> 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/skill-library.md).

# Skill Library

A **skill** is a single action an agent can take. This section documents every first-party skill the platform ships — what it does, a worked example, its configuration, its output, and how it fails.

For what skills *are* and how the planner chooses between them, see [Skills & Tools](/core-concepts/skills-and-tools.md). To attach one to an agent, see [Adding a Skill to the Agent](/agent-builder/build/adding-a-skill-to-the-agent.md).

## By category

* [**Logic & Data Integration**](/platform-resources/skill-library/logic-and-data-integration.md) — reach external systems and reshape data between steps.
* [**AI Skills**](/platform-resources/skill-library/ai-skills.md) — language, extraction, and content work.
* [**Document Skills**](/platform-resources/skill-library/document-skills.md) — bring files in, move them around, and clean them up.
* [**Data Skills (RAG)**](/platform-resources/skill-library/data-skills-rag.md) — search and answer from your own knowledge.

## Reading these pages

Each page follows the same spine: **purpose → how it works → worked example → configuration → output → errors**. Configuration and output tables are the contract; the worked example shows one real use, not the only one.

Where a skill supports it, a **Testing in isolation** section gives the endpoint for running that skill alone — useful for confirming a configuration before wiring it into anything.

{% hint style="info" %}
**Five skills are missing their reference layer.** [Intent Classification](/platform-resources/skill-library/ai-skills/intent-classification.md), [Prompt](/platform-resources/skill-library/ai-skills/prompt.md), [RAG Query](/platform-resources/skill-library/data-skills-rag/rag-query.md), [Ruleset](/platform-resources/skill-library/data-skills-rag/ruleset.md) and [Vector Search](/platform-resources/skill-library/data-skills-rag/vector-search.md) document their purpose and builder configuration, but their formal schemas and error codes are not yet available. Those pages say so at the top.
{% endhint %}


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