tokenised_fund.spiko.vault

Documentation for eth_defi.tokenised_fund.spiko.vault Python module.

Spiko USTBL tokenised fund adapter.

USTBL is a permissioned ERC-20 share in Spiko’s U.S. Treasury-bill money market fund. It is not ERC-4626. The verified issuer Oracle publishes NAV per share using the Chainlink AggregatorV3 interface, allowing safe read-only tracking through eth_defi.vault.base.VaultBase.

See https://tech.spiko.io/posts/spiko-smart-contracts/ and https://github.com/spiko-tech/contracts/blob/main/contracts/oracle/Oracle.sol.

Module Attributes

`SPIKO_PERMISSIONED_FLOW_REASON`	Public flows must not be advertised for Spiko's permissioned lifecycle.
`USTBL_MANAGEMENT_FEE`	USTBL's published annual management fee.

Functions

export_spiko_usd_denomination(chain_id)

Export USTBL's non-transferable USD accounting denomination.

Classes

`SpikoVault`	Read-only Ethereum adapter for Spiko USTBL.
`SpikoVaultInfo`	USTBL metadata exported to vault scan consumers.

SPIKO_PERMISSIONED_FLOW_REASON = 'Spiko USTBL subscriptions, transfers and redemptions require eligibility checks and issuer-operated daily servicing': Public flows must not be advertised for Spiko’s permissioned lifecycle.

USTBL_MANAGEMENT_FEE: float = 0.0025: USTBL’s published annual management fee. The reported NAV is net of this fee. https://www.spiko.io/use-cases/web3

class SpikoVaultInfo

Bases: eth_defi.vault.base.VaultInfo

USTBL metadata exported to vault scan consumers.

__init__(*args, **kwargs)

__new__(**kwargs)

clear(): Remove all items from the dict.

copy(): Return a shallow copy of the dict.

fromkeys(value=None, /): Create a new dictionary with keys from iterable and values set to value.

get(key, default=None, /): Return the value for key if key is in the dictionary, else default.

items(): Return a set-like object providing a view on the dict’s items.

keys(): Return a set-like object providing a view on the dict’s keys.

pop(k[, d]) → v, remove specified key and return the corresponding value.: If the key is not found, return the default if given; otherwise, raise a KeyError.

popitem()

Remove and return a (key, value) pair as a 2-tuple.

Pairs are returned in LIFO (last-in, first-out) order. Raises KeyError if the dict is empty.

setdefault(key, default=None, /)

Insert key with a value of default if key is not in the dictionary.

Return the value for key if key is in the dictionary, else default.

update([E, ]**F) → None. Update D from mapping/iterable E and F.: If E is present and has a .keys() method, then does: for k in E.keys(): D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]

values(): Return an object providing a view on the dict’s values.

export_spiko_usd_denomination(chain_id)

Export USTBL’s non-transferable USD accounting denomination.

Parameters: chain_id (int) – EVM chain id of the USTBL deployment.
Returns: Token-like USD metadata without an ERC-20 address.
Return type: dict[str, object]

class SpikoVault

Bases: eth_defi.vault.base.VaultBase

Read-only Ethereum adapter for Spiko USTBL.

The adapter calculates NAV from ERC-20 supply and the official issuer Oracle. It cannot perform investor dealing: transfers and servicing are controlled by Spiko’s permission manager and redemption workflow.

Create a verified USTBL adapter.

Parameters

web3 – Ethereum Web3 connection.
spec – Ethereum chain and USTBL token identifier.
token_cache – Optional ERC-20 metadata cache.
features – Classification flags supplied by the shared factory.
default_block_identifier – Accepted for factory compatibility.
require_denomination_token – Accepted for VaultBase compatibility.

Raises

ValueError – If the requested product is not Ethereum USTBL.

__init__(web3, spec, token_cache=None, features=None, default_block_identifier=None, require_denomination_token=False)

Create a verified USTBL adapter.

