Swap Tokens

Outline:

• Quote first with POST /api/swap/quote — slippage, fee preview, expected out.

• Execute with POST /api/swap/execute — runs through Router, ShredPay sponsors gas.

• Worked example: 100 USDC → ETH on Base.

• Handling slippage failures and re-quoting.

• Why this is Base-only today (Router availability).

See Gas Model for the sponsorship rules.