# SDK & Libraries

DecisionRules provides a set of libraries, add-ins, and server integrations that let you embed business rule execution directly into your applications and tools — without building API calls from scratch.

This section covers everything you need to connect your application to DecisionRules, from official language libraries through spreadsheet tooling to AI assistant integrations.

{% hint style="info" %}
All tools described here are used to **call DecisionRules from your application** — your code is the one making the connection. If you are looking for ways to connect external services into a flow, see [Flow Integrations](/doc/integrations/flow-integrations.md).
{% endhint %}


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