Domain 3Skills, Plugins & Connectors
Built-in Agent Skills
TL;DR
Pre-installed capabilities that Claude has out of the box — including reading, writing, and manipulating Excel spreadsheets, Word documents, PowerPoint presentations, and PDFs.
Definition
Pre-installed capabilities that Claude has out of the box — including reading, writing, and manipulating Excel spreadsheets, Word documents, PowerPoint presentations, and PDFs. These require no plugin installation or MCP server configuration. They run locally within the sandboxed environment.
Exam Context
A trap answer may claim you need a plugin to process spreadsheets in Cowork. You do not. Excel and CSV processing is a built-in Agent Skill requiring no installation.