Parameters

web3 (web3.main.Web3) – Ethereum Web3 connection.
spec (eth_defi.vault.base.VaultSpec) – Ethereum chain and USTBL token identifier.
token_cache (Optional[dict]) – Optional ERC-20 metadata cache.
features (Optional[set[eth_defi.erc_4626.core.ERC4626Feature]]) – Classification flags supplied by the shared factory.
default_block_identifier (Optional[Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]]) – Accepted for factory compatibility.
require_denomination_token (bool) – Accepted for VaultBase compatibility.

Raises

ValueError – If the requested product is not Ethereum USTBL.

first_seen_at_block: Optional[int]

Block number hint when this vault was deployed.

Must be set externally, as because of shitty Ethereum RPC we cannot query this. Allows us to avoid unnecessary work when scanning historical price data.

property chain_id: int

Return the USTBL deployment chain id.

Returns: Ethereum mainnet chain id.

property address: eth_typing.evm.HexAddress

Return the USTBL token address.

Returns: Checksummed Ethereum address.

property vault_address: eth_typing.evm.HexAddress

Return the shared scanner vault identifier.

Returns: USTBL token address.

property price_oracle_contract: web3.contract.contract.Contract

Return Spiko’s verified Chainlink-compatible NAV oracle.

Returns: Oracle contract instance.

property oracle_decimals: int

Read the NAV oracle decimal scale.

Returns: Number of oracle decimal places.

property name: str

Return the on-chain share token name.

Returns: ERC-20 token name.

property symbol: str

Return the on-chain share token symbol.

Returns: ERC-20 token symbol.

property description: str

Return Spiko’s public fund description.

Returns: Concise fund strategy description.

property short_description: str

Return a concise public listing description.

Returns: USTBL eligibility-aware product summary.

property manager_name: str

Return the protocol-operated curator identity.

Returns: Spiko.

fetch_share_token_address(block_identifier='latest')

Return USTBL’s share token address.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Accepted for shared scanner compatibility.
Returns: USTBL token address.
Return type: eth_typing.evm.HexAddress

fetch_share_token()

Fetch USTBL ERC-20 details.

Returns: USTBL token metadata and conversion methods.
Return type: eth_defi.token.TokenDetails

fetch_denomination_token_address()

Return no surrogate ERC-20 denomination token.

Spiko servicing supports eligibility-checked fiat and stablecoin settlement choices, but USTBL does not expose an ERC-4626 asset token. A surrogate would wrongly advertise a public dealing route.

Returns: Always None.
Return type: Optional[eth_typing.evm.HexAddress]

fetch_denomination_token()

Return no on-chain denomination-token metadata.

Returns: Always None because no single public ERC-20 asset exists.
Return type: Optional[eth_defi.token.TokenDetails]

convert_raw_share_price(raw_price)

Convert oracle units to USD NAV per USTBL token.

Parameters: raw_price (int) – Raw Chainlink-compatible oracle answer.
Returns: Human-readable USD NAV/share.
Return type: decimal.Decimal

fetch_share_price(block_identifier='latest')

Read the official USTBL NAV/share.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Ethereum block tag or historical block number.
Returns: USD NAV per USTBL.
Raises: ValueError – If the oracle returns no valid NAV observation.
Return type: decimal.Decimal

fetch_total_supply(block_identifier='latest')

Read the outstanding USTBL supply.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Ethereum block tag or historical block number.
Returns: Human-readable USTBL supply.
Return type: decimal.Decimal

fetch_total_assets(block_identifier='latest')

Calculate estimated fund NAV from supply and issuer NAV/share.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Ethereum block tag or historical block number.
Returns: USD estimated fund net asset value.
Return type: decimal.Decimal

fetch_nav(block_identifier='latest')

Read USTBL total NAV.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Ethereum block tag or historical block number.
Returns: USD estimated fund net asset value.
Return type: decimal.Decimal

fetch_info()

Export verified on-chain USTBL integration metadata.

