Loans', 'withdraw_all_collateral', {
    'asset_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
}
)

Events¶

ActivatedMarket¶

Event emitted when a market is activated

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`

Borrowed¶

Event emitted when cash is borrowed

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

DepositCollateral¶

Enable collateral for certain asset

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

Deposited¶

Event emitted when assets are deposited

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

DistributedBorrowerReward¶

Deposited when Reward is distributed to a borrower

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
borrower	`T::AccountId`	`AccountId`
reward_delta	`BalanceOf<T>`	`u128`
borrow_reward_index	`BalanceOf<T>`	`u128`

DistributedSupplierReward¶

Deposited when Reward is distributed to a supplier

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
supplier	`T::AccountId`	`AccountId`
reward_delta	`BalanceOf<T>`	`u128`
supply_reward_index	`BalanceOf<T>`	`u128`

IncentiveReservesReduced¶

Event emitted when the incentive reserves are redeemed and transfer to receiver's account

Attributes¶

Name	Type	Composition
receiver	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

InterestAccrued¶

Event emitted when interest has been accrued for a market

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
total_borrows	`BalanceOf<T>`	`u128`
total_reserves	`BalanceOf<T>`	`u128`
borrow_index	`FixedU128`	`u128`
utilization_ratio	`Ratio`	`u32`
borrow_rate	`Rate`	`u128`
supply_rate	`Rate`	`u128`
exchange_rate	`Rate`	`u128`

LiquidatedBorrow¶

Event emitted when a borrow is liquidated

Attributes¶

Name	Type	Composition
liquidator	`T::AccountId`	`AccountId`
borrower	`T::AccountId`	`AccountId`
liquidation_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
collateral_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
repay_amount	`BalanceOf<T>`	`u128`
collateral_underlying_amount	`BalanceOf<T>`	`u128`

MarketRewardSpeedUpdated¶

Event emitted when market reward speed updated.

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
supply_reward_per_block	`BalanceOf<T>`	`u128`
borrow_reward_per_block	`BalanceOf<T>`	`u128`

NewMarket¶

New market is set

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
market	`Market<BalanceOf<T>>`	{'collateral_factor': 'u32', 'liquidation_threshold': 'u32', 'reserve_factor': 'u32', 'close_factor': 'u32', 'liquidate_incentive': 'u128', 'liquidate_incentive_reserved_factor': 'u32', 'rate_model': {'Jump': {'base_rate': 'u128', 'jump_rate': 'u128', 'full_rate': 'u128', 'jump_utilization': 'u32'}, 'Curve': {'base_rate': 'u128'}}, 'state': ('Active', 'Pending', 'Supervision'), 'supply_cap': 'u128', 'borrow_cap': 'u128', 'lend_token_id': {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}}

Redeemed¶

Event emitted when assets are redeemed

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

RepaidBorrow¶

Event emitted when a borrow is repaid

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

ReservesAdded¶

Event emitted when the reserves are added

Attributes¶

Name	Type	Composition
payer	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`
new_reserve_amount	`BalanceOf<T>`	`u128`

ReservesReduced¶

Event emitted when the reserves are reduced

Attributes¶

Name	Type	Composition
receiver	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`
new_reserve_amount	`BalanceOf<T>`	`u128`

RewardAdded¶

Reward added

Attributes¶

Name	Type	Composition
payer	`T::AccountId`	`AccountId`
amount	`BalanceOf<T>`	`u128`

RewardPaid¶

Reward Paid for user

Attributes¶

Name	Type	Composition
receiver	`T::AccountId`	`AccountId`
amount	`BalanceOf<T>`	`u128`

RewardWithdrawn¶

Reward withdrawed

Attributes¶

Name	Type	Composition
receiver	`T::AccountId`	`AccountId`
amount	`BalanceOf<T>`	`u128`

UpdatedMarket¶

New market parameters is updated

Attributes¶

Name	Type	Composition
underlying_currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
market	`Market<BalanceOf<T>>`	{'collateral_factor': 'u32', 'liquidation_threshold': 'u32', 'reserve_factor': 'u32', 'close_factor': 'u32', 'liquidate_incentive': 'u128', 'liquidate_incentive_reserved_factor': 'u32', 'rate_model': {'Jump': {'base_rate': 'u128', 'jump_rate': 'u128', 'full_rate': 'u128', 'jump_utilization': 'u32'}, 'Curve': {'base_rate': 'u128'}}, 'state': ('Active', 'Pending', 'Supervision'), 'supply_cap': 'u128', 'borrow_cap': 'u128', 'lend_token_id': {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}}

