A Skill.md for Commenting on Hacker News

Claude users often struggle with repeating instructions for weekly workflows, such as code reviews or research briefs. To solve this, Anthropic launched Agent Skills in October 2025, enabling users to define persistent workflows. On December 18, 2025, the format was published as an open standard at agentskills.io. By mid-2026, these Agent Skills became a primary method for ensuring agents reliably follow specific checklists and formatting rules without requiring constant re-explanation in every new session.