Returns: Token, oracle and price-source identifiers.
Return type: eth_defi.tokenised_fund.spiko.vault.SpikoVaultInfo

fetch_scan_record_extra_data()

Expose valuation and restricted-flow diagnostics.

Returns: Data recorded with USTBL scan results.
Return type: dict[str, object]

fetch_portfolio(universe, block_identifier=None)

Return no directly observable underlying portfolio.

Parameters

universe (eth_defi.vault.base.TradingUniverse) – Ignored because USTBL assets are off-chain.
block_identifier (Optional[Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]]) – Ignored because holdings are not on-chain.

Returns

Empty spot portfolio.

Return type

eth_defi.vault.base.VaultPortfolio

has_block_range_event_support()

Report unsupported generic flow-event accounting.

Returns: False because servicing is issuer-operated.
Return type: bool

has_deposit_distribution_to_all_positions()

Report unavailable on-chain portfolio distribution.

Returns: False.
Return type: bool

get_flow_manager()

Reject unsupported generic flow accounting.

Raises: NotImplementedError – Always, as Spiko servicing is bespoke.
Return type: eth_defi.vault.base.VaultFlowManager

get_deposit_manager()

Reject public generic transaction support.

Raises: NotImplementedError – Always, due to eligibility and daily servicing.
Return type: eth_defi.vault.deposit_redeem.VaultDepositManager

fetch_deposit_closed_reason()

Explain unavailable generic subscriptions.

Returns: Eligibility and issuer-servicing explanation.
Return type: str

fetch_redemption_closed_reason()

Explain unavailable generic redemptions.

Returns: Eligibility and issuer-servicing explanation.
Return type: str

get_historical_reader(stateful)

Construct the supply and NAV historical reader.

Parameters: stateful (bool) – Whether to retain shared reader state.
Returns: USTBL historical reader.
Return type: eth_defi.vault.base.VaultHistoricalReader

get_management_fee(block_identifier)

Return USTBL’s published annual management fee.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Accepted for shared fee API compatibility.
Returns: Annual management fee as a fraction.
Return type: Optional[float]

get_performance_fee(block_identifier)

Return no separately published USTBL performance fee.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Accepted for shared fee API compatibility.
Returns: None.
Return type: Optional[float]

get_fee_data()

Return published USTBL fee metadata.

Returns: Management fee with no inferred dealing fees.
Return type: eth_defi.vault.fee.FeeData

get_link(referral=None)

Return Spiko’s USTBL product page.

Parameters: referral (Optional[str]) – Ignored because Spiko does not provide referral URLs.
Returns: Official Spiko product page.
Return type: str

property denomination_token: Optional[eth_defi.token.TokenDetails]

Get the token which denominates the vault valuation

Used in deposits and redemptions
Used in NAV calculation
Used in profit benchmarks
Usually USDC

Returns

Token wrapper instance.

Maybe None for broken vaults like https://arbiscan.io/address/0x9d0fbc852deccb7dcdd6cb224fa7561efda74411#code

Note

None results are not cached — the next access will retry the on-chain call. This avoids permanently caching a transient RPC failure.

property deposit_manager: eth_defi.vault.deposit_redeem.VaultDepositManager: Deposit manager assocaited with this vault

fetch_available_liquidity(block_identifier='latest')

Get the amount of denomination token available for immediate withdrawal.

Only applicable to lending protocol vaults (IPOR, Euler, Morpho, Gearbox, etc.). Non-lending protocols should leave this method unimplemented.

Note: maxRedeem(address(0)) does NOT work as a proxy for available liquidity because it requires a specific address that has already deposited shares. For address(0), balanceOf is always 0, so maxRedeem returns 0 regardless of actual liquidity.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Block to query. Defaults to “latest”.
Raises: NotImplementedError – For non-lending protocol vaults.
Returns: Amount in denomination token units (human-readable Decimal).
Return type: Optional[decimal.Decimal]

fetch_deposit_next_open()

Get when deposits will next be open.

