SaturnSwap Market Swap

Guide users through market buy/sell swaps on SaturnSwap DEX.

Flow

1. Find the pool — look up by ticker or policy ID
2. Check the order book — show current best ask/bid and spread
3. Preview the swap — calculate expected output at current price
4. Build the transaction — call createMarketSwap with pool ID and amount
5. Hand off to operator — the operator skill handles signing and submission

Scripts

Preview Swap

node scripts/preview-swap.js --pool <pool-uuid> --amount <display-units> [--side buy|sell]

Fetches current price and estimates output. Does NOT create a transaction.

Create Swap Transaction

node scripts/create-swap.js --address <bech32> --pool <pool-uuid> --amount <display-units> [--slippage 3]

Calls the API to build an unsigned transaction. Returns transactionId and hexTransaction.

Safety Rules

• Always show the user: pool pair, amount in, estimated amount out, slippage, and any fees
• Require explicit confirmation before calling create-swap
• Display units only — 5 ADA means tokenAmountSell: 5, never 5000000
• Slippage defaults to 3% — warn if user sets >10%
• Check error field even on HTTP 200 responses

Key Concepts

• Market swaps execute immediately against the order book
• tokenAmountSell is the input amount (what you're giving up)
• Selling ADA → buying tokens (market buy of the token)
• Selling tokens → getting ADA back (market sell of the token)
• After creation, the hex must be signed locally and submitted via the operator skill