> For the complete documentation index, see [llms.txt](https://docs.blockend.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockend.com/compass-api/api-reference/getting-started.md).

# Getting Started

### Base URL:

```
https://api2.blockend.com/v1/
```

All type definitions can be found [here](/compass-api/api-reference/type-definations.md)

### Core Transaction Flow <a href="#core-transaction-flow" id="core-transaction-flow"></a>

**1. Fetching quotes**

User flow begins with fetching quotes, which returns a list of quotes for the given input and output assets, along with the steps involved in the transaction. Quotes are by default sorted via best output and contains a scores object and tags to determine fastest/cheapest/best output routes.

{% content-ref url="/pages/XPUQxmIgNKUl7XmauUWB" %}
[Fetching Quotes](/compass-api/api-reference/fetching-quotes.md)
{% endcontent-ref %}

**2. Creating a transaction**

After fetching quotes, you can create a transaction using the selected quote by passing in the `routeId` of the quote.

{% content-ref url="/pages/k8ntX4gOMt4NWP7uHdLF" %}
[Create Transaction](/compass-api/api-reference/create-transaction.md)
{% endcontent-ref %}

**3. Getting transaction data to execute**

CommentCall this api with `routeId` and `stepId` of individual steps to get the transaction data to execute.

{% content-ref url="/pages/PyMbWnPLKHYMc2lVGRQx" %}
[Get Raw Transaction To Execute](/compass-api/api-reference/get-raw-transaction-to-execute.md)
{% endcontent-ref %}

**4. Check status of a transaction**

After user signs and submits the transaction on chain, check the status of the transaction by passing in the signature hash of the transaction.

{% content-ref url="/pages/rS87obNAN10ODquxuTI3" %}
[Check Transaction Status](/compass-api/api-reference/check-transaction-status.md)
{% endcontent-ref %}

**5. Using WebSockets for realtime updates (in active development)**

You can also check the status of a transaction using WebSockets. This can provide faster and almost realtime updates on the status of a transaction.

> Note: this feature is in active development and will be generally available soon. Contact us to get access to this feature.

**6. Single API for simple flow execution (in active development)**\
\
A simple 1 step endpoint is being worked on where a request directly gives you a single quote in response along with array of transaction data to execute to complete the transaction

> Note: this feature is in active development and will be generally available soon. Contact us to get access to this feature.

### Meta Endpoints <a href="#meta-endpoints-1" id="meta-endpoints-1"></a>

#### **​**[**Tokens**](/compass-api/api-reference/get-supported-chains-and-tokens.md)**​**

Get a list of supported tokens and their details.

```
curl -X GET "https://api2.blockend.com/v1/tokens"
```

#### **​**[**Chains**](/compass-api/supported-chains.md)**​**

Get a list of supported chains and their details.

```
curl -X GET "https://api2.blockend.com/v1/chains"
```


---

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