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A facet packages the text that shapes how an AI assistant behaves: domain-specific instructions (skills), specialized agent configurations (agents), and custom slash commands (commands). Facets can also reference MCP servers — code that gives the assistant new tool capabilities — without bundling the server code itself. facet is a package manager for facets — modular, versioned bundles of skills, agents, commands, and MCP server references that extend AI coding assistants.

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Quick Start

Facet Management

The facet CLI tool is used to install, update, and manage facets.

Find Facets

Facet.cafe is the canonical registry of facets.

Learn More

Learn about how facets are constructed, published, and secured.

Specification

The official facet specification reference.