hopper-token-2022 0.2.0

Hopper-owned Token-2022 builder and screening surface. Thin, no_std instruction builders over Hopper Runtime.
Documentation

hopper-token-2022

Hopper-owned Token-2022 builders plus extension screening helpers. The extension-aware companion to hopper-token.

Crates.io Docs.rs

Part of the Hopper framework.

What this crate ships

  • Instruction builders - Transfer, MintTo, Burn, CloseAccount, Approve, Revoke, InitializeAccount retargeted at the Token-2022 program.
  • Extension screening - check_safe_token_2022_mint, check_no_transfer_fee, check_no_permanent_delegate, check_no_confidential_transfer, check_no_transfer_hook, check_transferable. The blanket "this mint has none of the exotic extensions my AMM math assumes" gate.
  • Extension readers - read_transfer_fee_config, read_transfer_hook, check_transfer_hook_program. Zero-copy TLV scanners over the mint or token-account extension area.

When to reach for this

Anything that accepts user-supplied Token-2022 mints. The extension family adds attack surface that legacy SPL Token doesn't have. Hopper's screeners let a DEX or lending market reject mints with transfer hooks, transfer fees, permanent delegates, or confidential transfers in one line.

use hopper::prelude::*;

let mint_data = mint_account.try_borrow()?;
hopper::hopper_token_2022::check_safe_token_2022_mint(&mint_data)?;

See examples/hopper-token-2022-transfer-hook for an end-to-end transfer-hook validation pattern.

Docs: https://docs.rs/crate/hopper-token-2022/0.2.0

Support: solanadevdao.sol / F42ZovBoRJZU4av5MiESVwJWnEx8ZQVFkc1RM29zMxNT.

License: Apache-2.0.