WithdrawCollateral¶

Disable collateral for certain asset

Attributes¶

Name	Type	Composition
account_id	`T::AccountId`	`AccountId`
currency_id	`CurrencyId<T>`	`{'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'LendToken': 'u32', 'LpToken': ({'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}, {'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'), 'ForeignAsset': 'u32', 'StableLpToken': 'u32'}), 'StableLpToken': 'u32'}`
amount	`BalanceOf<T>`	`u128`

Storage functions¶

AccountBorrows¶

Mapping of account addresses to outstanding borrow balances CurrencyId -> Owner -> BorrowSnapshot

Python¶

result = substrate.query(
    'Loans', 'AccountBorrows', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'AccountId',
]
)

Return value¶

{'borrow_index': 'u128', 'principal': 'u128'}

AccountDeposits¶

Mapping of account addresses to collateral deposit details CollateralType -> Owner -> Collateral Deposits

# Remarks

Differently from Parallel Finance's implementation of lending, AccountDeposits only represents Lend Tokens locked as collateral rather than the entire Lend Token balance of an account. If an account minted without also locking their balance as collateral, their corresponding entry in this map will be zero.

Python¶

result = substrate.query(
    'Loans', 'AccountDeposits', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'AccountId',
]
)

Return value¶

'u128'

BorrowIndex¶

Accumulator of the total earned interest rate since the opening of the market CurrencyId -> u128

Python¶

result = substrate.query(
    'Loans', 'BorrowIndex', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

BorrowRate¶

Mapping of borrow rate to currency type

Python¶

result = substrate.query(
    'Loans', 'BorrowRate', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

ExchangeRate¶

The internal exchange rate from the associated lend token to the underlying currency.

Python¶

result = substrate.query(
    'Loans', 'ExchangeRate', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

LastAccruedInterestTime¶

The timestamp of the last calculation of accrued interest

Python¶

result = substrate.query(
    'Loans', 'LastAccruedInterestTime', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u64'

Markets¶

Mapping of underlying currency id to its market

Python¶

result = substrate.query(
    'Loans', 'Markets', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

{
    'borrow_cap': 'u128',
    'close_factor': 'u32',
    'collateral_factor': 'u32',
    'lend_token_id': {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
            },
        ),
        'StableLpToken': 'u32',
        'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
    },
    'liquidate_incentive': 'u128',
    'liquidate_incentive_reserved_factor': 'u32',
    'liquidation_threshold': 'u32',
    'rate_model': {
        'Curve': {'base_rate': 'u128'},
        'Jump': {
            'base_rate': 'u128',
            'full_rate': 'u128',
            'jump_rate': 'u128',
            'jump_utilization': 'u32',
        },
    },
    'reserve_factor': 'u32',
    'state': ('Active', 'Pending', 'Supervision'),
    'supply_cap': 'u128',
}

MaxExchangeRate¶

The maximum allowed exchange rate for a market.

Python¶

result = substrate.query(
    'Loans', 'MaxExchangeRate', []
)

Return value¶

'u128'

MinExchangeRate¶

The minimum allowed exchange rate for a market. This is the starting rate when a market is first set up.

Python¶

result = substrate.query(
    'Loans', 'MinExchangeRate', []
)

Return value¶

'u128'

RewardAccrued¶

The incentive reward accrued but not yet transferred to each user.

Python¶

result = substrate.query(
    'Loans', 'RewardAccrued', ['AccountId']
)

Return value¶

'u128'

RewardBorrowSpeed¶

Mapping of underlying currency id to borrow reward speed

Python¶

result = substrate.query(
    'Loans', 'RewardBorrowSpeed', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

RewardBorrowState¶

The Reward market borrow state for each market

Python¶

result = substrate.query(
    'Loans', 'RewardBorrowState', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

{'block': 'u32', 'index': 'u128'}

RewardBorrowerIndex¶

The incentive reward index for each market for each borrower as of the last time they accrued Reward

Python¶

result = substrate.query(
    'Loans', 'RewardBorrowerIndex', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'AccountId',
]
)

Return value¶

'u128'

RewardSupplierIndex¶

The incentive reward index for each market for each supplier as of the last time they accrued Reward

Python¶

result = substrate.query(
    'Loans', 'RewardSupplierIndex', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
    'AccountId',
]
)

Return value¶

'u128'

RewardSupplySpeed¶

Mapping of underlying currency id to supply reward speed

Python¶

result = substrate.query(
    'Loans', 'RewardSupplySpeed', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

RewardSupplyState¶

The Reward market supply state for each market

Python¶

result = substrate.query(
    'Loans', 'RewardSupplyState', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

{'block': 'u32', 'index': 'u128'}

StorageVersion¶

Storage version of the pallet.

