Token extensions

Most Token 2022 extensions are supported by Light Token to add features through extra instructions to a token mint or token account.

How extensions work with Light Token

1. Create a Token-2022 mint with one or more extensions
2. Register an interface PDA to hold balances from that mint in Light Token accounts
3. Use the same Light Token APIs (transferInterface, wrap, unwrap) as any other token

Each extension adds specific state that’s generally initialized during mint or token account creation. When initializing either account, you can enable specific extensions simultaneously for different functionality. Most extensions can’t be added after an account is initialized.

Supported extensions

Extension	Restriction	Description
MetadataPointer	-	Points a mint to the account that stores its metadata.
TokenMetadata	-	Stores token name, symbol, and URI directly on the mint.
TransferFeeConfig	Fees must be zero	Withholds a percentage of each transfer as a fee.
TransferHook	program_id must be nil	Invokes a custom program on every transfer via CPI.
InterestBearingConfig	-	Displays a UI-adjusted balance that accrues interest over time.
DefaultAccountState	No compressed transfer	Sets the initial state (e.g., frozen) for newly created token accounts.
PermanentDelegate	No compressed transfer	Grants an authority unrestricted transfer and burn rights over all accounts for the mint.
MintCloseAuthority	No compressed transfer	Allows a designated authority to close a mint account.
GroupPointer	-	Points a mint to the account that stores group configuration.
GroupMemberPointer	-	Points a mint to the account that stores group member configuration.
TokenGroup	-	Stores group configuration directly on the mint (e.g., NFT collections).
TokenGroupMember	-	Stores group member configuration directly on the mint.
Pausable	No compressed transfer	Allows an authority to pause all minting, burning, and transfers.
ConfidentialTransferMint	Initialized but not enabled	Configures auditor keys for confidential (encrypted) transfers.
ConfidentialTransferFeeConfig	Fees must be zero	Encrypts withheld transfer fees under an auditor’s public key.
ConfidentialMintBurn	Initialized but not enabled	Allows minting and burning of tokens with encrypted amounts.

Not supported

The following Token-2022 extensions are not supported by Light Token: Scaled UI Amount, Non-Transferable Tokens, Memo Transfer, Immutable Owner, CPI Guard.

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