GitHub Publishes Guide on Customizing Copilot for Repository-Specific Workflows

GitHub published a tutorial on October 12, 2026, explaining how developers can configure the Copilot AI assistant to follow project-specific conventions and access external tools. The guide, authored by Senior Developer Advocate Christopher Harrison, describes four customization methods intended to reduce repetitive explanations of codebase standards. According to the GitHub blog post, the company documented repository custom instructions, agent skills, custom agents, and Model Context Protocol (MCP) servers as ways to tailor Copilot behavior. Repository custom instructions use a .github/copilot-instructions.md file to define architecture patterns, naming conventions, and testing expectations that apply across a codebase.

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