GitHub
2025-11-12
GitHub added support for agent-specific custom instructions for Copilot code review and the Copilot coding agent by introducing an excludeAgent property in .instructions.md files, letting you control when particular instructions apply or are ignored.
2025-11-05
GitHub announced that the Copilot coding agent — its asynchronous, autonomous background agent — now supports organization-level custom instructions to guide how Copilot understands and works with projects.
2025-09-03
GitHub announced that Copilot code review now supports path-scoped custom instruction files, letting repositories provide targeted review guidance for specific directories or files using existing instruction files.
2025-08-28
GitHub Copilot coding agent now supports AGENTS.md custom instructions, allowing users to guide the agent on project understanding and how to build, test, and validate changes.