Python¶

result = substrate.query(
    'Loans', 'StorageVersion', []
)

Return value¶

('V0', )

SupplyRate¶

Mapping of supply rate to currency type

Python¶

result = substrate.query(
    'Loans', 'SupplyRate', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

TotalBorrows¶

Total amount of outstanding borrows of the underlying in this market CurrencyId -> Balance

Python¶

result = substrate.query(
    'Loans', 'TotalBorrows', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

TotalReserves¶

Total amount of reserves of the underlying held in this market CurrencyId -> Balance

Python¶

result = substrate.query(
    'Loans', 'TotalReserves', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u128'

UnderlyingAssetId¶

Mapping of lend_token id to underlying currency id lend_token id: voucher token id asset id: underlying token id

Python¶

result = substrate.query(
    'Loans', 'UnderlyingAssetId', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

{
    'ForeignAsset': 'u32',
    'LendToken': 'u32',
    'LpToken': (
        {
            'ForeignAsset': 'u32',
            'StableLpToken': 'u32',
            'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
        },
        {
            'ForeignAsset': 'u32',
            'StableLpToken': 'u32',
            'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
        },
    ),
    'StableLpToken': 'u32',
    'Token': ('DOT', 'IBTC', 'INTR', 'KSM', 'KBTC', 'KINT'),
}

UtilizationRatio¶

Borrow utilization ratio

Python¶

result = substrate.query(
    'Loans', 'UtilizationRatio', [
    {
        'ForeignAsset': 'u32',
        'LendToken': 'u32',
        'LpToken': (
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
            {
                'ForeignAsset': 'u32',
                'StableLpToken': 'u32',
                'Token': (
                    'DOT',
                    'IBTC',
                    'INTR',
                    'KSM',
                    'KBTC',
                    'KINT',
                ),
            },
        ),
        'StableLpToken': 'u32',
        'Token': (
            'DOT',
            'IBTC',
            'INTR',
            'KSM',
            'KBTC',
            'KINT',
        ),
    },
]
)

Return value¶

'u32'

Constants¶

PalletId¶

The loan's module id, used to derive the account that holds the liquidity in all markets.

Value¶

'0x6d6f642f6c6f616e'

Python¶

constant = substrate.get_constant('Loans', 'PalletId')

ReferenceAssetId¶

Reference currency for expressing asset prices. Example: USD, IBTC.

Value¶

{'Token': 'IBTC'}

Python¶

constant = substrate.get_constant('Loans', 'ReferenceAssetId')

RewardAssetId¶

Incentive reward asset id.

Value¶

{'Token': 'INTR'}

Python¶

constant = substrate.get_constant('Loans', 'RewardAssetId')

Errors¶

BorrowCapacityExceeded¶

Upper bound of borrowing is exceeded

DepositAllCollateralFailed¶

Locking collateral failed. The account has no free tokens.

DepositsAreNotCollateral¶

Deposits are not used as a collateral

InsufficientCash¶

Insufficient cash in the pool

InsufficientCollateral¶

Repay amount more than collateral amount

InsufficientDeposit¶

Insufficient deposit to redeem

InsufficientLiquidity¶

Insufficient liquidity to borrow more or disable collateral

InsufficientReserves¶

Insufficient reserves

InsufficientShortfall¶

Insufficient shortfall to repay

InvalidAmount¶

Amount cannot be zero

InvalidExchangeRate¶

The exchange rate should be a value between MinExchangeRate and MaxExchangeRate

InvalidFactor¶

The factor should be greater than 0% and less than 100%

InvalidLendTokenId¶

Invalid lend_token id

InvalidRateModelParam¶

Invalid rate model params

InvalidSupplyCap¶

The supply cap cannot be zero

LiquidatorIsBorrower¶

Liquidator is same as borrower

LockedTokensCannotBeRedeemed¶

Only free lend tokens are redeemable

MarketAlreadyActivated¶

Market already activated

MarketAlreadyExists¶

Market already exists

MarketDoesNotExist¶

Market does not exist

MarketNotActivated¶

Market not activated

NewMarketMustHavePendingState¶

New markets must have a pending state

SupplyCapacityExceeded¶

Upper bound of supplying is exceeded

TokensAlreadyLocked¶

Tokens already locked for a different purpose than borrow collateral

TooMuchRepay¶

Repay amount greater than allowed (either repays more than the existing debt, or exceeds the close factor)

WithdrawAllCollateralFailed¶

Unlocking collateral failed. The account has no reserved tokens.