# v1 SDK

Hats Protocol v1 Core and Subgraph SDKs. 

Check out the open source code [here](https://github.com/Hats-Protocol/sdk-v1-core).

{% content-ref url="v1-sdk/core" %}
[core](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core)
{% endcontent-ref %}

{% content-ref url="v1-sdk/subgraph" %}
[subgraph](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph)
{% endcontent-ref %}