Jupiter vs Uniswap vs 1inch

Seashail automatically selects the best swap provider based on the chain you're trading on. This comparison explains the differences and when you might want to explicitly choose a provider.

Feature Comparison

Feature	Jupiter	Uniswap	1inch
Chain	Solana	EVM chains	EVM chains
Auto-selected for	Solana swaps	EVM swaps (default)	EVM swaps (alternative)
Provider param	`"jupiter"`	`"uniswap"`	`"1inch"`
Route aggregation	Multi-hop via Jupiter API	Uniswap router	1inch aggregation
Slippage control	`slippage_bps`	`slippage_bps`	`slippage_bps`
Token format	SPL mint address	ERC-20 contract address	ERC-20 contract address

When to Use Auto (Recommended)

The provider: "auto" parameter (default) automatically selects the best provider for your chain:

Solana swaps → Jupiter
EVM swaps → Uniswap (default)

Most users should use provider: "auto" and let Seashail handle routing.

When to Use Explicit Provider Selection

You might explicitly choose a provider when:

You want to use 1inch for EVM swaps (requires 1inch API configuration)
You're comparing routes across providers
You have a specific requirement for a particular aggregator

Usage Examples

Auto-selected (Recommended)

Swap on Solana (auto-selects Jupiter):

{
  "chain": "solana",
  "token_in": "native",
  "token_out": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "amount_in": "1",
  "amount_units": "ui",
  "provider": "auto"
}

Swap on Base (auto-selects Uniswap):

{
  "chain": "base",
  "token_in": "native",
  "token_out": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "amount_in": "0.1",
  "amount_units": "ui",
  "provider": "auto"
}

Explicit Provider Selection

Use Jupiter explicitly on Solana:

{
  "chain": "solana",
  "token_in": "native",
  "token_out": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "amount_in": "1",
  "amount_units": "ui",
  "provider": "jupiter"
}

Use Uniswap explicitly on Ethereum:

{
  "chain": "ethereum",
  "token_in": "native",
  "token_out": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "amount_in": "0.1",
  "amount_units": "ui",
  "provider": "uniswap"
}

Use 1inch explicitly on Arbitrum (requires 1inch configuration):

{
  "chain": "arbitrum",
  "token_in": "native",
  "token_out": "0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8",
  "amount_in": "0.1",
  "amount_units": "ui",
  "provider": "1inch"
}