fn vault(env: soroban_sdk::Env) -> soroban_sdk::AddressUpgrade the contract WASM. Only callable by admin.
fn upgrade(env: soroban_sdk::Env, new_wasm_hash: soroban_sdk::BytesN<32>)Returns price of sXLM in XLM (scaled by 1e7).
fn get_price(env: soroban_sdk::Env) -> i128Point the pool at the vault, once. Only needed to migrate a pool deployed before the seed-ratio check existed.
fn set_vault(env: soroban_sdk::Env, vault: soroban_sdk::Address)Initialize the LP pool.
fn initialize(
env: soroban_sdk::Env,
admin: soroban_sdk::Address,
sxlm_token: soroban_sdk::Address,
native_token: soroban_sdk::Address,
fee_bps: u32,
vault: soroban_sdk::Address,
)Returns (reserve_xlm, reserve_sxlm).
fn get_reserves(env: soroban_sdk::Env) -> (i128, i128)Add liquidity to the pool. Returns LP tokens minted. Only transfers the proportional amounts needed; excess stays with the user.
fn add_liquidity(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
xlm_amount: i128,
sxlm_amount: i128,
) -> i128Bump instance TTL — can be called by anyone to keep contract alive.
fn bump_instance(env: soroban_sdk::Env)fn get_lp_balance(env: soroban_sdk::Env, user: soroban_sdk::Address) -> i128fn total_lp_supply(env: soroban_sdk::Env) -> i128Returns protocol fee in basis points.
fn protocol_fee_bps(env: soroban_sdk::Env) -> i128Remove liquidity from the pool. Returns (xlm_out, sxlm_out).
fn remove_liquidity(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
lp_amount: i128,
) -> (i128, i128)Swap sXLM for XLM. Returns XLM received. min_out provides slippage protection.
fn swap_sxlm_to_xlm(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
sxlm_amount: i128,
min_out: i128,
) -> i128Swap XLM for sXLM. Returns sXLM received. min_out provides slippage protection.
fn swap_xlm_to_sxlm(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
xlm_amount: i128,
min_out: i128,
) -> i128Set protocol fee in basis points (portion of LP fee taken for protocol).
fn set_protocol_fee_bps(env: soroban_sdk::Env, bps: u32)Returns accrued protocol fees in XLM stroops.
fn accrued_protocol_fees(env: soroban_sdk::Env) -> i128Collect accrued protocol fees. Admin-only. Transfers XLM to admin and resets counter. Sweep accrued protocol fees.
The vault's share is transferred to it directly — the vault derives its assets from its own balance, so XLM arriving raises the exchange rate for every sXLM holder without a call. The remainder goes to the admin as protocol revenue.
Callable by anyone: it only moves fees to their two fixed destinations.
fn collect_protocol_fees(env: soroban_sdk::Env) -> i128