> For the complete documentation index, see [llms.txt](https://docs.uptiq.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.uptiq.ai/platform-resources/the-skill-development-sdk.md).

# The Skill Development SDK

Creating your own custom nodes.

The Skill Development SDK empowers you to rapidly create and integrate proprietary capabilities into the Qore Skill Library.

This SDK provides a robust framework for wrapping custom business logic, connecting to legacy internal APIs, and developing unique workflow nodes.

By using the SDK, you ensure your custom skills are compliant with the Model Context Protocol (MCP) standards and instantly usable by any agent across the platform, maximizing reuse and accelerating solution deployment.

### Which SDK is this?

Four different things in Qore are called an SDK. They are not variants of each other.

| SDK                                      | What it is for                                                                      | Runs in          |
| ---------------------------------------- | ----------------------------------------------------------------------------------- | ---------------- |
| **Widgets SDK** (`@uptiqai/widgets-sdk`) | Dropping a prebuilt chat interface into your web app                                | Browser          |
| **Headless Agent JS SDK**                | Building your own chat UI against an agent, with sockets and events handled for you | Browser          |
| **Agent Development SDK**                | Defining agent behaviour in code rather than in the builder                         | Your own service |
| **Skill Development SDK**                | Wrapping your own business logic as a skill any agent can use                       | Your own service |

The first two are about *talking to* an agent that already exists. The last two are about *building* what the agent is and what it can do. If you want to call an agent from your backend and you are not extending the platform, you want neither.

{% hint style="danger" %}
**This page needs its reference material before it ships.** Package name and registry, install command, the entry point and its signature, a minimal working example, and the versioning rule against executor versions — the same set the Widgets SDK already documents on [Integrate Agent](/console/agent-builder/deploy/agent-integration.md). Written as a visible hint rather than a comment, which this repo strips on GitBook round-trip.
{% endhint %}


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