# Arken Swap Engine API

API Endpoint: `https://public-api.arken.finance`

{% hint style="info" %}
Please refer to [Arken API](/for-developers/arken-api.md) for getting API tokens
{% endhint %}

Using Arken Finance Swap Engine API, you can find the best route to exchange assets and make the swap.\
\
Here are the step-by-step instructions on how to use Arken Swap Engine API:

1. Find the addresses of the tokens you want to swap. For example, swapping WETH -> USDT
   1. WETH: `0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`
   2. USDT: `0xdac17f958d2ee523a2206206994597c13d831ec7`
2. Check for allowance of Arken Approve contract to spend source asset using `/approve/allowance`
3. If necessary, give approval for Arken Approve contract to spend the source token using `/approve/transaction`
4. Monitor the best exchange route using `/swap/quote`
5. When you are ready to swap, use `/swap/swap` to generate the call data to perform the swap

### Chains

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/chains" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

### Health Check

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/healthcheck" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

### Approve

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/approve/spender" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/approve/transaction" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/approve/allowance" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

### Info

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/liquidity-sources" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

### Swap

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/swap/quote" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}

{% openapi src="<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>" path="/swap-engine/v1/{chainID}/swap/swap" method="get" %}
<https://api.arken.finance/docs/public/swap-engine-api.openapi.json>
{% endopenapi %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.arken.ag/for-developers/arken-api/arken-swap-engine-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.