For epoch-based vaults (Ostium, D2), return calculated window open time
For non-epoch vaults (Plutus, IPOR, Morpho), return None
Override in protocol-specific subclasses

Returns

Naive UTC datetime when deposits will next be available, or None if:

Deposits are currently open
Timing is unpredictable (manually controlled)
Protocol does not support timing information

Return type

Optional[datetime.datetime]

fetch_redemption_next_open()

Get when withdrawals/redemptions will next be open.

For epoch-based vaults (Ostium, D2), return calculated window open time
For non-epoch vaults (Plutus, IPOR, Morpho), return None
Override in protocol-specific subclasses

Returns

Naive UTC datetime when withdrawals will next be available, or None if:

Withdrawals are currently open
Timing is unpredictable (manually controlled)
Protocol does not support timing information

Return type

Optional[datetime.datetime]

fetch_utilisation_percent(block_identifier='latest')

Get the percentage of assets currently lent out.

Only applicable to lending protocol vaults (IPOR, Euler, Morpho, Gearbox, etc.). Non-lending protocols should leave this method unimplemented.

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) – Block to query. Defaults to “latest”.
Raises: NotImplementedError – For non-lending protocol vaults.
Returns: Utilisation as float between 0.0 and 1.0 (0% to 100%).
Return type: Optional[float]

property flow_manager: eth_defi.vault.base.VaultFlowManager: Flow manager associated with this vault

get_deposit_fee(block_identifier)

Deposit fee is set to zero by default as vaults usually do not have deposit fees.

Internal: Use get_fee_data().

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) –
Return type: Optional[float]

get_deposit_manager_capability()

Return static public transaction-adapter support, if any.

This method deliberately does not attempt to construct a manager or query live pause, cap, epoch, balance, allow-list, or liquidity state. Adapters opt in only after their complete deposit and redemption lifecycles have focused coverage. None is therefore the safe default for unknown and protocol-specific vaults.

Returns: Adapter-specific capability object, or None when unsupported.
Return type: Optional[eth_defi.vault.deposit_redeem.VaultDepositManagerCapability]

get_estimated_lock_up()

What is the estimated lock-up period for this vault.

Returns: None if not know
Return type: Optional[datetime.timedelta]

get_fee_mode()

Get how this vault accounts its fees.

Return type: Optional[eth_defi.vault.fee.VaultFeeMode]

get_flags()

Get various vault state flags from the smart contract.

Override to add status flags
Also add flags from our manual flag list in eth_defi.vault.flag

Returns

Flag set.

Do not modify in place.

Return type

set[eth_defi.vault.flag.VaultFlag]

get_notes()

Get a human readable message if we know somethign special is going on with this vault.

Return type: Optional[str]

get_protocol_name()

Return the name of the vault protocol.

Return type: str

get_risk()

Get risk profile of this vault.

Return type: Optional[eth_defi.vault.risk.VaultTechnicalRisk]

get_withdraw_fee(block_identifier)

Withdraw fee is set to zero by default as vaults usually do not have withdraw fees.

Internal: Use get_fee_data().

Parameters: block_identifier (Union[Literal['latest', 'earliest', 'pending', 'safe', 'finalized'], eth_typing.evm.BlockNumber, eth_typing.evm.Hash32, eth_typing.encoding.HexStr, int]) –
Return type: float

has_custom_fees()

Does this vault have fees outside the shared fee model.

Custom fees cause risk in vault comparison because the shared management/performance/deposit/withdraw fee fields cannot describe the full fee structure.

Do not return True merely because a vault implements custom accessors for ordinary management, performance, deposit, or withdraw fees. Return True only when some vault fee cannot be reflected in those standard fields as a fee-like value.

Returns: True if the vault has fees outside the shared fee model.
Return type: bool

property info: eth_defi.vault.base.VaultInfo

Get info dictionary related to this vault deployment.

Get cached data on the various vault parameters

Returns: Vault protocol specific information dictionary

property share_token: eth_defi.token.TokenDetails

ERC-20 that presents vault shares.

User gets shares on deposit and burns them on redemption