Create or update repository skills and instructions when major learnings are discovered during a session. Use when the user says "learn!", when a significant pattern or pitfall is identified, or when reusable domain knowledge should be captured for future sessions.
When a major repository learning is discovered — a recurring pattern, a non-obvious pitfall, a crucial architectural constraint, or domain knowledge that would save future sessions significant time — capture it as a skill or instruction so it persists across sessions.
Add a learning to an existing instruction when:
.github/instructions/learnings.instructions.mdCreate or update a skill (.github/skills/{name}/SKILL.md or .agents/skills/{name}/SKILL.md) when:
Create or update an instruction (.github/instructions/{name}.instructions.md) when:
applyTo) or globallyReflect on what went wrong or what was discovered:
Before creating new files, search for existing skills and instructions that might be the right home:
# Check existing skills
ls .github/skills/ .agents/skills/ 2>/dev/null
# Check existing instructions
ls .github/instructions/ 2>/dev/null
# Search for related content
grep -r "related-keyword" .github/skills/ .github/instructions/ .agents/skills/
If an appropriate file exists, add the learning to its ## Learnings section (create the section if it doesn't exist). Each learning should be 1-4 sentences.
If the knowledge warrants a standalone skill:
.github/skills/{name}/SKILL.md for project-level skills (committed to repo).agents/skills/{name}/SKILL.md for agent-specific skills---