Swaps, perpetuals, and prediction markets.

01Swaps

A swap exchanges one held asset for another at the best available route across the networks Summo supports.

Summo verifies a curated set of tokens for identity and safety. Tokens outside that set can also be found and swapped; they have not been reviewed by Summo.

• Routing. Quotes are compared across more than one liquidity source, and the better route is used. Where available, moving the same stablecoin between networks uses a native transfer rather than a swap; its cost is shown in the quote before confirming.
• Slippage protection. A maximum price movement is set before confirming and enforced on-chain by the transaction itself. A swap that would settle outside that tolerance reverts in full: nothing moves, and the assets remain in the account.
• Cross-chain swaps. Swaps between an EVM network and Solana are signed once, on the origin network; the destination leg settles separately once the origin leg confirms, so a cross-chain swap is not instantaneous. In the rare event that the destination leg fails, recovery is handled through the routing partner.
• Fees. Summo’s fee, and any fee added by the liquidity source on a given route, are itemized in the quote before confirmation.

02Perpetuals

Perpetual futures on Summo are executed on a partner derivatives exchange. Trading uses a dedicated perpetuals balance, funded from the account and withdrawable back to it.

Positions are one-way: an order in the direction opposite an open position reduces or closes that position rather than opening a separate, hedged position.

Leverage is set per market:

Both cross and isolated margin are available; some markets are isolated-only. An isolated position can be topped up with additional margin without changing its size.

• Funding. Positions are subject to periodic funding payments, netted into realized profit and loss and shown in the position’s breakdown during and after the trade.
• Liquidation. A liquidation price is calculated and shown on the order confirmation before a position is opened. A liquidation is reported by push notification and in the activity feed. For a cross-margin position, the price shown is a per-position estimate, since liquidation depends on the margin health of the whole account.
• Markets. Listed markets are crypto-only: major assets, DeFi tokens, layer-1 and layer-2 tokens, memecoins, and AI and gaming tokens.
• Availability. Opening a new position may be restricted in certain jurisdictions, to comply with applicable laws and regulations.
• Fees. Each order carries the exchange’s trading fee and a Summo fee. The total is shown on the order confirmation before an order is placed. Opening a first position also involves a small, one-time on-chain setup step.

Leverage magnifies both gains and losses relative to the margin posted. A position that moves against the account beyond its margin can be liquidated, closing the position and forfeiting the margin posted to it.

03Prediction markets

Prediction markets on Summo are sourced from Polymarket, a third-party prediction market on the Polygon network, and resolve there under Polymarket’s resolution process. Each market states its own resolution rules, shown before a position is taken. Summo is a verified Polymarket builder.

Every position works the same way:

• Outcome shares. A position is a share in an outcome, Yes or No, bought at a price between $0 and $1. A winning share redeems for $1; a losing share redeems for nothing. The price paid is the most a position can lose, and positions are not leveraged.
• Order type. Orders are fill-or-kill: an order fills completely at the quoted price or is cancelled. The minimum position size is $1.
• Custody. A position is funded from the account holder’s own wallet, and every order is signed on their device. Positions and payouts are on-chain tokens held in the account holder’s wallet; Summo never holds the funds.
• Availability. Prediction markets are not offered in many jurisdictions. Where they are not permitted, opening a position is refused, to comply with applicable laws and regulations. Closing a position or collecting a payout is not restricted by location. Prediction markets are for account holders aged 18 or over.
• Fees. A Summo service fee applies to prediction-market trades and is itemized before a trade is confirmed.

Every trade is signed and checked the same way as any other transaction; see the co-signer. For the network fee on the underlying transaction, see fees and gas.