> ## Documentation Index
> Fetch the complete documentation index at: https://docs.soroswap.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# SoroswapAdapter

> The adapter that lets the aggregator route a trade through the Soroswap AMM router.

`SoroswapAggregatorAdapter` is the adapter for the Soroswap AMM itself. It implements
[`AdapterTrait`](/aggregator/technical-reference/contracts/adapter-trait) and forwards
each swap to the [SoroswapRouter](/amm/technical-reference/contracts/soroswap-router).

Source:
[`contracts/adapters/soroswap`](https://github.com/soroswap/aggregator/tree/main/contracts/adapters/soroswap).

## What it does

The adapter stores two things at initialization: a `protocol_id` string and the
`protocol_address` of the protocol it fronts, which for this adapter is the Soroswap
router.

```rust theme={null}
fn initialize(
    e: Env,
    protocol_id: String,
    protocol_address: Address,
) -> Result<(), AdapterError>;
```

Calling `initialize` twice fails with `AlreadyInitialized`. Calling any other function
before it fails with `NotInitialized`.

From then on, `swap_exact_tokens_for_tokens` and `swap_tokens_for_exact_tokens` translate
the aggregator's call into the router's equivalent and return the per-step amounts. This
adapter needs no protocol-specific extras, so it ignores the trait's optional `bytes`
parameter, which exists for protocols like Aqua that require pool hashes.

## Sibling adapters

The same trait is implemented for Phoenix, Aqua and Comet, each in its own crate under
[`contracts/adapters`](https://github.com/soroswap/aggregator/tree/main/contracts/adapters).
Because they share the interface, the aggregator treats all four identically and adding a
protocol means writing a fifth adapter rather than changing the aggregator.